Modelling heat recovery in a paint booth
Authorship
E.A.G.
Master in Renewable Energies, Climate Change and Sustainable Development
E.A.G.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.18.2025 09:00
02.18.2025 09:00
Summary
In order to analyze heat recovery from the treatment of volatile organic compounds in an oven of an automotive paint shop, a system was modelled consisting of a recuperative thermal oxidizer with a secondary heat exchanger using the TESPy library in Python. The motivation for this simulation was presented through a literature review focused on energy consumption and emissions in the vehicle assembly process, with an emphasis on paint shops. The simulation results, within certain limitations, were as expected, serving as a preliminary test of the feasibility of implementing a system like the one studied in real-life applications.
In order to analyze heat recovery from the treatment of volatile organic compounds in an oven of an automotive paint shop, a system was modelled consisting of a recuperative thermal oxidizer with a secondary heat exchanger using the TESPy library in Python. The motivation for this simulation was presented through a literature review focused on energy consumption and emissions in the vehicle assembly process, with an emphasis on paint shops. The simulation results, within certain limitations, were as expected, serving as a preliminary test of the feasibility of implementing a system like the one studied in real-life applications.
Direction
BELLO BUGALLO, PASTORA MARIA (Tutorships)
Rodríguez Fernández-Arroyo, Eduardo (Co-tutorships)
BELLO BUGALLO, PASTORA MARIA (Tutorships)
Rodríguez Fernández-Arroyo, Eduardo (Co-tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Computational study of hybrid water-in-salt electrolytes at the electrochemical interface (Specialization in Condensed Matter Physics)
Authorship
D.A.F.
Master in Physics
D.A.F.
Master in Physics
Defense date
07.17.2025 10:30
07.17.2025 10:30
Summary
In the present Master's Thesis, molecular dynamics simulations of hybrid water-in-salt (WiS) electrolytes will be carried out, obtained through the incorporation of different concentrations of an organic co-solvent (acetonitrile). The studied systems: LiTFSI+H2O at 21 m; NaTFSI+H2O at 8 m; and NaOTF+H2O at 9 m, correspond to their respective solubility limits in water, and exhibit strong potential for electrochemical applications. In particular, the effect of replacing the lithium cation with sodium and the TFSI anion with OTF, as well as the impact of co-solvent addition, will be analyzed in terms of the structuring and organization of the electrode-electrolyte interface. Specifically, capacitance values, density profiles, and the orientations of the various species present in the system will be investigated.
In the present Master's Thesis, molecular dynamics simulations of hybrid water-in-salt (WiS) electrolytes will be carried out, obtained through the incorporation of different concentrations of an organic co-solvent (acetonitrile). The studied systems: LiTFSI+H2O at 21 m; NaTFSI+H2O at 8 m; and NaOTF+H2O at 9 m, correspond to their respective solubility limits in water, and exhibit strong potential for electrochemical applications. In particular, the effect of replacing the lithium cation with sodium and the TFSI anion with OTF, as well as the impact of co-solvent addition, will be analyzed in terms of the structuring and organization of the electrode-electrolyte interface. Specifically, capacitance values, density profiles, and the orientations of the various species present in the system will be investigated.
Direction
MENDEZ MORALES, TRINIDAD (Tutorships)
LOMBA GARCÍA, ENRIQUE (Co-tutorships)
MENDEZ MORALES, TRINIDAD (Tutorships)
LOMBA GARCÍA, ENRIQUE (Co-tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
Analysis and dynamic simulation of energy performance in buildings: Application to a selection of sustainable insulation for optimizing energy efficiency
Authorship
K.A.
Master in Renewable Energies, Climate Change and Sustainable Development
K.A.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
09.15.2025 10:00
09.15.2025 10:00
Summary
Accelerated urbanization in recent decades has led to high energy consumption in the building sector, with a negative impact on the environment and human health. To address these challenges, this project aims to reduce the energy consumption of buildings while improving thermal comfort through the use of sustainable insulation. The methodology adopted is based on dynamic thermal simulations of a building located in a specific climatic zone. An initial simulation is carried out without thermal insulation to represent a conventional building. Next, several scenarios are simulated using different thermal insulation materials based on sustainable materials, chosen according to their performance and local availability. The performance of each material is evaluated in terms of thermal comfort in summer and winter, as well as thermal power saved compared to the uninsulated building. An economic analysis is also integrated to assess the feasibility of the materials studied. The expected results will allow for a comparison of the thermal and economic efficiency of each insulation, highlighting the materials most suited to local conditions. This project will thus contribute to offering sustainable, accessible and efficient construction solutions, reducing both environmental impact and energy needs.
Accelerated urbanization in recent decades has led to high energy consumption in the building sector, with a negative impact on the environment and human health. To address these challenges, this project aims to reduce the energy consumption of buildings while improving thermal comfort through the use of sustainable insulation. The methodology adopted is based on dynamic thermal simulations of a building located in a specific climatic zone. An initial simulation is carried out without thermal insulation to represent a conventional building. Next, several scenarios are simulated using different thermal insulation materials based on sustainable materials, chosen according to their performance and local availability. The performance of each material is evaluated in terms of thermal comfort in summer and winter, as well as thermal power saved compared to the uninsulated building. An economic analysis is also integrated to assess the feasibility of the materials studied. The expected results will allow for a comparison of the thermal and economic efficiency of each insulation, highlighting the materials most suited to local conditions. This project will thus contribute to offering sustainable, accessible and efficient construction solutions, reducing both environmental impact and energy needs.
Direction
BELLO BUGALLO, PASTORA MARIA (Tutorships)
BELLO BUGALLO, PASTORA MARIA (Tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Analysis and characterization of wind resources in different regions based on ERA5 data and CMIP6 models
Authorship
K.M.B.J.
Master in Renewable Energies, Climate Change and Sustainable Development
K.M.B.J.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
07.16.2025 09:30
07.16.2025 09:30
Summary
This study analyzes wind resource development in different regions to assess their changing outlook and energy implications. Wind speed data from two sources were downloaded. On the one hand, ERA5 data from recent decades (1985-2024) were used, which combine global meteorological observations with model-based information. On the other hand, results from two CMIP6 climate models (CESM2 and EC-Earth3-Veg-LR) were used, simulating both historical data (1985-2014) and future predictions (2070-2099), considering slight (SSP1-2.6) and extreme (SSP5-8.5) climate change scenarios. Several parameters were then calculated, such as average speeds and relative frequencies for different speed ranges. Furthermore, using the power curves of two wind turbines with standard characteristics, the annual energy that could be generated both onshore and offshore was obtained. Finally, wind speed and energy production were represented on various maps at three different geographic scales: global, national, and regional. The results of CESM2 indicate that wind resource will increase in both Spain and Galicia, with this variation being more significant in a slight climate change scenario. The EC-Earth3-Veg-LR results show similar trends, although with much more moderate variations, even negative in some cases.
This study analyzes wind resource development in different regions to assess their changing outlook and energy implications. Wind speed data from two sources were downloaded. On the one hand, ERA5 data from recent decades (1985-2024) were used, which combine global meteorological observations with model-based information. On the other hand, results from two CMIP6 climate models (CESM2 and EC-Earth3-Veg-LR) were used, simulating both historical data (1985-2014) and future predictions (2070-2099), considering slight (SSP1-2.6) and extreme (SSP5-8.5) climate change scenarios. Several parameters were then calculated, such as average speeds and relative frequencies for different speed ranges. Furthermore, using the power curves of two wind turbines with standard characteristics, the annual energy that could be generated both onshore and offshore was obtained. Finally, wind speed and energy production were represented on various maps at three different geographic scales: global, national, and regional. The results of CESM2 indicate that wind resource will increase in both Spain and Galicia, with this variation being more significant in a slight climate change scenario. The EC-Earth3-Veg-LR results show similar trends, although with much more moderate variations, even negative in some cases.
Direction
MIGUEZ MACHO, GONZALO (Tutorships)
MIGUEZ MACHO, GONZALO (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Computational study of the transport of mixtures of ionic liquids and molecular cosolvents at the electrochemical interface (Specialty in Matter Physics)
Authorship
M.A.B.F.
Master in Physics
M.A.B.F.
Master in Physics
Defense date
07.17.2025 10:30
07.17.2025 10:30
Summary
In the present master's thesis, a systematic study of the effect of chain length on mixtures of ionic liquids with alcohol-based molecular cosolvents is conducted. Specifically, the study will focus on systems consisting of liquids from the alkylammonium family in the presence of propanol. These mixtures exhibit anomalous conductivity, which will be analyzed in depth using polarizable interatomic potentials. These calculations will be performed both in the bulk phase and in the vicinity of an electrochemical interface.
In the present master's thesis, a systematic study of the effect of chain length on mixtures of ionic liquids with alcohol-based molecular cosolvents is conducted. Specifically, the study will focus on systems consisting of liquids from the alkylammonium family in the presence of propanol. These mixtures exhibit anomalous conductivity, which will be analyzed in depth using polarizable interatomic potentials. These calculations will be performed both in the bulk phase and in the vicinity of an electrochemical interface.
Direction
MENDEZ MORALES, TRINIDAD (Tutorships)
Montes Campos, Hadrián (Co-tutorships)
MENDEZ MORALES, TRINIDAD (Tutorships)
Montes Campos, Hadrián (Co-tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
Termophysical and tribological properties of used cooking oils (Specialization in Matter Physics).
Authorship
A.B.T.
Master in Physics
A.B.T.
Master in Physics
Defense date
09.16.2025 17:00
09.16.2025 17:00
Summary
This work aims to evaluate the thermophysical and tribological properties of cooking oils as a sustainable alternative to conventional mineral lubricants, within the context of the circular economy. Six samples of cooking oils were analyzed and characterized using Raman spectroscopy and thermogravimetric analysis (TGA). The thermophysical properties (density, viscosity, viscosity index, isobaric expansivity, and isothermal compressibility) were determined experimentally at atmospheric pressure using a rotational viscometer and up to 80 MPa using a pVT apparatus. Python software was developed to automate the acquisition and correlation of volumetric data. Additionally, the tribological behavior was characterized through friction tests (COF) using a tribometer in a ball-on-three-pins configuration. The wear parameters (diameter, depth, area, and roughness) were quantified using topographical profiles obtained with a 3D optical profiler. Nutrigras 2 oil stood out for its high viscosity index and low coefficient of friction and wear. The application of this oil as a base fluid in the formulation of sustainable lubricants was evaluated by blending it with four biodegradable esters in an 80/20 ratio. The best tribological properties were observed for the TiDTM + Nutrigras 2 combination, achieving reductions of 39 % and 21 % for the coefficient of friction and the wear scar area, respectively.
This work aims to evaluate the thermophysical and tribological properties of cooking oils as a sustainable alternative to conventional mineral lubricants, within the context of the circular economy. Six samples of cooking oils were analyzed and characterized using Raman spectroscopy and thermogravimetric analysis (TGA). The thermophysical properties (density, viscosity, viscosity index, isobaric expansivity, and isothermal compressibility) were determined experimentally at atmospheric pressure using a rotational viscometer and up to 80 MPa using a pVT apparatus. Python software was developed to automate the acquisition and correlation of volumetric data. Additionally, the tribological behavior was characterized through friction tests (COF) using a tribometer in a ball-on-three-pins configuration. The wear parameters (diameter, depth, area, and roughness) were quantified using topographical profiles obtained with a 3D optical profiler. Nutrigras 2 oil stood out for its high viscosity index and low coefficient of friction and wear. The application of this oil as a base fluid in the formulation of sustainable lubricants was evaluated by blending it with four biodegradable esters in an 80/20 ratio. The best tribological properties were observed for the TiDTM + Nutrigras 2 combination, achieving reductions of 39 % and 21 % for the coefficient of friction and the wear scar area, respectively.
Direction
PEREZ COMUÑAS, MARIA JOSE (Tutorships)
GARCIA GUIMAREY, MARIA JESUS (Co-tutorships)
PEREZ COMUÑAS, MARIA JOSE (Tutorships)
GARCIA GUIMAREY, MARIA JESUS (Co-tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
Optimizing the quantum code compilation process using the Qat tool
Authorship
D.C.C.
Master's Degree in Quantum Information Science and Technology
D.C.C.
Master's Degree in Quantum Information Science and Technology
Defense date
07.01.2025 10:30
07.01.2025 10:30
Summary
Today, the hype surrounding quantum computing and the development of new associated technologies has led us to focus on a vitally important element: the compiler. This element plays a fundamental role in enabling the use of languages that make these new technologies easier for users. In this context and from two problems found in real environments such as QMIO, a quantum computer located in the instalations of CESGA, this work is developed, analyzing and studying a quantum compilation application. Qat case is shown, a quantum compiler open source avaliable in the public respository of Oxford Quantum Circuits, originally written in Python, identifying the principal bottlenecks through tools of profiling and execution analysis. From these results, critical components were selected to be reimplemented in a low-level language could significantly reduce the processing times and improve the overall efficiency of the system. This job analyzes how the combination of deep analysis and low-level techniques can extend the useful life and efficiency of new software tools for quantum systems already developed.
Today, the hype surrounding quantum computing and the development of new associated technologies has led us to focus on a vitally important element: the compiler. This element plays a fundamental role in enabling the use of languages that make these new technologies easier for users. In this context and from two problems found in real environments such as QMIO, a quantum computer located in the instalations of CESGA, this work is developed, analyzing and studying a quantum compilation application. Qat case is shown, a quantum compiler open source avaliable in the public respository of Oxford Quantum Circuits, originally written in Python, identifying the principal bottlenecks through tools of profiling and execution analysis. From these results, critical components were selected to be reimplemented in a low-level language could significantly reduce the processing times and improve the overall efficiency of the system. This job analyzes how the combination of deep analysis and low-level techniques can extend the useful life and efficiency of new software tools for quantum systems already developed.
Direction
PIÑEIRO POMAR, CESAR ALFREDO (Tutorships)
Vázquez Pérez, Jorge (Co-tutorships)
PIÑEIRO POMAR, CESAR ALFREDO (Tutorships)
Vázquez Pérez, Jorge (Co-tutorships)
Court
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
Formulation and tribological characterization of transmission nanofluids for electric vehicles
Authorship
M.C.I.
Master in Renewable Energies, Climate Change and Sustainable Development
M.C.I.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
The boom in electric vehicles is associated with a boost in research and demand for new specific lubricants in order to improve its efficiency and extend its service life. Improving the properties of base lubricants by adding additives is a common practice, and nanoparticles are being touted as a promising option for this purpose due to their unique tribological qualities. The focus of this work is on formulating, characterization, and studying the tribological performance of nanolubricants based on two synthetic esters, applying nanoadditives of molybdenum trioxide (MoO_3) in different concentrations. Tribological tests were performed with two types of configurations and boundary conditions: ball on disk at ambient temperature and with a load of 20 N; and ball on three pins at 120 C and load 9.43 N per pin. Compared to base esters, there is a significant reduction in friction and wear, with a maximum decrease in friction coefficient of 21% in the nanodispersion based on Priolube 1976 ester with 0.05 wt% of MoO_3. at room temperature, the wear reduction is the highest, of 45%,for nanolubricant based on Priolube 1973 ester with 0.1 wt% of MoO_3 at 120 C. In addition, Raman mapping and roughness assessment suggest possible tribofilm formation and polishing effect as lubrication mechanisms.
The boom in electric vehicles is associated with a boost in research and demand for new specific lubricants in order to improve its efficiency and extend its service life. Improving the properties of base lubricants by adding additives is a common practice, and nanoparticles are being touted as a promising option for this purpose due to their unique tribological qualities. The focus of this work is on formulating, characterization, and studying the tribological performance of nanolubricants based on two synthetic esters, applying nanoadditives of molybdenum trioxide (MoO_3) in different concentrations. Tribological tests were performed with two types of configurations and boundary conditions: ball on disk at ambient temperature and with a load of 20 N; and ball on three pins at 120 C and load 9.43 N per pin. Compared to base esters, there is a significant reduction in friction and wear, with a maximum decrease in friction coefficient of 21% in the nanodispersion based on Priolube 1976 ester with 0.05 wt% of MoO_3. at room temperature, the wear reduction is the highest, of 45%,for nanolubricant based on Priolube 1973 ester with 0.1 wt% of MoO_3 at 120 C. In addition, Raman mapping and roughness assessment suggest possible tribofilm formation and polishing effect as lubrication mechanisms.
Direction
GARCIA GUIMAREY, MARIA JESUS (Tutorships)
Liñeira del Río, José Manuel (Co-tutorships)
GARCIA GUIMAREY, MARIA JESUS (Tutorships)
Liñeira del Río, José Manuel (Co-tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Design of a photovoltaic carport for charging electric vehicles on Campus Vida at the University of Santiago de Compostela
Authorship
C.C.L.
Master in Renewable Energies, Climate Change and Sustainable Development
C.C.L.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.03.2025 10:00
02.03.2025 10:00
Summary
The aim of this project is the design and sizing of a photovoltaic carport for charging electric vehicles in a parking lot at the University of Santiago de Compostela. This proposal provides an efficient and sustainable solution by taking advantage of underused spaces, such as parking lots, and transforming them into renewable energy generation points. Moreover, it seeks to foster sustainable mobility on campus by encouraging the adoption of electric vehicles through the expansion of charging infrastructure, addressing one of the main barriers to their implementation.
The aim of this project is the design and sizing of a photovoltaic carport for charging electric vehicles in a parking lot at the University of Santiago de Compostela. This proposal provides an efficient and sustainable solution by taking advantage of underused spaces, such as parking lots, and transforming them into renewable energy generation points. Moreover, it seeks to foster sustainable mobility on campus by encouraging the adoption of electric vehicles through the expansion of charging infrastructure, addressing one of the main barriers to their implementation.
Direction
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Implementation of the ISCC Sustainability Management System in a Biogas Plant and Greenhouse Gas (GHG) Calculation
Authorship
P.D.D.
Master in Renewable Energies, Climate Change and Sustainable Development
P.D.D.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.18.2025 09:00
02.18.2025 09:00
Summary
This Master's Thesis aims to develop a detailed manual for implementing a sustainability system in a biogas plant, based on the criteria of the international ISCC (International Sustainability and Carbon Certification) and in compliance with the current European Union regulations, specifically Directive (EU) 2018/2001 of the European Parliament and the Council, also known as RED II [1], recognizing the future entry into force of Directive (EU) 2023/2413 or RED III [3], approved in October 2023. Throughout the study, the applicable sustainability requirements are identified and analyzed, considering the necessary procedures to meet ISCC certification requirements within the European context. The methodology employed is based on a review of the sustainability criteria defined by European regulations and their implementation in biogas plants. The thesis develops a detailed manual serving as a guide to implementing a sustainability system, specifying the required documentation and records, as well as analyzing internal audit and certification processes. Additionally, the procedure for calculating greenhouse gas (GHG) emissions is examined, aligned with European regulations, and applied to a biogas plant model, providing a practical example. The conclusions highlight the benefits of implementing a robust sustainability system in biogas plants and its positive impact on meeting the European Union's climate and energy objectives.
This Master's Thesis aims to develop a detailed manual for implementing a sustainability system in a biogas plant, based on the criteria of the international ISCC (International Sustainability and Carbon Certification) and in compliance with the current European Union regulations, specifically Directive (EU) 2018/2001 of the European Parliament and the Council, also known as RED II [1], recognizing the future entry into force of Directive (EU) 2023/2413 or RED III [3], approved in October 2023. Throughout the study, the applicable sustainability requirements are identified and analyzed, considering the necessary procedures to meet ISCC certification requirements within the European context. The methodology employed is based on a review of the sustainability criteria defined by European regulations and their implementation in biogas plants. The thesis develops a detailed manual serving as a guide to implementing a sustainability system, specifying the required documentation and records, as well as analyzing internal audit and certification processes. Additionally, the procedure for calculating greenhouse gas (GHG) emissions is examined, aligned with European regulations, and applied to a biogas plant model, providing a practical example. The conclusions highlight the benefits of implementing a robust sustainability system in biogas plants and its positive impact on meeting the European Union's climate and energy objectives.
Direction
PROUPIN CASTIÑEIRAS, JORGE (Tutorships)
PROUPIN CASTIÑEIRAS, JORGE (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Sustainable Electrification of a University Parking Lot through Photovoltaic Solar Energy and Battery Storage
Authorship
E.E.F.P.
Master in Renewable Energies, Climate Change and Sustainable Development
E.E.F.P.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
09.15.2025 10:00
09.15.2025 10:00
Summary
This project focuses on the electrification of the parking area of the Faculty of Physics at the University of Santiago de Compostela through the implementation of an off-grid photovoltaic system. The system enables the recharging of one hundred percent electric and plug-in hybrid vehicles officially operated by the university during their inactive periods. To minimize costs and ensure energy autonomy, slow-charging stations and a battery storage system have been selected. The proposed design has proven to be technically, environmentally, and economically viable. From a technical standpoint, the installation benefits from the optimal orientation of the building's roof, maximizing annual photovoltaic generation without requiring structural modifications. Environmentally, the exclusive use of renewable energy significantly reduces greenhouse gas emissions and minimizes the ecological footprint. Economically, although the initial investment is substantial, the financial analysis indicates a payback period of 14 years. Considering an estimated system lifespan of 25 years, the project is economically profitable in the long term. Positive values of Net Present Value and Internal Rate of Return confirm its economic feasibility. This study highlights the potential of current photovoltaic self-consumption and electric vehicle charging technologies as effective tools for promoting sustainability, reducing carbon dioxide emissions, and advancing energy independence.
This project focuses on the electrification of the parking area of the Faculty of Physics at the University of Santiago de Compostela through the implementation of an off-grid photovoltaic system. The system enables the recharging of one hundred percent electric and plug-in hybrid vehicles officially operated by the university during their inactive periods. To minimize costs and ensure energy autonomy, slow-charging stations and a battery storage system have been selected. The proposed design has proven to be technically, environmentally, and economically viable. From a technical standpoint, the installation benefits from the optimal orientation of the building's roof, maximizing annual photovoltaic generation without requiring structural modifications. Environmentally, the exclusive use of renewable energy significantly reduces greenhouse gas emissions and minimizes the ecological footprint. Economically, although the initial investment is substantial, the financial analysis indicates a payback period of 14 years. Considering an estimated system lifespan of 25 years, the project is economically profitable in the long term. Positive values of Net Present Value and Internal Rate of Return confirm its economic feasibility. This study highlights the potential of current photovoltaic self-consumption and electric vehicle charging technologies as effective tools for promoting sustainability, reducing carbon dioxide emissions, and advancing energy independence.
Direction
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Obtaining molecular spectra by means of variational quantum circuits
Authorship
C.F.L.
Master's Degree in Quantum Information Science and Technology
C.F.L.
Master's Degree in Quantum Information Science and Technology
Defense date
07.01.2025 10:30
07.01.2025 10:30
Summary
In the current era of quantum computing, quantum variational algorithms are among the most studied and used resources. Thus, the aim of this work is to use them to obtain molecular spectra. For this, we will start from the Hamiltonian Forging of a Thermofield Double state method to present an alternative version based on the use of free energy. We will explain why this magnitude is used, as well as the functioning of the entire variational algorithm. We will then compare the two methods for model molecules, both by performing the calculations algebraically and by emulating the circuits. We will also apply the energy truncation technique to reduce the computational cost of the variational algorithm. Finally, we will show how well the method works using the free energy for two real molecules: ethyl bromide and 1,2-dichloropropane.
In the current era of quantum computing, quantum variational algorithms are among the most studied and used resources. Thus, the aim of this work is to use them to obtain molecular spectra. For this, we will start from the Hamiltonian Forging of a Thermofield Double state method to present an alternative version based on the use of free energy. We will explain why this magnitude is used, as well as the functioning of the entire variational algorithm. We will then compare the two methods for model molecules, both by performing the calculations algebraically and by emulating the circuits. We will also apply the energy truncation technique to reduce the computational cost of the variational algorithm. Finally, we will show how well the method works using the free energy for two real molecules: ethyl bromide and 1,2-dichloropropane.
Direction
MAS SOLE, JAVIER (Tutorships)
FAILDE BALEA, DANIEL (Co-tutorships)
MAS SOLE, JAVIER (Tutorships)
FAILDE BALEA, DANIEL (Co-tutorships)
Court
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
Sexaquark production analysis with the LHCb experiments (Nuclear and Particle Physics)
Authorship
B.F.R.
Master in Physics
B.F.R.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
Sexaquarks (uuddss) are hypothetical bound states of six quarks. Their stability and low interaction rate make them a promising candidate for dark matter (DM). The LHCb detector at CERN provides a potential avenue for their discovery, as large quantities of heavy baryons are produced there, which could decay into sexaquarks. Furthermore, the current data-taking period at the LHC (Run 3) represents a major opportunity for discovering such decays due to improvements in the trigger system. The aim of this work is to identify the most feasible decays for sexaquark production at LHCb in order to develop trigger lines for collecting data on these decays during Run 3 of the LHC.
Sexaquarks (uuddss) are hypothetical bound states of six quarks. Their stability and low interaction rate make them a promising candidate for dark matter (DM). The LHCb detector at CERN provides a potential avenue for their discovery, as large quantities of heavy baryons are produced there, which could decay into sexaquarks. Furthermore, the current data-taking period at the LHC (Run 3) represents a major opportunity for discovering such decays due to improvements in the trigger system. The aim of this work is to identify the most feasible decays for sexaquark production at LHCb in order to develop trigger lines for collecting data on these decays during Run 3 of the LHC.
Direction
VIEITES DIAZ, MARIA (Tutorships)
CID VIDAL, XABIER (Co-tutorships)
VIEITES DIAZ, MARIA (Tutorships)
CID VIDAL, XABIER (Co-tutorships)
Court
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
Measuring correlated errors in Qmio’s superconducting qubits (Specialisation in Nuclear and Particle Physics)
Authorship
C.F.R.
Master in Physics
C.F.R.
Master in Physics
Defense date
09.16.2025 16:00
09.16.2025 16:00
Summary
Correlated errors are especially malign for quantum computer devices, since they do not fall within the scope of current tools for dealing with quantum errors. Here, a study of these errors is presented. Measurements were performed to characterise these errors for six of the superconducting qubits of the Qmio quantum computer at CESGA, observing an exponential behaviour with a decay in the order of milliseconds. A theoretical description of the Hamiltonians describing superconducting qubits within the scope of circuit quantum electrodynamics is also presented to deepen the understanding of these devices. Some notes about noise in the context of quantum computing are also presented. A detector to measure cosmic rays, our expected principal candidate to generate these errors, is also studied. The design of the detector consists in two layers of scintillating bars. By measuring an impact in both layers, the track of the cosmic ray can be obtained and we can reconstruct an impact point at the level where the qubits are located. A simulation with Geant4 was done to perform a detailed analysis of the uncertainty on the reconstructed point, obtaining that a resolution within the centimeter scale can be achieved, confirming the validity of such detector.
Correlated errors are especially malign for quantum computer devices, since they do not fall within the scope of current tools for dealing with quantum errors. Here, a study of these errors is presented. Measurements were performed to characterise these errors for six of the superconducting qubits of the Qmio quantum computer at CESGA, observing an exponential behaviour with a decay in the order of milliseconds. A theoretical description of the Hamiltonians describing superconducting qubits within the scope of circuit quantum electrodynamics is also presented to deepen the understanding of these devices. Some notes about noise in the context of quantum computing are also presented. A detector to measure cosmic rays, our expected principal candidate to generate these errors, is also studied. The design of the detector consists in two layers of scintillating bars. By measuring an impact in both layers, the track of the cosmic ray can be obtained and we can reconstruct an impact point at the level where the qubits are located. A simulation with Geant4 was done to perform a detailed analysis of the uncertainty on the reconstructed point, obtaining that a resolution within the centimeter scale can be achieved, confirming the validity of such detector.
Direction
ALVAREZ POL, HECTOR (Tutorships)
ALVAREZ POL, HECTOR (Tutorships)
Court
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
Photovoltaic power generation plants in educational institution buildings
Authorship
I.G.C.
Master in Renewable Energies, Climate Change and Sustainable Development
I.G.C.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.18.2025 09:00
02.18.2025 09:00
Summary
As of 2023, primary energy demand remains largely dominated by fossil fuels, which account for 80 of the global energy mix. This energy model, combined with the continuous growth in demand, has led to an increase in greenhouse gas emissions, particularly CO2, contributing to global warming. In response to this situation, the world's leading political and economic blocs have promoted policies to reduce emissions and accelerate the energy transition toward renewable sources. In this context, Spain has strongly committed to the development of photovoltaic solar energy. This study evaluates the feasibility of installing a photovoltaic solar power plant at the Instituto de Educación Secundaria y Bachillerato O Barral, located in the municipality of Ponteareas. The photovoltaic system will be installed on two rooftops of the building, one with an 8 degrees west 4 orientation and the other with an 82 degrees east orientation, with a total available surface area exceeding 550 m2. The project includes the installation of 96 photovoltaic modules of 600 Wp each and an inverter with a nominal power of 50 kW. Considering the electrical characteristics of the system and the climatic conditions of the location, the installation is expected to generate 74.43 MWh/year, with a specific production of 1,292 kWh/kWp year. Over its lifetime, the project will prevent approximately 455.4 tons of CO2 emissions into the atmosphere. Additionally, this installation is proposed to be complemented by a comprehensive educational plan aimed at the school community, addressing topics such as climate change, energy transition, photovoltaic solar energy, and its application in Galicia.
As of 2023, primary energy demand remains largely dominated by fossil fuels, which account for 80 of the global energy mix. This energy model, combined with the continuous growth in demand, has led to an increase in greenhouse gas emissions, particularly CO2, contributing to global warming. In response to this situation, the world's leading political and economic blocs have promoted policies to reduce emissions and accelerate the energy transition toward renewable sources. In this context, Spain has strongly committed to the development of photovoltaic solar energy. This study evaluates the feasibility of installing a photovoltaic solar power plant at the Instituto de Educación Secundaria y Bachillerato O Barral, located in the municipality of Ponteareas. The photovoltaic system will be installed on two rooftops of the building, one with an 8 degrees west 4 orientation and the other with an 82 degrees east orientation, with a total available surface area exceeding 550 m2. The project includes the installation of 96 photovoltaic modules of 600 Wp each and an inverter with a nominal power of 50 kW. Considering the electrical characteristics of the system and the climatic conditions of the location, the installation is expected to generate 74.43 MWh/year, with a specific production of 1,292 kWh/kWp year. Over its lifetime, the project will prevent approximately 455.4 tons of CO2 emissions into the atmosphere. Additionally, this installation is proposed to be complemented by a comprehensive educational plan aimed at the school community, addressing topics such as climate change, energy transition, photovoltaic solar energy, and its application in Galicia.
Direction
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Losada Pérez, Andrés (Co-tutorships)
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Losada Pérez, Andrés (Co-tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Master Dissertation: Technical-economic analysis of the replacement of a gas boiler with a heat pump in Aludec Galvanic 2.
Authorship
M.E.H.V.
Master in Renewable Energies, Climate Change and Sustainable Development
M.E.H.V.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.18.2025 09:00
02.18.2025 09:00
Summary
Climate change is one of the greatest challenges of our time, driving industries to adopt more sustainable solutions that reduce their environmental impact. In this context, this study is based on the need to decarbonize the thermal processes of the Aludec Galvanic 2 plant, located in Pontevedra, where heat is an essential resource for chrome plating parts. The plant currently uses a gas boiler with an annual consumption of more than 2,500 MWh, generating approximately 545 tons of CO2 annually. The main objective of this project is to assess the technical and economic feasibility of replacing this boiler with a high-efficiency heat pump, analysing how this solution can significantly reduce carbon emissions, optimize operating costs and contribute to global decarbonization objectives. Through a technical-economic analysis, it seeks not only to quantify the energy and economic savings but also to demonstrate how this transition can be suitable in other industries with similar thermal demands. Ultimately, this project aims to demonstrate that electrifying thermal processes is not only a technically and economically viable solution but also a key strategy for reducing the carbon footprint and moving towards more sustainable production models.
Climate change is one of the greatest challenges of our time, driving industries to adopt more sustainable solutions that reduce their environmental impact. In this context, this study is based on the need to decarbonize the thermal processes of the Aludec Galvanic 2 plant, located in Pontevedra, where heat is an essential resource for chrome plating parts. The plant currently uses a gas boiler with an annual consumption of more than 2,500 MWh, generating approximately 545 tons of CO2 annually. The main objective of this project is to assess the technical and economic feasibility of replacing this boiler with a high-efficiency heat pump, analysing how this solution can significantly reduce carbon emissions, optimize operating costs and contribute to global decarbonization objectives. Through a technical-economic analysis, it seeks not only to quantify the energy and economic savings but also to demonstrate how this transition can be suitable in other industries with similar thermal demands. Ultimately, this project aims to demonstrate that electrifying thermal processes is not only a technically and economically viable solution but also a key strategy for reducing the carbon footprint and moving towards more sustainable production models.
Direction
SALGADO CARBALLO, JOSEFA (Tutorships)
Casas Lopez, María Trinidad (Co-tutorships)
SALGADO CARBALLO, JOSEFA (Tutorships)
Casas Lopez, María Trinidad (Co-tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Study of the feasibility of implementing sustainable tourism on the island of San Andrés (Colombia)
Authorship
V.H.G.
Master in Renewable Energies, Climate Change and Sustainable Development
V.H.G.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
07.16.2025 09:30
07.16.2025 09:30
Summary
The island of San Andres faces multiple challenges derived from traditional tourism, such as mitigating environmental deterioration, pressure on natural resources, social inequality and economic dependence on the tourism sector. This study evaluates the feasibility of implementing a sustainable tourism model that integrates economic development with environmental preservation and community well-being. This study has a qualitative methodology that combines literature review, database analysis and stakeholder surveys. The main environmental, social, economic and energy needs of the island were identified, the impact of conventional tourism was analyzed and existing sustainable initiatives were documented. The survey results show a critical perception of the environmental state of the island, concern about climate change, and a willingness on the part of local stakeholders to collaborate in tourism transformation processes. This study proposes strategies focused on energy transition, integrated waste management, regulation of tourist load and strengthening community and cultural participation.
The island of San Andres faces multiple challenges derived from traditional tourism, such as mitigating environmental deterioration, pressure on natural resources, social inequality and economic dependence on the tourism sector. This study evaluates the feasibility of implementing a sustainable tourism model that integrates economic development with environmental preservation and community well-being. This study has a qualitative methodology that combines literature review, database analysis and stakeholder surveys. The main environmental, social, economic and energy needs of the island were identified, the impact of conventional tourism was analyzed and existing sustainable initiatives were documented. The survey results show a critical perception of the environmental state of the island, concern about climate change, and a willingness on the part of local stakeholders to collaborate in tourism transformation processes. This study proposes strategies focused on energy transition, integrated waste management, regulation of tourist load and strengthening community and cultural participation.
Direction
RODRIGUEZ AÑON, JOSE ANTONIO (Tutorships)
RODRIGUEZ AÑON, JOSE ANTONIO (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Analysis of the environmental dimension in the development of four wind farms in the province of Zamora
Authorship
A.L.P.
Master in Renewable Energies, Climate Change and Sustainable Development
A.L.P.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
This work focuses on evaluaRng the environmental dimension of four wind farms located in the province of Zamora. For this purpose, a comprehensive analysis based on several methodologies has been carried out. First, the Environmental Impact Statements of nearby projects have been examined in order to identify background and possible environmental constraints. Subsequently, an analysis of the specific environmental constraints of the parks under study has been carried out, taking into account regulatory and ecological factors. In addition, Initial Environmental Documents have been elaborated to identify potential environmental impacts associated with each project. As a part of the process, pre-operational surveys have also been carried out to evaluate the environmental viability of the parks in future stages. The results obtained indicate that the four projects can continue without significant modificaRons in the current phase, ensuring at all times the respect and protection of the natural and cultural environment.
This work focuses on evaluaRng the environmental dimension of four wind farms located in the province of Zamora. For this purpose, a comprehensive analysis based on several methodologies has been carried out. First, the Environmental Impact Statements of nearby projects have been examined in order to identify background and possible environmental constraints. Subsequently, an analysis of the specific environmental constraints of the parks under study has been carried out, taking into account regulatory and ecological factors. In addition, Initial Environmental Documents have been elaborated to identify potential environmental impacts associated with each project. As a part of the process, pre-operational surveys have also been carried out to evaluate the environmental viability of the parks in future stages. The results obtained indicate that the four projects can continue without significant modificaRons in the current phase, ensuring at all times the respect and protection of the natural and cultural environment.
Direction
GOMEZ DIAZ, DIEGO (Tutorships)
Ureña Pérez, Marta (Co-tutorships)
GOMEZ DIAZ, DIEGO (Tutorships)
Ureña Pérez, Marta (Co-tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Design of a light-emitting system using Zemax optical design software (Specialization in Physics of light and radiation).
Authorship
D.L.F.
Master in Physics
D.L.F.
Master in Physics
Defense date
07.16.2025 10:00
07.16.2025 10:00
Summary
The goal of the Master's thesis is to design a light-emitting system based on LED or a fiber laser's beam to power remotely photovoltaic cells, at a distance of between several meters and tens of kilometers, using the optical simulator ANSYS Zemax OpticStudio.
The goal of the Master's thesis is to design a light-emitting system based on LED or a fiber laser's beam to power remotely photovoltaic cells, at a distance of between several meters and tens of kilometers, using the optical simulator ANSYS Zemax OpticStudio.
Direction
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Gómez Varela, Ana Isabel (Co-tutorships)
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Gómez Varela, Ana Isabel (Co-tutorships)
Court
DE LA FUENTE CARBALLO, RAUL (Chairman)
MOURIZ CEREIJO, MARIA DOLORES (Secretary)
LOPEZ LAGO, MARIA ELENA (Member)
DE LA FUENTE CARBALLO, RAUL (Chairman)
MOURIZ CEREIJO, MARIA DOLORES (Secretary)
LOPEZ LAGO, MARIA ELENA (Member)
Micromagnetic study of (nano)superellipsoids and applicability of the macrospin model (Specialty in Physics of Matter.)
Authorship
I.L.V.
Master in Physics
I.L.V.
Master in Physics
Defense date
07.17.2025 10:30
07.17.2025 10:30
Summary
This work presents a theoretical study of the magnetic behavior of Fe3O4 magnetic nanoparticles with a superellipsoidal shape, a family of geometries that allows continuous interpolation between spheres and cubes. Using micromagnetic simulations, we analyze both the magnetic order in the absence of an external field and the response of the nanoparticles to the application of a magnetic field, with the aim of evaluating the validity of the macrospin model to describe them. Following a detailed description of the physical and computational model employed, the study begins with the determination of the range of coherent behavior of the nanoparticles as a function of their size and shape. After identifying this range, the correspondence between the micromagnetic simulations and the macrospin model described as a combination of anisotropies is analyzed through a comparative study of the corresponding hysteresis loops. The results show the capability of this simplified model to describe the behavior of geometrically close shapes regardless of their elongation. The study concludes with an introduction to dynamic simulations at finite temperature and a qualitative analysis of the internal structure of the nanoparticles, specifically focusing on vortex-like configurations.
This work presents a theoretical study of the magnetic behavior of Fe3O4 magnetic nanoparticles with a superellipsoidal shape, a family of geometries that allows continuous interpolation between spheres and cubes. Using micromagnetic simulations, we analyze both the magnetic order in the absence of an external field and the response of the nanoparticles to the application of a magnetic field, with the aim of evaluating the validity of the macrospin model to describe them. Following a detailed description of the physical and computational model employed, the study begins with the determination of the range of coherent behavior of the nanoparticles as a function of their size and shape. After identifying this range, the correspondence between the micromagnetic simulations and the macrospin model described as a combination of anisotropies is analyzed through a comparative study of the corresponding hysteresis loops. The results show the capability of this simplified model to describe the behavior of geometrically close shapes regardless of their elongation. The study concludes with an introduction to dynamic simulations at finite temperature and a qualitative analysis of the internal structure of the nanoparticles, specifically focusing on vortex-like configurations.
Direction
SERANTES ABALO, DAVID (Tutorships)
Iglesias Clotas, Oscar (Co-tutorships)
SERANTES ABALO, DAVID (Tutorships)
Iglesias Clotas, Oscar (Co-tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
Distributed Variational Quantum Eigensolver across different noise profiles
Authorship
M.L.E.
Master's Degree in Quantum Information Science and Technology
M.L.E.
Master's Degree in Quantum Information Science and Technology
Defense date
07.01.2025 10:30
07.01.2025 10:30
Summary
In the current NISQ (Noisy Intermediate-Scale Quantum) era, quantum computing faces significant limitations due to the constrained capabilities of quantum processing units, especially when addressing complex problems. Variational Quantum Algorithms (VQAs) have emerged as one of the most promising strategies to harness quantum advantage with current hardware, relying on parametrized quantum circuits optimized via classical feedback loops. However, these algorithms require multiple circuit executions per optimization step, which becomes time-consuming and resource-intensive, especially considering the limited access to large-scale quantum hardware. Distributed quantum computing offers a compelling alternative by leveraging multiple smaller quantum devices that operate collectively, enabling circuit and workflow parallelization and reduced execution time. It has been shown that VQAs executed on real quantum devices benefit significantly from noise-aware optimization strategies [1]. In this work, the impact of heterogeneous noise on the performance of VQAs is investigated by simulating a distributed quantum computing setup. The aim is to analyse how different types of noise affect the optimization process. For this it is employed CUNQA [2]: a platform designed to emulate distributed quantum computing on HPC infrastructure using configurable virtual QPUs and realistic backend noise models. Several classical optimizers -including COBYLA, Differential Evolution, and Quantum Natural Gradient- are benchmarked in terms of convergence and robustness under heterogeneous noise. The target application is finding the ground state of the transverse field Ising model. With all this, the intention is to explore the viability of distributed quantum algorithms in real hardware. [1] Lavrijsen, W., Tudor, A., Muller, J., Iancu, C. and de Jong, W. Classical Optimizers for Noisy Intermediate-Scale Quantum Devices. In 2020 IEEE International Conference on Quantum Computing and Engineering (QCE), 267-277 (IEEE, 2020). [2] Losada, M., Vázquez, J., Carballido, A. and Expósito, D. CUNQA: A platform to emulate distributed quantum computing on CESGA HPC enviroment.
In the current NISQ (Noisy Intermediate-Scale Quantum) era, quantum computing faces significant limitations due to the constrained capabilities of quantum processing units, especially when addressing complex problems. Variational Quantum Algorithms (VQAs) have emerged as one of the most promising strategies to harness quantum advantage with current hardware, relying on parametrized quantum circuits optimized via classical feedback loops. However, these algorithms require multiple circuit executions per optimization step, which becomes time-consuming and resource-intensive, especially considering the limited access to large-scale quantum hardware. Distributed quantum computing offers a compelling alternative by leveraging multiple smaller quantum devices that operate collectively, enabling circuit and workflow parallelization and reduced execution time. It has been shown that VQAs executed on real quantum devices benefit significantly from noise-aware optimization strategies [1]. In this work, the impact of heterogeneous noise on the performance of VQAs is investigated by simulating a distributed quantum computing setup. The aim is to analyse how different types of noise affect the optimization process. For this it is employed CUNQA [2]: a platform designed to emulate distributed quantum computing on HPC infrastructure using configurable virtual QPUs and realistic backend noise models. Several classical optimizers -including COBYLA, Differential Evolution, and Quantum Natural Gradient- are benchmarked in terms of convergence and robustness under heterogeneous noise. The target application is finding the ground state of the transverse field Ising model. With all this, the intention is to explore the viability of distributed quantum algorithms in real hardware. [1] Lavrijsen, W., Tudor, A., Muller, J., Iancu, C. and de Jong, W. Classical Optimizers for Noisy Intermediate-Scale Quantum Devices. In 2020 IEEE International Conference on Quantum Computing and Engineering (QCE), 267-277 (IEEE, 2020). [2] Losada, M., Vázquez, J., Carballido, A. and Expósito, D. CUNQA: A platform to emulate distributed quantum computing on CESGA HPC enviroment.
Direction
PARDO CASTRO, VICTOR (Tutorships)
FAILDE BALEA, DANIEL (Co-tutorships)
PARDO CASTRO, VICTOR (Tutorships)
FAILDE BALEA, DANIEL (Co-tutorships)
Court
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
Key Strategies in Forest Management to Improve the Fight Against Climate Change and Wildfires in Galicia. A prevention-based approach
Authorship
A.M.F.
Master in Renewable Energies, Climate Change and Sustainable Development
A.M.F.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
07.16.2025 09:30
07.16.2025 09:30
Summary
This project addresses forest management, climate change, and wildfires in Galicia from the perspective of local forest communities in common ownership. This proposal stems from the need to delve deeper into the role that local forest management can play in the face of growing environmental challenges, in a context where land abandonment and the lack of seasonal continuity in rural areas contribute to increased fire risk and ecosystem deterioration. Through a methodological combination based on a literature review, expert interviews, and surveys targeting local forest communities and associations, data were collected to identify the most common practices, perceptions of environmental risks, and the main obstacles that influence their daily management. The level of community participation in public policies and existing support instruments is also analyzed. The results show that many active communities carry out preventive tasks, such as clearing brush or maintaining buffer zones, and show a growing interest in more sustainable, diverse, and territorially-linked management models. It also includes frequent demands for improved inter-administrative coordination, streamlining bureaucratic procedures, and recognition of the work these communities carry out throughout Galicia. This work aims to contribute to the recognition of the efforts of these local entities and reflect on the need to strengthen public and social support as an essential condition for moving toward more effective forest management, capable of reducing expected environmental impacts and generating opportunities for sustainable development in rural areas.
This project addresses forest management, climate change, and wildfires in Galicia from the perspective of local forest communities in common ownership. This proposal stems from the need to delve deeper into the role that local forest management can play in the face of growing environmental challenges, in a context where land abandonment and the lack of seasonal continuity in rural areas contribute to increased fire risk and ecosystem deterioration. Through a methodological combination based on a literature review, expert interviews, and surveys targeting local forest communities and associations, data were collected to identify the most common practices, perceptions of environmental risks, and the main obstacles that influence their daily management. The level of community participation in public policies and existing support instruments is also analyzed. The results show that many active communities carry out preventive tasks, such as clearing brush or maintaining buffer zones, and show a growing interest in more sustainable, diverse, and territorially-linked management models. It also includes frequent demands for improved inter-administrative coordination, streamlining bureaucratic procedures, and recognition of the work these communities carry out throughout Galicia. This work aims to contribute to the recognition of the efforts of these local entities and reflect on the need to strengthen public and social support as an essential condition for moving toward more effective forest management, capable of reducing expected environmental impacts and generating opportunities for sustainable development in rural areas.
Direction
REYES FERREIRA, OTILIA (Tutorships)
Blanco Ballón, Jorge Manuel (Co-tutorships)
Cruz de la Fuente, Óscar (Co-tutorships)
REYES FERREIRA, OTILIA (Tutorships)
Blanco Ballón, Jorge Manuel (Co-tutorships)
Cruz de la Fuente, Óscar (Co-tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Renewable energy sources: battery storage systems for a sustainable future
Authorship
B.O.M.M.
Master in Renewable Energies, Climate Change and Sustainable Development
B.O.M.M.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.18.2025 09:00
02.18.2025 09:00
Summary
This work addresses the importance of battery storage systems in integrating renewable energy sources during the transition toward a sustainable energy model and future. Renewable energy sources, such as solar and wind, are essential for reducing greenhouse gas emissions. However, their intermittent nature limits their effectiveness without efficient storage technologies that enable surplus energy management and stabilize power grids. This study examines various battery technologies, including lithium-ion, sodium-sulfur, flow, and metal-air batteries, highlighting recent advancements in capacity, efficiency, and sustainability. It also discusses the technical, economic, and environmental challenges, such as reliance on critical raw materials, production costs, and recycling limitations, emphasizing the need for sustainable policies. Finally, the study concludes that battery storage systems are essential for a successful energy transition that ensures a clean and sustainable future, offering significant benefits for environmental sustainability, energy security, and economic development. However, to maximize their potential, it is necessary to foster technological innovation, improve regulatory frameworks, and ensure the responsible management of resources.
This work addresses the importance of battery storage systems in integrating renewable energy sources during the transition toward a sustainable energy model and future. Renewable energy sources, such as solar and wind, are essential for reducing greenhouse gas emissions. However, their intermittent nature limits their effectiveness without efficient storage technologies that enable surplus energy management and stabilize power grids. This study examines various battery technologies, including lithium-ion, sodium-sulfur, flow, and metal-air batteries, highlighting recent advancements in capacity, efficiency, and sustainability. It also discusses the technical, economic, and environmental challenges, such as reliance on critical raw materials, production costs, and recycling limitations, emphasizing the need for sustainable policies. Finally, the study concludes that battery storage systems are essential for a successful energy transition that ensures a clean and sustainable future, offering significant benefits for environmental sustainability, energy security, and economic development. However, to maximize their potential, it is necessary to foster technological innovation, improve regulatory frameworks, and ensure the responsible management of resources.
Direction
BELLO BUGALLO, PASTORA MARIA (Tutorships)
BELLO BUGALLO, PASTORA MARIA (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Characterization and removal of background in the muon system of the LHCb experiment for long-lived particles searches (Specialization in Nuclear and Particle Physics)
Authorship
A.M.A.
Master in Physics
A.M.A.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
This study presents two main contributions for long-lived particle (LLP) searches within the muon system (MS) of the LHCb experiment: (1) an improvement to the existing trigger line designed to target events with LLP signatures in the MS, and (2) the development of a new method for background suppression. The existing trigger line, which had been prescaled due to high sensitivity to data-taking conditions, was found to suffer from a hit multiplicity mismatch between Monte Carlo (MC) samples and real data. A solution currently under development is based on signal reweighting and algorithm retraining, using the reweighted MC signal sample as signal and HLT1 filtered data as background. In parallel, a novel method for background suppression is introduced, addressing a characteristic type of background associated with reconstructed tracks in the event. This background constitutes a significant contribution (50/80%) in the outer regions of the MS. A hypothetical neutral Beyond-the-Standard-Model (BSM) particle, referred to as S, is used as a benchmark model. Originating from the decay of a B meson, this particle is studied at several lifetimes (1, 5, 10, and 50 ns). The method involves extrapolating reconstructed tracks from upstream LHCb subdetectors to the MS, associating them with MS hits using a custom metric similar to a chi-squared, and training a custom neural network model to distinguish signal from background based on this and other track level features. The results demonstrate signal efficiencies of approximately 80% at a background rejection of 90% in the outer MS regions (R3 and R4) and values of 80/90% signal efficiency at a more conservative 50% background rejection in the inner regions (R1 and R2). These developments complement a previous 2024 study on BSM signal reconstruction and represent a significant advancement in LLP detection within the LHCb muon system.
This study presents two main contributions for long-lived particle (LLP) searches within the muon system (MS) of the LHCb experiment: (1) an improvement to the existing trigger line designed to target events with LLP signatures in the MS, and (2) the development of a new method for background suppression. The existing trigger line, which had been prescaled due to high sensitivity to data-taking conditions, was found to suffer from a hit multiplicity mismatch between Monte Carlo (MC) samples and real data. A solution currently under development is based on signal reweighting and algorithm retraining, using the reweighted MC signal sample as signal and HLT1 filtered data as background. In parallel, a novel method for background suppression is introduced, addressing a characteristic type of background associated with reconstructed tracks in the event. This background constitutes a significant contribution (50/80%) in the outer regions of the MS. A hypothetical neutral Beyond-the-Standard-Model (BSM) particle, referred to as S, is used as a benchmark model. Originating from the decay of a B meson, this particle is studied at several lifetimes (1, 5, 10, and 50 ns). The method involves extrapolating reconstructed tracks from upstream LHCb subdetectors to the MS, associating them with MS hits using a custom metric similar to a chi-squared, and training a custom neural network model to distinguish signal from background based on this and other track level features. The results demonstrate signal efficiencies of approximately 80% at a background rejection of 90% in the outer MS regions (R3 and R4) and values of 80/90% signal efficiency at a more conservative 50% background rejection in the inner regions (R1 and R2). These developments complement a previous 2024 study on BSM signal reconstruction and represent a significant advancement in LLP detection within the LHCb muon system.
Direction
CID VIDAL, XABIER (Tutorships)
VAZQUEZ SIERRA, CARLOS (Co-tutorships)
CID VIDAL, XABIER (Tutorships)
VAZQUEZ SIERRA, CARLOS (Co-tutorships)
Court
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
Sizing of photovoltaic collective self-consumption in the Project Aldeas Modelo framework at Cercedo-Cotobade
Authorship
L.M.C.D.C.
Master in Renewable Energies, Climate Change and Sustainable Development
L.M.C.D.C.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
09.15.2025 10:00
09.15.2025 10:00
Summary
This study presents the design, economic evaluation, and environmental assessment of a collective photovoltaic system for shared self-consumption with surplus compensation, developed within the Aldealix project of the Xunta de Galicia, in the Cercedo-Cotobade area, following Spanish Royal Decree 244/2019. The system was sized for four users with an adjusted annual consumption of 61,000 kWh, using 100 photovoltaic modules of 450 Wp, achieving a peak power of 44.85 kWp and covering approximately 87% of the electricity demand. Economic analysis indicates high profitability for the system without batteries, with an investment of 40,000 euros and a payback period of 3.15 years, while the inclusion of storage reduces economic viability. Environmentally, the installation avoids 18.45 tons of CO2 per year, contributing significantly to energy transition and sustainability goals. The results demonstrate that collective photovoltaic systems are technically feasible, economically attractive, and environmentally beneficial, supporting sustainable development in rural communities under the project framework.
This study presents the design, economic evaluation, and environmental assessment of a collective photovoltaic system for shared self-consumption with surplus compensation, developed within the Aldealix project of the Xunta de Galicia, in the Cercedo-Cotobade area, following Spanish Royal Decree 244/2019. The system was sized for four users with an adjusted annual consumption of 61,000 kWh, using 100 photovoltaic modules of 450 Wp, achieving a peak power of 44.85 kWp and covering approximately 87% of the electricity demand. Economic analysis indicates high profitability for the system without batteries, with an investment of 40,000 euros and a payback period of 3.15 years, while the inclusion of storage reduces economic viability. Environmentally, the installation avoids 18.45 tons of CO2 per year, contributing significantly to energy transition and sustainability goals. The results demonstrate that collective photovoltaic systems are technically feasible, economically attractive, and environmentally beneficial, supporting sustainable development in rural communities under the project framework.
Direction
LOPEZ AGUERA, Ma ANGELES (Tutorships)
LOPEZ AGUERA, Ma ANGELES (Tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Evslin Method for Soliton Quantization and its Applications (Specialty in Nuclear and Particle Physics)
Authorship
M.A.M.S.
Master in Physics
M.A.M.S.
Master in Physics
Defense date
09.15.2025 12:00
09.15.2025 12:00
Summary
The formalism of Linearized Soliton Perturbation Theory (LSPT) is presented, as a way to quantize solitons emerging from real scalar field theories by considering them as semiclassical coherent states. A displacement operator first shifts the states using a fixed classical soliton solution as a form factor for the field, ensuring the conservation of the Hamiltonian spectrum due to the operator's unitarity. The translation invariance and the quantum soliton ground state are then recovered by a squeeze operation, equivalent to the diagonalization of the Hamiltonian in terms of the normal modes of the field. The decay of excited shape modes through meson emissions, as well as computations made on the phi4 theory, are shown as an example of the method's power. The formalism is then extended to general complex scalar field theories in 1+1D, with the phi6 Q-ball being considered as a first example of application.
The formalism of Linearized Soliton Perturbation Theory (LSPT) is presented, as a way to quantize solitons emerging from real scalar field theories by considering them as semiclassical coherent states. A displacement operator first shifts the states using a fixed classical soliton solution as a form factor for the field, ensuring the conservation of the Hamiltonian spectrum due to the operator's unitarity. The translation invariance and the quantum soliton ground state are then recovered by a squeeze operation, equivalent to the diagonalization of the Hamiltonian in terms of the normal modes of the field. The decay of excited shape modes through meson emissions, as well as computations made on the phi4 theory, are shown as an example of the method's power. The formalism is then extended to general complex scalar field theories in 1+1D, with the phi6 Q-ball being considered as a first example of application.
Direction
ADAM , CHRISTOPH (Tutorships)
García Martín-Caro, Alberto (Co-tutorships)
ADAM , CHRISTOPH (Tutorships)
García Martín-Caro, Alberto (Co-tutorships)
Court
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
Calibration plan for radioactive samples in the Water Cherenkov Test Experiment (WCTE) (Specialization in Nuclear and Particle Physics)
Authorship
J.S.M.J.
Master in Physics
J.S.M.J.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
This work presents a study of the state of the art of neutrino oscillators and their impact on measurements performed with detectors. A general description of a Cherenkov detector is given, followed by a more detailed explanation of the Hyper-K experiment, which is inspired by Super-Kamiokande and its results. The WCTE experiment is also described. All radiation phenomena involved in neutron capture within WCTE are analyzed, highlighting the complications arising from undesired physical interactions. Finally, the study and results of the WCTE calibration using an AmBe source are presented, yielding a result of 17 Hz/PMT. Based on this value, it is concluded that to achieve a statistical error equal to or less than 1 \%, the source must remain in the detector for approximately 573 seconds.
This work presents a study of the state of the art of neutrino oscillators and their impact on measurements performed with detectors. A general description of a Cherenkov detector is given, followed by a more detailed explanation of the Hyper-K experiment, which is inspired by Super-Kamiokande and its results. The WCTE experiment is also described. All radiation phenomena involved in neutron capture within WCTE are analyzed, highlighting the complications arising from undesired physical interactions. Finally, the study and results of the WCTE calibration using an AmBe source are presented, yielding a result of 17 Hz/PMT. Based on this value, it is concluded that to achieve a statistical error equal to or less than 1 \%, the source must remain in the detector for approximately 573 seconds.
Direction
HERNANDO MORATA, JOSE ANGEL (Tutorships)
Costas Rodríguez, Diego (Co-tutorships)
HERNANDO MORATA, JOSE ANGEL (Tutorships)
Costas Rodríguez, Diego (Co-tutorships)
Court
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
Dark State Polariton and Light Propagation in EIT Media for Quantum Memories
Authorship
M.M.L.
Master's Degree in Quantum Information Science and Technology
M.M.L.
Master's Degree in Quantum Information Science and Technology
Defense date
07.01.2025 10:30
07.01.2025 10:30
Summary
This work treats the subject of quantum memories, why they are useful, and what they can contribute in the complex landscape of quantum communication systems. The theoretical basis of coherence and electromagnetically induced transparency are visited in order to learn the basis of slow light and adiabatic storing in optical control quantum memories based on EIT. Dark state polaritons are a key concept to understand and simulate these quantum memories and study their advantages and limitations. With these theoretical and practical tools, we established the limitations and advantages of adiabatic storing and retrieval on demand. Mainly, that a variable control can adiabatically stop the light and retrieve its quantum state if the pulse width is narrower than the EIT transparency window since the beginning of the interaction with the media. From the dark state polariton perspective, this behavior is elucidated and some adiabatic and non-adiabatic simulations are made to test the system.
This work treats the subject of quantum memories, why they are useful, and what they can contribute in the complex landscape of quantum communication systems. The theoretical basis of coherence and electromagnetically induced transparency are visited in order to learn the basis of slow light and adiabatic storing in optical control quantum memories based on EIT. Dark state polaritons are a key concept to understand and simulate these quantum memories and study their advantages and limitations. With these theoretical and practical tools, we established the limitations and advantages of adiabatic storing and retrieval on demand. Mainly, that a variable control can adiabatically stop the light and retrieve its quantum state if the pulse width is narrower than the EIT transparency window since the beginning of the interaction with the media. From the dark state polariton perspective, this behavior is elucidated and some adiabatic and non-adiabatic simulations are made to test the system.
Direction
Paredes Galán, Angel (Tutorships)
Ferreira Cao, Miguel (Co-tutorships)
Paredes Galán, Angel (Tutorships)
Ferreira Cao, Miguel (Co-tutorships)
Court
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
Creation of a shea butter transformation centre in Burkina Faso
Authorship
C.M.M.
Master in Renewable Energies, Climate Change and Sustainable Development
C.M.M.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
This Master's Thesis (TFM) presents the design and implementation of a shea butter processing center in Koumi, Burkina Faso. The project seeks to strengthen the economic autonomy of women producers through a sustainable production model, aligned with the Sustainable Development Goals (SDG). Through a participatory approach, the main needs of the community have been identified, integrating technological solutions such as a photovoltaic system, a water well and a remediation lagoon to ensure energy efficiency and sustainability of the production process. In addition, training workshops have been designed to improve training and promote female empowerment. The expected results include increased production and marketing of shea butter, improved socioeconomic conditions of the community and reduced environmental impact through the use of renewable energy. The study highlights the importance of international cooperation models based on equity, local sovereignty and respect for sociocultural dynamics. Finally, the implementation of a monitoring and evaluation system, the establishment of strategic alliances and the promotion of fair trade networks are recommended to ensure the long-term sustainability of the project.
This Master's Thesis (TFM) presents the design and implementation of a shea butter processing center in Koumi, Burkina Faso. The project seeks to strengthen the economic autonomy of women producers through a sustainable production model, aligned with the Sustainable Development Goals (SDG). Through a participatory approach, the main needs of the community have been identified, integrating technological solutions such as a photovoltaic system, a water well and a remediation lagoon to ensure energy efficiency and sustainability of the production process. In addition, training workshops have been designed to improve training and promote female empowerment. The expected results include increased production and marketing of shea butter, improved socioeconomic conditions of the community and reduced environmental impact through the use of renewable energy. The study highlights the importance of international cooperation models based on equity, local sovereignty and respect for sociocultural dynamics. Finally, the implementation of a monitoring and evaluation system, the establishment of strategic alliances and the promotion of fair trade networks are recommended to ensure the long-term sustainability of the project.
Direction
LOPEZ AGUERA, Ma ANGELES (Tutorships)
LOPEZ AGUERA, Ma ANGELES (Tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Capacity auctions in the Nudos de Transición Justa: A viability and competitiveness analysis
Authorship
A.N.C.
Master in Renewable Energies, Climate Change and Sustainable Development
A.N.C.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
Transition towards renewable energy sources is a global challenge driven by the need to reduce greenhouse gas emissions and mitigate the effects of climate change. In Spain, the Estrategia de Transición Justa (ETJ) not only promotes the shift towards a more sustainable energy model but also fosters socioeconomic development in regions affected by the closure of polluting industries, ensuring that the process is fair and beneficial for local communities. This paper analyzes the capacity auctions in the Nudos de Transición Justa, a mechanism designed to allocate network access to renewable energy projects in these areas. The main objective is to provide recommendations for developers, aimed at maximizing the viability and competitiveness of their proposals in these auctions. To achieve this, an analysis of the calls published so far has been conducted, comparing the evaluation criteria and how their content and weighting have evolved across different editions. This analysis identifies the key factors that projects must consider to increase their chances of success, with a special focus on socioeconomic criteria, such as job creation, economic development, equity, and social inclusion, which carry the most weight in the evaluation, highlighting the alignment of these auctions with the ETJ.
Transition towards renewable energy sources is a global challenge driven by the need to reduce greenhouse gas emissions and mitigate the effects of climate change. In Spain, the Estrategia de Transición Justa (ETJ) not only promotes the shift towards a more sustainable energy model but also fosters socioeconomic development in regions affected by the closure of polluting industries, ensuring that the process is fair and beneficial for local communities. This paper analyzes the capacity auctions in the Nudos de Transición Justa, a mechanism designed to allocate network access to renewable energy projects in these areas. The main objective is to provide recommendations for developers, aimed at maximizing the viability and competitiveness of their proposals in these auctions. To achieve this, an analysis of the calls published so far has been conducted, comparing the evaluation criteria and how their content and weighting have evolved across different editions. This analysis identifies the key factors that projects must consider to increase their chances of success, with a special focus on socioeconomic criteria, such as job creation, economic development, equity, and social inclusion, which carry the most weight in the evaluation, highlighting the alignment of these auctions with the ETJ.
Direction
RODRIGUEZ AÑON, JOSE ANTONIO (Tutorships)
RODRIGUEZ AÑON, JOSE ANTONIO (Tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Axion-like particles seachers at LHCb (Specialty in Nuclear and Particle Physics)
Authorship
A.N.C.
Master in Physics
A.N.C.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
Axion-Like Particles (ALPs) are hypothetical particles corresponding to one of the most popular extensions to the Standard Model and which solve some of the open questions of this theory, such as the strong CP problem. The LHCb is one of the detectors in the particle accelerator LHC and is presented as a powerful option for ALP detection. In this work, two projects in the context of ALP detection at LHCb are presented. The first one deals with the update of a line in the last part of the LHCb online trigger, the HLT2. The goal is to modify the parameters for the conservation of ALP candidates taking advantage of the photon coupling. The introduced changes seek to make use of the newly available data from the LHCb calorimeters during LHC Run 3. The second one proposes a complete analysis and characterization of the detection of an ALP decaying to eta pi pi in LHCb by means of a BDT classifier trained with real data and Monte Carlo simulation. The efficiency of the developed algorithm is tested on combinatorial background data collected during LHC Run 2.
Axion-Like Particles (ALPs) are hypothetical particles corresponding to one of the most popular extensions to the Standard Model and which solve some of the open questions of this theory, such as the strong CP problem. The LHCb is one of the detectors in the particle accelerator LHC and is presented as a powerful option for ALP detection. In this work, two projects in the context of ALP detection at LHCb are presented. The first one deals with the update of a line in the last part of the LHCb online trigger, the HLT2. The goal is to modify the parameters for the conservation of ALP candidates taking advantage of the photon coupling. The introduced changes seek to make use of the newly available data from the LHCb calorimeters during LHC Run 3. The second one proposes a complete analysis and characterization of the detection of an ALP decaying to eta pi pi in LHCb by means of a BDT classifier trained with real data and Monte Carlo simulation. The efficiency of the developed algorithm is tested on combinatorial background data collected during LHC Run 2.
Direction
CID VIDAL, XABIER (Tutorships)
Casais Vidal, Adrián (Co-tutorships)
CID VIDAL, XABIER (Tutorships)
Casais Vidal, Adrián (Co-tutorships)
Court
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
Reducing the urban heat island effect in parks/squares
Authorship
N.P.G.
Master in Renewable Energies, Climate Change and Sustainable Development
N.P.G.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
07.16.2025 09:30
07.16.2025 09:30
Summary
This work addresses the study of the urban heat island effect and examines whether a square in the historic center of Santiago de Compostela can act as a mitigating space for this phenomenon. Using a mixed methodology, nine urban squares were evaluated according to physical, environmental, and social criteria, selecting Praza de Fonseca as the case study. Its historical evolution and environmental composition were analyzed. A public survey was also conducted, revealing the importance that the population places on shade, vegetation, and the presence of water in public spaces. The results show that the square contributes to thermal mitigation thanks to its green infrastructure, central fountain, natural ventilation, and spatial organization. Despite the use of low-reflectivity materials such as granite and the urban planning limitations of the historic center, the space demonstrates good climatic performance. It is concluded that, even in contexts with restrictions, it is possible to improve thermal comfort through adapted and sustainable interventions. Strengthening green infrastructure or integrating climate criteria into urban planning is key to moving toward more resilient cities in the face of climate change.
This work addresses the study of the urban heat island effect and examines whether a square in the historic center of Santiago de Compostela can act as a mitigating space for this phenomenon. Using a mixed methodology, nine urban squares were evaluated according to physical, environmental, and social criteria, selecting Praza de Fonseca as the case study. Its historical evolution and environmental composition were analyzed. A public survey was also conducted, revealing the importance that the population places on shade, vegetation, and the presence of water in public spaces. The results show that the square contributes to thermal mitigation thanks to its green infrastructure, central fountain, natural ventilation, and spatial organization. Despite the use of low-reflectivity materials such as granite and the urban planning limitations of the historic center, the space demonstrates good climatic performance. It is concluded that, even in contexts with restrictions, it is possible to improve thermal comfort through adapted and sustainable interventions. Strengthening green infrastructure or integrating climate criteria into urban planning is key to moving toward more resilient cities in the face of climate change.
Direction
VAAMONDE LONGUEIRA, JOSÉ FRANCISCO (Tutorships)
VAAMONDE LONGUEIRA, JOSÉ FRANCISCO (Tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Design and characterization of a sensor integrated into a microfluidic device (Light and radiation physics)
Authorship
P.P.L.
Master in Physics
P.P.L.
Master in Physics
Defense date
07.16.2025 10:00
07.16.2025 10:00
Summary
This work focuses on the design and characterization of an optical sensor integrated into microfluidic devices made with polydimethylsiloxane (PDMS). The objective is to detect Rhodamine 6G fluorescence in liquid samples, comparing different light sources, volumes, and concentrations. The fabrication of the PDMS chips, carried out using soft lithography, was complemented by an oxygen plasma treatment to enhance surface hydrophilicity, significantly reducing the water contact angle. It was confirmed that the fluorescence intensity is directly proportional to the sample's concentration and volume. Laser excitation (408.19 nm) proved more efficient than LED excitation (450.80 nm) in inducing fluorescence. The zigzag channels demonstrated the ability to effectively mix fluids and collect the signal. Limitations included challenges in PDMS sealing, variability in experimental setup, and the presence of bubbles in the samples. Proposed improvements for future applications include the automation of experimental assembly and fluid filling.
This work focuses on the design and characterization of an optical sensor integrated into microfluidic devices made with polydimethylsiloxane (PDMS). The objective is to detect Rhodamine 6G fluorescence in liquid samples, comparing different light sources, volumes, and concentrations. The fabrication of the PDMS chips, carried out using soft lithography, was complemented by an oxygen plasma treatment to enhance surface hydrophilicity, significantly reducing the water contact angle. It was confirmed that the fluorescence intensity is directly proportional to the sample's concentration and volume. Laser excitation (408.19 nm) proved more efficient than LED excitation (450.80 nm) in inducing fluorescence. The zigzag channels demonstrated the ability to effectively mix fluids and collect the signal. Limitations included challenges in PDMS sealing, variability in experimental setup, and the presence of bubbles in the samples. Proposed improvements for future applications include the automation of experimental assembly and fluid filling.
Direction
Gómez Varela, Ana Isabel (Tutorships)
BAO VARELA, Mª CARMEN (Co-tutorships)
Gómez Varela, Ana Isabel (Tutorships)
BAO VARELA, Mª CARMEN (Co-tutorships)
Court
DE LA FUENTE CARBALLO, RAUL (Chairman)
MOURIZ CEREIJO, MARIA DOLORES (Secretary)
LOPEZ LAGO, MARIA ELENA (Member)
DE LA FUENTE CARBALLO, RAUL (Chairman)
MOURIZ CEREIJO, MARIA DOLORES (Secretary)
LOPEZ LAGO, MARIA ELENA (Member)
Design of structures for the manipulation of laser-accelerated ion beams (Specialty in Nuclear and Particle Physics)
Authorship
J.R.M.
Master in Physics
J.R.M.
Master in Physics
Defense date
09.16.2025 16:00
09.16.2025 16:00
Summary
Laser plasma accelerators can reach electric fields on the order of 10**12 V/m, enabling the development of compact accelerators. However, they present drawbacks such as the high divergence of ion beams. In this work, the use of helical targets to collimate laser accelerated protons is studied, taking as a reference the 50 TW system at L2A2 (USC). Thirty coils were designed and characterized using a reproducible motorized system. In parallel, a simulation code was implemented to reproduce the dynamics of charged particles interacting with electromagnetic fields generated by the charge pulse. The data show that helical targets significantly reduce beam divergence and allow an increase in proton energy, achieving efficiencies above 27% and energy gains greater than 2.5 MeV even for initially low-energy beams (1 or 2 MeV). These results confirm the potential of the helical geometry as a tool for beam control and postacceleration, with promising applications in medical physics.
Laser plasma accelerators can reach electric fields on the order of 10**12 V/m, enabling the development of compact accelerators. However, they present drawbacks such as the high divergence of ion beams. In this work, the use of helical targets to collimate laser accelerated protons is studied, taking as a reference the 50 TW system at L2A2 (USC). Thirty coils were designed and characterized using a reproducible motorized system. In parallel, a simulation code was implemented to reproduce the dynamics of charged particles interacting with electromagnetic fields generated by the charge pulse. The data show that helical targets significantly reduce beam divergence and allow an increase in proton energy, achieving efficiencies above 27% and energy gains greater than 2.5 MeV even for initially low-energy beams (1 or 2 MeV). These results confirm the potential of the helical geometry as a tool for beam control and postacceleration, with promising applications in medical physics.
Direction
ALEJO ALONSO, AARON JOSE (Tutorships)
ALEJO ALONSO, AARON JOSE (Tutorships)
Court
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
Project and study of hybridization of a wind-photovoltaic park in Zamora
Authorship
J.R.B.
Master in Renewable Energies, Climate Change and Sustainable Development
J.R.B.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
This work focuses on the design and analysis of a hybrid energy generation system, which combines wind and photovoltaic technology, and will be located in the province of Zamora, in Castilla y León. An in-depth study and evaluation of the mentioned area is carried out, analysing factors such as climatic conditions, expected production, access to electrical infrastructure or topography, among others, in order to select the ideal location for the installation of the park. Additionally, a series of criteria are also established for selecting the most suitable infrastructure and machinery. On the other hand, any type of impact, both environmental and social, or technical, will have to be considered, which may affect the subsequent lifting of the park, as well as its launch, having to carefully analyse the regulations corresponding. Furthermore, a hybridization study in conducted, which allows us to determine whether it is viable to hybridize several renewable energy sources for the selected location, thus evaluating efficiency and energy production throughout the year, and obtaining the best possible outcome. Finally, through an economic feasibility study, the total costs of the project are analysed, while also evaluating the economic return that the construction of this project will provide.
This work focuses on the design and analysis of a hybrid energy generation system, which combines wind and photovoltaic technology, and will be located in the province of Zamora, in Castilla y León. An in-depth study and evaluation of the mentioned area is carried out, analysing factors such as climatic conditions, expected production, access to electrical infrastructure or topography, among others, in order to select the ideal location for the installation of the park. Additionally, a series of criteria are also established for selecting the most suitable infrastructure and machinery. On the other hand, any type of impact, both environmental and social, or technical, will have to be considered, which may affect the subsequent lifting of the park, as well as its launch, having to carefully analyse the regulations corresponding. Furthermore, a hybridization study in conducted, which allows us to determine whether it is viable to hybridize several renewable energy sources for the selected location, thus evaluating efficiency and energy production throughout the year, and obtaining the best possible outcome. Finally, through an economic feasibility study, the total costs of the project are analysed, while also evaluating the economic return that the construction of this project will provide.
Direction
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Núñez Rodríguez, Alejandra (Co-tutorships)
GARCIA LOUREIRO, ANTONIO JESUS (Tutorships)
Núñez Rodríguez, Alejandra (Co-tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Measurement of chromatic dispersion of integrated optical guides. Specialty in Physics of Light and Radiation
Authorship
A.R.R.
Master in Physics
A.R.R.
Master in Physics
Defense date
02.18.2025 10:30
02.18.2025 10:30
Summary
The aim of this Master's Thesis is to study, the optical characteristics of four dielectric guides prepared from a thin layer of photoresin deposited on sodalime glass slide plates. The refractive index of photoresin is higher than that of glass, so light guidance will be possible when the angle of incidence is greater than the critical angle. The prism coupling method was used to excite the guiding modes of the guide. For this, two different procedures were carried out. Firstly, using a commercial instrument, the Metricón 2010, which allows us to measure the effective indices of the excitation modes, the refractive index and the thickness of the guides, with the transverse electric (TE) and transverse magnetic (TM) polarizations, for the wavelengths of 632.8 and 787 nm. Next, an optical system has been assembled with which to perform the prism coupling of a beam of light from a polychromatic source to the optical guides. By using filters, the effective indices of the guiding modes can be measured for five different wavelengths. With them, the thickness of the guides and their refractive index can be calculated as a function of the wavelength, which allows studying the chromatic dispersion of the optical guides, with the representation of V-B dispersion diagrams.
The aim of this Master's Thesis is to study, the optical characteristics of four dielectric guides prepared from a thin layer of photoresin deposited on sodalime glass slide plates. The refractive index of photoresin is higher than that of glass, so light guidance will be possible when the angle of incidence is greater than the critical angle. The prism coupling method was used to excite the guiding modes of the guide. For this, two different procedures were carried out. Firstly, using a commercial instrument, the Metricón 2010, which allows us to measure the effective indices of the excitation modes, the refractive index and the thickness of the guides, with the transverse electric (TE) and transverse magnetic (TM) polarizations, for the wavelengths of 632.8 and 787 nm. Next, an optical system has been assembled with which to perform the prism coupling of a beam of light from a polychromatic source to the optical guides. By using filters, the effective indices of the guiding modes can be measured for five different wavelengths. With them, the thickness of the guides and their refractive index can be calculated as a function of the wavelength, which allows studying the chromatic dispersion of the optical guides, with the representation of V-B dispersion diagrams.
Direction
DE LA FUENTE CARBALLO, RAUL (Tutorships)
MONTERO ORILLE, CARLOS (Co-tutorships)
DE LA FUENTE CARBALLO, RAUL (Tutorships)
MONTERO ORILLE, CARLOS (Co-tutorships)
Court
MOURIZ CEREIJO, MARIA DOLORES (Chairman)
AROSA LOBATO, YAGO (Secretary)
Gómez Varela, Ana Isabel (Member)
MOURIZ CEREIJO, MARIA DOLORES (Chairman)
AROSA LOBATO, YAGO (Secretary)
Gómez Varela, Ana Isabel (Member)
Study of the correlations in the arrival directions of high-energy cosmic rays at the Pierre Auger Observatory. Specialization in Nuclear and Particle Physics.
Authorship
B.R.M.
Master in Physics
B.R.M.
Master in Physics
Defense date
09.16.2025 16:00
09.16.2025 16:00
Summary
The origin of high-energy cosmic rays remains to this day one of the great unsolved mysteries of astrophysics. This is mainly due to the deflections produced by the magnetic fields permeating the universe, which cause the arrival directions of cosmic rays not to coincide with that of their source. One strategy to address this problem is the search for correlations in the arrival directions of the detected events. In this work, a study of the large and small-angular-scale correlation of events recorded by the Pierre Auger Observatory between 2004 and 2020 is presented. Different two-point statistical correlation methods are applied to determine the degree of anisotropy in the distribution of arrival directions, which is compared with isotropic distributions generated through Monte Carlo simulations. In addition to the autocorrelation study, the correlation of these events with a catalog of active galactic nuclei of the BL Lacertae type is evaluated, for which previous studies have suggested possible indications. The results obtained do not allow rejecting the null hypothesis of isotropy in the arrival directions nor finding statistically significant evidence of correlation with the BL Lacertae objects.
The origin of high-energy cosmic rays remains to this day one of the great unsolved mysteries of astrophysics. This is mainly due to the deflections produced by the magnetic fields permeating the universe, which cause the arrival directions of cosmic rays not to coincide with that of their source. One strategy to address this problem is the search for correlations in the arrival directions of the detected events. In this work, a study of the large and small-angular-scale correlation of events recorded by the Pierre Auger Observatory between 2004 and 2020 is presented. Different two-point statistical correlation methods are applied to determine the degree of anisotropy in the distribution of arrival directions, which is compared with isotropic distributions generated through Monte Carlo simulations. In addition to the autocorrelation study, the correlation of these events with a catalog of active galactic nuclei of the BL Lacertae type is evaluated, for which previous studies have suggested possible indications. The results obtained do not allow rejecting the null hypothesis of isotropy in the arrival directions nor finding statistically significant evidence of correlation with the BL Lacertae objects.
Direction
ALVAREZ MUÑIZ, JAIME (Tutorships)
CAZON BOADO, LORENZO (Co-tutorships)
ALVAREZ MUÑIZ, JAIME (Tutorships)
CAZON BOADO, LORENZO (Co-tutorships)
Court
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
Native 3D reconstruction of neutrino interacions: comparison between dense and sparsemedia. Specialty in Nuclear and Particle Physics.
Authorship
D.R.R.
Master in Physics
D.R.R.
Master in Physics
Defense date
02.18.2025 13:00
02.18.2025 13:00
Summary
The scope of this work is to study the 3D reconstruction capability of events generated by neutrino interactions within the framework of the DUNE experiment, focusing on detectors based on liquid argon (LAr-TPC) and high-pressure gas with optical readout (HP GAr-TPC). As an example, we concentrate our study on the specific channel of lambda hyperon production and decay, which is of particular interest for understanding hadronic interactions at low energies. Following this goal, we develope a simulation and event visualization Framework that, combined with specific neutrino event interaction generators leads us to a realistic representation of both the event physics and detection-related effects. Using a parametric event reconstruction, obtained from the properties of individually reconstructed tracks, we can do an in-depth study of both media.
The scope of this work is to study the 3D reconstruction capability of events generated by neutrino interactions within the framework of the DUNE experiment, focusing on detectors based on liquid argon (LAr-TPC) and high-pressure gas with optical readout (HP GAr-TPC). As an example, we concentrate our study on the specific channel of lambda hyperon production and decay, which is of particular interest for understanding hadronic interactions at low energies. Following this goal, we develope a simulation and event visualization Framework that, combined with specific neutrino event interaction generators leads us to a realistic representation of both the event physics and detection-related effects. Using a parametric event reconstruction, obtained from the properties of individually reconstructed tracks, we can do an in-depth study of both media.
Direction
GONZALEZ DIAZ, DIEGO (Tutorships)
AMEDO MARTINEZ, PABLO (Co-tutorships)
GONZALEZ DIAZ, DIEGO (Tutorships)
AMEDO MARTINEZ, PABLO (Co-tutorships)
Court
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
GOMEZ RODRIGUEZ, FAUSTINO (Chairman)
CALDERON BUSTILLO, JUAN (Secretary)
ADAM , CHRISTOPH (Member)
Simulation and analysis of the effectiveness of advanced materials for structural coatings in fusion reactors using Geant4 (Nuclear and Particle Physics)
Authorship
L.D.R.O.
Master in Physics
L.D.R.O.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
This Master's Thesis analyzes the behavior of various advanced material configurations under neutron irradiation typical of the internal environment of a fusion reactor. To this end, neutron transport simulations are carried out using the Monte Carlo method with the Geant4 toolkit. The study focuses on two representative designs from European fusion programs: one based on a liquid lithium-lead alloy, and another employing a ceramic blanket combined with beryllium as a neutron multiplier. Using a simplified geometry, the simulations enable the analysis of neutron transport and energy deposition, as well as the generation of secondary particles in each material. This framework allows for a comparative evaluation of both designs in terms of radiation shielding effectiveness, tritium breeding capability, and structural damage accumulation, quantified through atomic displacements and gas production.
This Master's Thesis analyzes the behavior of various advanced material configurations under neutron irradiation typical of the internal environment of a fusion reactor. To this end, neutron transport simulations are carried out using the Monte Carlo method with the Geant4 toolkit. The study focuses on two representative designs from European fusion programs: one based on a liquid lithium-lead alloy, and another employing a ceramic blanket combined with beryllium as a neutron multiplier. Using a simplified geometry, the simulations enable the analysis of neutron transport and energy deposition, as well as the generation of secondary particles in each material. This framework allows for a comparative evaluation of both designs in terms of radiation shielding effectiveness, tritium breeding capability, and structural damage accumulation, quantified through atomic displacements and gas production.
Direction
AYYAD LIMONGE, FRANCESC YASSID (Tutorships)
AYYAD LIMONGE, FRANCESC YASSID (Tutorships)
Court
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
ARMESTO PEREZ, NESTOR (Chairman)
ALVAREZ POL, HECTOR (Secretary)
EDELSTEIN GLAUBACH, JOSE DANIEL (Member)
Characterization of alternative electrolytes for energy storage devices
Authorship
R.S.E.L.
Master in Renewable Energies, Climate Change and Sustainable Development
R.S.E.L.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.03.2025 10:00
02.03.2025 10:00
Summary
To achieve an energy transition that can address the climate crisis, energy storage devices play a fundamental role. These include lithium-ion batteries, which offer high energy density, but present problems in terms of safety and operating temperature range, mainly due to the electrolytes they use. Therefore, in this TFM possible alternative electrolytes based on ionic liquids were characterized. Specifically, the lithium transfer capability, electrochemical stability and performance in charge and discharge cycles of the BMPyrrTFSI with LiTFSI were studied. At the same time, ionogels were developed and characterized by measurements of conductivity, electrochemical stability and calorimetry.
To achieve an energy transition that can address the climate crisis, energy storage devices play a fundamental role. These include lithium-ion batteries, which offer high energy density, but present problems in terms of safety and operating temperature range, mainly due to the electrolytes they use. Therefore, in this TFM possible alternative electrolytes based on ionic liquids were characterized. Specifically, the lithium transfer capability, electrochemical stability and performance in charge and discharge cycles of the BMPyrrTFSI with LiTFSI were studied. At the same time, ionogels were developed and characterized by measurements of conductivity, electrochemical stability and calorimetry.
Direction
SALGADO CARBALLO, JOSEFA (Tutorships)
HERREROS LUCAS, CARLOS (Co-tutorships)
SALGADO CARBALLO, JOSEFA (Tutorships)
HERREROS LUCAS, CARLOS (Co-tutorships)
Court
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
RODRÍGUEZ SOALLEIRO, ROQUE (Chairman)
GARCIA GUIMAREY, MARIA JESUS (Secretary)
SEOANE IGLESIAS, NATALIA (Member)
Optical TPCs for minimum ionizing particles: working principles (Specialty in particle and nuclear physics)
Authorship
R.S.B.
Master in Physics
R.S.B.
Master in Physics
Defense date
09.15.2025 10:00
09.15.2025 10:00
Summary
This Master’s Thesis focuses on the study and development of Optical Time Projection Chambers (OTPCs) within the framework of the DUNE experiment, one of the most ambitious projects in neutrino physics. Specifically, it addresses the design and characterization of the ND-GAr subdetector, a high-pressure gaseous argon TPC intended to complement calorimetric and spectrometric reconstruction of neutrino interactions. To reproduce its operating conditions, a technological demonstrator called GAT0 was built at IGFAE: a 20-liter optical TPC read out by scientific cameras and photomultiplier tubes. The document explains the fundamental principles of OTPCs and experimentally analyzes gaseous mixtures of Ar/CF4 and Ar/N2, focusing on their primary scintillation properties and the wavelength-shifting effect. The reference mixture, Ar/CF4, exhibits excellent optical performance, including strong suppression of diffusion and high spatial and temporal resolutions, enabling precise event reconstruction. Ar/N2, on the other hand, is explored as a more environmentally sustainable alternative due to the high global warming potential of CF4. Although promising in terms of emission spectra, its performance is less stable and degrades at higher pressures. The thesis also incorporates correction factors relevant for detector operation, such as mean quantum efficiency, optical magnification, geometrical efficiency, and electron diffusion. Among the most remarkable results is the first observation of muons at high pressure with an optical readout, a key milestone demonstrating the feasibility of this approach. Overall, the work confirms OTPCs as a viable and competitive technology for future neutrino experiments, offering advantages in simplicity, noise immunity, and three-dimensional event reconstruction.
This Master’s Thesis focuses on the study and development of Optical Time Projection Chambers (OTPCs) within the framework of the DUNE experiment, one of the most ambitious projects in neutrino physics. Specifically, it addresses the design and characterization of the ND-GAr subdetector, a high-pressure gaseous argon TPC intended to complement calorimetric and spectrometric reconstruction of neutrino interactions. To reproduce its operating conditions, a technological demonstrator called GAT0 was built at IGFAE: a 20-liter optical TPC read out by scientific cameras and photomultiplier tubes. The document explains the fundamental principles of OTPCs and experimentally analyzes gaseous mixtures of Ar/CF4 and Ar/N2, focusing on their primary scintillation properties and the wavelength-shifting effect. The reference mixture, Ar/CF4, exhibits excellent optical performance, including strong suppression of diffusion and high spatial and temporal resolutions, enabling precise event reconstruction. Ar/N2, on the other hand, is explored as a more environmentally sustainable alternative due to the high global warming potential of CF4. Although promising in terms of emission spectra, its performance is less stable and degrades at higher pressures. The thesis also incorporates correction factors relevant for detector operation, such as mean quantum efficiency, optical magnification, geometrical efficiency, and electron diffusion. Among the most remarkable results is the first observation of muons at high pressure with an optical readout, a key milestone demonstrating the feasibility of this approach. Overall, the work confirms OTPCs as a viable and competitive technology for future neutrino experiments, offering advantages in simplicity, noise immunity, and three-dimensional event reconstruction.
Direction
GONZALEZ DIAZ, DIEGO (Tutorships)
AMEDO MARTINEZ, PABLO (Co-tutorships)
GONZALEZ DIAZ, DIEGO (Tutorships)
AMEDO MARTINEZ, PABLO (Co-tutorships)
Court
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
Obtaining quantum materials by two-dimensional exfoliation
Authorship
A.T.R.
Master's Degree in Quantum Information Science and Technology
A.T.R.
Master's Degree in Quantum Information Science and Technology
Defense date
09.11.2025 09:30
09.11.2025 09:30
Summary
This work presents the experimental fabrication of two-dimensional samples of the material NbSe2 using adhesive silicone-based exfoliation techniques and their deterministic transfer onto substrates by means of micrometric positioners. Multiple iterations of the process have been carried out in order to reduce the obtained thicknesses, achieving the thickness corresponding to a single atomic layer (approx. 1.25 nm). This thickness has been measured using Scanning Tunneling Microscopy, for which the operation of the microscope (Nio STM from Nanosurf) was also optimized to enable measurements within these atomic ranges. Such nanoflakes of quasi-two-dimensional quantum material meet the required specifications as sensing elements for the development of superconducting optical sensors with single-photon sensitivity and multiphoton detection capability.
This work presents the experimental fabrication of two-dimensional samples of the material NbSe2 using adhesive silicone-based exfoliation techniques and their deterministic transfer onto substrates by means of micrometric positioners. Multiple iterations of the process have been carried out in order to reduce the obtained thicknesses, achieving the thickness corresponding to a single atomic layer (approx. 1.25 nm). This thickness has been measured using Scanning Tunneling Microscopy, for which the operation of the microscope (Nio STM from Nanosurf) was also optimized to enable measurements within these atomic ranges. Such nanoflakes of quasi-two-dimensional quantum material meet the required specifications as sensing elements for the development of superconducting optical sensors with single-photon sensitivity and multiphoton detection capability.
Direction
VAZQUEZ RAMALLO, MANUEL (Tutorships)
VAZQUEZ RAMALLO, MANUEL (Tutorships)
Court
MIRAMONTES ANTAS, JOSE LUIS (Chairman)
MAS SOLE, JAVIER (Secretary)
Fernández Pena, Anselmo Tomás (Member)
MIRAMONTES ANTAS, JOSE LUIS (Chairman)
MAS SOLE, JAVIER (Secretary)
Fernández Pena, Anselmo Tomás (Member)
Development of a hybrid cooling system for wind turbines in extreme climates (hot and cold)
Authorship
W.C.T.L.
Master in Renewable Energies, Climate Change and Sustainable Development
W.C.T.L.
Master in Renewable Energies, Climate Change and Sustainable Development
Defense date
02.19.2025 09:30
02.19.2025 09:30
Summary
This Master's Thesis (TFM) deals with the development of a hybrid cooling system for wind turbines that operate in extreme climates, where very low and high temperatures occur. The research addresses the challenges posed by these conditions, such as thermal fluctuations that affect critical components, including generators and electronic systems, reducing their efficiency and lifespan. This TFM focuses on creating a sustained and effective system that integrates active and passive cooling technologies to improve heat transfer and save essential components. The work offers a detailed analysis of the state of the art, examining current solutions and their restrictions in situations of extreme cold and heat. Likewise, the theoretical foundations that support the design are explained, covering heat transfer principles, innovative materials and cooling fluids. Through an organized methodology, a conceptual design is suggested for a hybrid system that uses heat sinks, high-tech coatings and cooling circuits managed by smart sensors. Theoretical findings indicate a notable advance in thermal efficiency, reducing dangers such as ice creation in cold climates and overheating in hot climates. This system constitutes a promising alternative to improve the longevity and performance of wind turbines in adverse conditions, establishing the bases for future research and experimental tests that confirm its effectiveness in real situations.
This Master's Thesis (TFM) deals with the development of a hybrid cooling system for wind turbines that operate in extreme climates, where very low and high temperatures occur. The research addresses the challenges posed by these conditions, such as thermal fluctuations that affect critical components, including generators and electronic systems, reducing their efficiency and lifespan. This TFM focuses on creating a sustained and effective system that integrates active and passive cooling technologies to improve heat transfer and save essential components. The work offers a detailed analysis of the state of the art, examining current solutions and their restrictions in situations of extreme cold and heat. Likewise, the theoretical foundations that support the design are explained, covering heat transfer principles, innovative materials and cooling fluids. Through an organized methodology, a conceptual design is suggested for a hybrid system that uses heat sinks, high-tech coatings and cooling circuits managed by smart sensors. Theoretical findings indicate a notable advance in thermal efficiency, reducing dangers such as ice creation in cold climates and overheating in hot climates. This system constitutes a promising alternative to improve the longevity and performance of wind turbines in adverse conditions, establishing the bases for future research and experimental tests that confirm its effectiveness in real situations.
Direction
FERNANDEZ PEREZ, JOSEFA (Tutorships)
García López, Francisco (Co-tutorships)
FERNANDEZ PEREZ, JOSEFA (Tutorships)
García López, Francisco (Co-tutorships)
Court
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
MIGUEZ MACHO, GONZALO (Chairman)
Rodríguez Figueiras, Óscar (Secretary)
REYES FERREIRA, OTILIA (Member)
Development and validation of a system for predicting molecular physicochemical properties using graph-based neural networks (Specialization in Matter Physics)
Authorship
A.V.B.
Master in Physics
A.V.B.
Master in Physics
Defense date
07.17.2025 10:30
07.17.2025 10:30
Summary
In this work, we develop a graph-based neural network aimed at predicting the partial atomic charge of organic molecules. The main novelty proposed is a methodology for data processing, which consists of splitting the molecules into fixed-size fragments, allowing the use of a single network architecture to process compounds with a variable number of atoms. This strategy proves to be useful, achieving results comparable to those reported in the current literature.
In this work, we develop a graph-based neural network aimed at predicting the partial atomic charge of organic molecules. The main novelty proposed is a methodology for data processing, which consists of splitting the molecules into fixed-size fragments, allowing the use of a single network architecture to process compounds with a variable number of atoms. This strategy proves to be useful, achieving results comparable to those reported in the current literature.
Direction
Prieto Estévez, Gerardo (Tutorships)
DOMINGUEZ ARCA, VICENTE (Co-tutorships)
Prieto Estévez, Gerardo (Tutorships)
DOMINGUEZ ARCA, VICENTE (Co-tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
Initial calibration of the NEXT-100 detector. (Mention in Nuclear and Particle Physics)
Authorship
P.V.C.
Master in Physics
P.V.C.
Master in Physics
Defense date
07.16.2025 09:00
07.16.2025 09:00
Summary
The detector NEXT-100 began operations in 2024 at Laboratorio Subterráneo de Canfranc. This is the latest in a detector series used to search for the neutrinoless double-beta decay in high-pressure, gaseous 136Xe. Observing this decay would prove the Majorana nature of neutrinos and, consequently, that these particles are their own antiparticles. This project focuses on the initial calibration of the detector. To this end, 83mKr sources are used since the this decay produces a pointlike energy deposition by emitting electrons with well-known energy (41.5 keV), it is possible to determine geometrical, temporal and energetic corrections in the whole volume of the detector.
The detector NEXT-100 began operations in 2024 at Laboratorio Subterráneo de Canfranc. This is the latest in a detector series used to search for the neutrinoless double-beta decay in high-pressure, gaseous 136Xe. Observing this decay would prove the Majorana nature of neutrinos and, consequently, that these particles are their own antiparticles. This project focuses on the initial calibration of the detector. To this end, 83mKr sources are used since the this decay produces a pointlike energy deposition by emitting electrons with well-known energy (41.5 keV), it is possible to determine geometrical, temporal and energetic corrections in the whole volume of the detector.
Direction
HERNANDO MORATA, JOSE ANGEL (Tutorships)
HERVES CARRETE, CARLOS (Co-tutorships)
HERNANDO MORATA, JOSE ANGEL (Tutorships)
HERVES CARRETE, CARLOS (Co-tutorships)
Court
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
SABORIDO SILVA, JUAN JOSE (Chairman)
ALEJO ALONSO, AARON JOSE (Secretary)
CAAMAÑO FRESCO, MANUEL (Member)
Characterization of superconducting qubits in the dispersive regime
Authorship
J.V.P.
Master's Degree in Quantum Information Science and Technology
J.V.P.
Master's Degree in Quantum Information Science and Technology
Defense date
07.01.2025 10:30
07.01.2025 10:30
Summary
Quantum computing based on superconducting circuits is presented as one of the most promising platforms in the development of quantum technologies. This work reviews the theoretical foundations of these systems, focusing on the dispersive regime of interaction between qubit and resonator, and on two different protocols (CKP and DDROP). These could be implemented in QMIO, the quantum computer of CESGA, to improve the execution times of quantum algorithms. The analysis is complemented with numerical simulations that validate the approximations used and serve as a basis for future work of a more experimental nature.
Quantum computing based on superconducting circuits is presented as one of the most promising platforms in the development of quantum technologies. This work reviews the theoretical foundations of these systems, focusing on the dispersive regime of interaction between qubit and resonator, and on two different protocols (CKP and DDROP). These could be implemented in QMIO, the quantum computer of CESGA, to improve the execution times of quantum algorithms. The analysis is complemented with numerical simulations that validate the approximations used and serve as a basis for future work of a more experimental nature.
Direction
Vázquez Ramallo, Alfonso (Tutorships)
Díaz Camacho, Guillermo (Co-tutorships)
Vázquez Ramallo, Alfonso (Tutorships)
Díaz Camacho, Guillermo (Co-tutorships)
Court
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
LIÑARES BEIRAS, JESUS (Chairman)
CASTRO PAREDES, FRANCISCO JAVIER (Secretary)
MIRAMONTES ANTAS, JOSE LUIS (Member)
Two-dimensional functional materials: Implementation of a system for the obtainement, deterministic transfer and electrical characterization of Van der Waals nanoflakes (Speciality in Matter Physics)
Authorship
P.G.V.P.
Master in Physics
P.G.V.P.
Master in Physics
Defense date
07.17.2025 10:30
07.17.2025 10:30
Summary
This work presents the implementation, for the first time in the QMatterPhotonics group at the University of Santiago de Compostela, of an experimental system for the fabrication of two-dimensional materials via exfoliation and deterministic dry-transfer. The developed setup integrates optical microscopy and three-dimensional micrometric positioning components, and employs viscoelastic polydimethylsiloxane (PDMS) films as the intermediate transfer medium. This technique enables the precise isolation and manipulation of flakes with micrometric lateral dimensions and nanometric (or even atomic) thicknesses of two-dimensional materials with weak interlayer cohesion, known as Van der Waals nanoflakes. Specifically, we have successfully obtained and transferred NbSe2 nanoflakes onto various substrates, including glass, gold, aluminum, and superconducting YBa2Cu3O7. The work also presents the fabrication of a device for the electrical characterization of the nanoflakes, produced by metal evaporation using a custom-designed micrometric shadow mask. Initial current-voltage measurements of nanoflakes transferred onto the device are also reported. These two developments represent the initial stages of a broader research project carried out by the QMatterPhotonics group aimed at the fabrication of novel optical nanosensors with single-photon sensitivity, for applications in quantum communications. Our results demonstrate the feasibility of the dry-transfer method using PDMS for the creation of such nanodevices.
This work presents the implementation, for the first time in the QMatterPhotonics group at the University of Santiago de Compostela, of an experimental system for the fabrication of two-dimensional materials via exfoliation and deterministic dry-transfer. The developed setup integrates optical microscopy and three-dimensional micrometric positioning components, and employs viscoelastic polydimethylsiloxane (PDMS) films as the intermediate transfer medium. This technique enables the precise isolation and manipulation of flakes with micrometric lateral dimensions and nanometric (or even atomic) thicknesses of two-dimensional materials with weak interlayer cohesion, known as Van der Waals nanoflakes. Specifically, we have successfully obtained and transferred NbSe2 nanoflakes onto various substrates, including glass, gold, aluminum, and superconducting YBa2Cu3O7. The work also presents the fabrication of a device for the electrical characterization of the nanoflakes, produced by metal evaporation using a custom-designed micrometric shadow mask. Initial current-voltage measurements of nanoflakes transferred onto the device are also reported. These two developments represent the initial stages of a broader research project carried out by the QMatterPhotonics group aimed at the fabrication of novel optical nanosensors with single-photon sensitivity, for applications in quantum communications. Our results demonstrate the feasibility of the dry-transfer method using PDMS for the creation of such nanodevices.
Direction
VAZQUEZ RAMALLO, MANUEL (Tutorships)
VAZQUEZ RAMALLO, MANUEL (Tutorships)
Court
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)
FERNANDEZ PEREZ, JOSEFA (Chairman)
PARDO CASTRO, VICTOR (Secretary)
CASTRO PAREDES, FRANCISCO JAVIER (Member)