M. V. Gallas
A5041847840- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Distributed and Parallel Computing Systems
- Solar Thermal and Photovoltaic Systems
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- advanced mathematical theories
- Particle Accelerators and Free-Electron Lasers
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- Photovoltaic System Optimization Techniques
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Advanced Algebra and Logic
- Nonlinear Waves and Solitons
- Advanced Topics in Algebra
- Solar Radiation and Photovoltaics
- Petri Nets in System Modeling
- Muon and positron interactions and applications
- Astrophysics and Cosmic Phenomena
- Phase Change Materials Research
- solar cell performance optimization
- Algebraic structures and combinatorial models
European Organization for Nuclear Research
2004-2020
Abengoa (Spain)
2015-2017
Istanbul Technical University
2011
Universidade de Santiago de Compostela
1995-2003
Royal North Shore Hospital
1986
The GridPP Collaboration is building a UK computing Grid for particle physics, as part of the international effort towards Large Hadron Collider. project, funded by Particle Physics and Astronomy Research Council (PPARC), began in September 2001 completed its first phase 3 years later. collaboration approximately 100 researchers 19 university physics groups, Central Laboratory Councils CERN, reflecting strategic importance project. In with other European US efforts, project demonstrated...
The goal of the DIRAC experiment at CERN (PS212) is to measure $\pi^+\pi^-$ atom lifetime with 10% precision. Such a measurement would yield precision 5% on value $S$-wave $\pi\pi$ scattering lengths combination $|a_0-a_2|$. Based part collected data we present first result lifetime, $\tau=[2.91 ^{+0.49}_{-0.62}]\times 10^{-15}$ s, and discuss major systematic errors. This corresponds $|a_0-a_2|=0.264 ^{+0.033}_{-0.020} m_{\pi}^{-1}$.
The DIRAC experiment at CERN has achieved a sizeable production of $\pi^+\pi^-$ atoms and significantly improved the precision on its lifetime determination. From sample 21227 atomic pairs, 4% measurement S-wave $\pi\pi$ scattering length difference $|a_0-a_2| = (.0.2533^{+0.0080}_{-0.0078}|_\mathrm{stat}.{}^{+0.0078}_{-0.0073}|_\mathrm{syst})M_{\pi^+}^{-1}$ been attained, providing an important test Chiral Perturbation Theory.
During the EU FP7-Solugas project feasibility of solar hybrid technology with a pressurized air receiver and gas turbine was demonstrated. Over last years coupling heat to air-Brayton cycles has been identified as way accelerate CSP market penetration competing directly conventional combined cycle plants. The path commercialization this product goes through scaling solarized capacity increase outlet temperature. Soltrec focuses on development, manufacturing testing volumetric receiver,...
The optimum reflection of the solar spectrum at well‐defined incident directions as well its durability in time are, both, fundamental requirements optics thermosolar and photovoltaic energy conversion systems. stringent high performance needed for these applications implies that, almost exclusively, second face mirrors based on silver are employed this purpose. Herein, possibility to develop using other metals, such copper aluminum, is theoretically experimentally analyzed. It found that...
The goal of the DIRAC experiment at CERN is to measure with high precision lifetime π + -atom (A 2π ), which order 3×10 -15 s, and thus determine s-wave ππ-scattering lengths difference |a 0 -a 2 |.A atoms are detected through characteristic features -pairs from atom break-up (ionization) in target.We report on a first statistics atomic data sample obtained p Ni interactions 24 GeV/c proton momentum present methods separate signal background.
(1) Background: Proton minibeam radiation therapy (pMBRT) is a novel therapeutic approach with the potential to significantly increase normal tissue sparing while providing tumour control equivalent or superior standard proton therapy. For reasons of efficiency, flexibility and quality, optimal implementation pMBRT should use magnetically focussed minibeams which, however, could not yet be generated in clinical environment. In this study, we evaluated our recently proposed nozzle together...
One of the most time consuming process simulating pp interactions in ATLAS detector at LHC is simulation electromagnetic showers calorimeter. In order to speed up event several parametrisation methods are available ATLAS. this paper we present a short description frozen shower technique, together with some recent benchmarks and comparison full simulation.
The simulation program for the ATLAS experiment at CERN is currently in a full operational mode and integrated into ATLAS's common analysis framework, ATHENA. OO approach, based on GEANT4, use during DC2 data challenge has been interfaced within ATHENA to GEANT4 using LCG dictionaries Python scripting. robustness of application was proved challenge. interface added flexibility, modularity interactivity that tool needs tackle, way, different simulations setups, test beams cosmic ray studies....
The time to simulate pp collisions in the ATLAS detector is largely dominated by showering of electromagnetic particles heavy parts detector, especially barrel and endcap calorimeters. Two procedures have been developed accelerate processing these regions: (1) a fast shower parameterisation (2) frozen library. Both work generating response calorimeter electrons positrons with Geant 4, then reintroduce into simulation at runtime.
A small set of final prototypes the ATLAS Inner Detector silicon tracking system (Pixel and SemiConductor Tracker), were used to take data during 2004 Combined Test Beam. Data collected from runs with beams different flavour (electrons, pions, muons photons) a momentum range 2 180 GeV/c. Four independent methods align modules. The corrections obtained validated using known momenta beam particles shown yield consistent results among alignment approaches. From residual distributions, it is...
The simulation program for the ATLAS experiment is presently operational in a full OO environment. This important physics application has been successfully integrated into ATLAS's common analysis framework, ATHENA. In last year, following well stated strategy of transition from GEANT3 to GEANT4-based simulation, careful validation programme confirmed reliability, performance and robustness this new tool, as its consistency with results previous simulation. Generation, digitization steps on...
We present a three-pronged approach to fast electromagnetic shower simulation in ATLAS.Parameterisation is used for high-energy, libraries medium-energy, and an averaged energy deposition very low-energy particles.We comparison between the full ATLAS Monte Carlo production.