I. Efthymiopoulos

ORCID: 0000-0001-9237-4015
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Particle physics theoretical and experimental studies
  • High-Energy Particle Collisions Research
  • Quantum Chromodynamics and Particle Interactions
  • Particle Detector Development and Performance
  • Neutrino Physics Research
  • Particle accelerators and beam dynamics
  • Particle Accelerators and Free-Electron Lasers
  • Superconducting Materials and Applications
  • Astrophysics and Cosmic Phenomena
  • Dark Matter and Cosmic Phenomena
  • Radiation Detection and Scintillator Technologies
  • Radiation Therapy and Dosimetry
  • Muon and positron interactions and applications
  • Nuclear Physics and Applications
  • Computational Physics and Python Applications
  • Cosmology and Gravitation Theories
  • Graphite, nuclear technology, radiation studies
  • Distributed and Parallel Computing Systems
  • Black Holes and Theoretical Physics
  • Radiation Effects in Electronics
  • Fusion materials and technologies
  • Atomic and Subatomic Physics Research
  • Nuclear reactor physics and engineering
  • Atomic and Molecular Physics
  • Laser-Plasma Interactions and Diagnostics

European Organization for Nuclear Research
2015-2024

National Centre of Scientific Research "Demokritos"
1990-2022

Rutherford Appleton Laboratory
2018

Ludwig-Maximilians-Universität München
2011

Universitat Autònoma de Barcelona
1993-2011

University of Geneva
2001-2011

Istanbul Technical University
2011

Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Cosenza
2010

University of Calabria
2010

Azienda Ospedaliera di Cosenza
2010

The OPERA neutrino oscillation experiment has been designed to prove the appearance of ντ in a nearly pure νμbeam (CNGS) produced at CERN and detected underground Hall C Gran Sasso Laboratory, 730 km away from source. In OPERA, τ leptons resulting interaction ντare target units called bricks made nuclear emulsion films interleaved with lead plates. contains 150000 such bricks, for total mass 1.25 kton, arranged into walls plastic scintillator strips. detector is split two identical...

10.1088/1748-0221/4/04/p04018 article EN Journal of Instrumentation 2009-04-29

NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus nucleus-nucleus collisions at the CERN Super Proton Synchrotron. It recorded first physics data with beams 2009 ion (secondary 7Be beams) 2011. has greatly profited from long development of proton sources accelerator chain as well H2 beamline North Area. The latter recently been modified also serve fragment separator needed produce Be for...

10.1088/1748-0221/9/06/p06005 article EN cc-by Journal of Instrumentation 2014-06-05

We report test beam studies of 11% the production ATLAS Tile Calorimeter modules. The modules were equipped with front-end electronics and all calibration systems planned for final detector. used muon, electron hadron beams ranging in energy from 3 to 350 GeV. Two independent showed that light yield calorimeter was ∼70pe/GeV, exceeding design goal by 40%. Electron provided a at electromagnetic scale. Over 200 cells variation response 2.4%. linearity also measured. Muon an intercalibration...

10.1016/j.nima.2009.04.009 article EN cc-by-nc-nd Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2009-04-20

Abstract A design study, named $${\text {ESS}}\nu {\text {SB}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mtext>ESS</mml:mtext><mml:mi>ν</mml:mi><mml:mtext>SB</mml:mtext></mml:mrow></mml:math> for European Spallation Source neutrino Super Beam, has been carried out during the years 2018–2022 of how 5 MW proton linear accelerator under construction in Lund, Sweden, can be used to produce world’s most intense long-baseline beam. The high beam intensity will allow...

10.1140/epjs/s11734-022-00664-w article EN cc-by The European Physical Journal Special Topics 2022-11-16

Abstract Relativistic electron-positron plasmas are ubiquitous in extreme astrophysical environments such as black-hole and neutron-star magnetospheres, where accretion-powered jets pulsar winds expected to be enriched with pairs. Their role the dynamics of is many cases believed fundamental, but their behavior differs significantly from typical electron-ion due matter-antimatter symmetry charged components. So far, our experimental inability produce large yields positrons quasi-neutral...

10.1038/s41467-024-49346-2 article EN cc-by Nature Communications 2024-06-12

This document summarizes the work of Accelerator Working Group (AWG) International Scoping Study (ISS) a Future Neutrino Factory and Superbeam Facility. The main goal activity was to reach consensus on baseline design for complex, including proton driver parameters, choice target, front-end design, acceleration system decay ring geometry. Another explore commonality, if any, between those or Beta Beam facility. In general, requirements either latter facilities are less stringent than...

10.1088/1748-0221/4/07/p07001 article EN Journal of Instrumentation 2009-07-02

The next generation neutrino observatory proposed by the LBNO collaboration will address fundamental questions in particle and astroparticle physics. experiment consists of a far detector, its first stage 20 kt LAr double phase TPC magnetised iron calorimeter, situated at 2300 km from CERN near detector based on highpressure argon gas TPC. long baseline provides unique opportunity to study flavour oscillations over their 1st 2nd oscillation maxima exploring L/E behaviour, distinguishing...

10.1007/jhep05(2014)094 article EN cc-by Journal of High Energy Physics 2014-05-01

In June 2012, an Expression of Interest for a long-baseline experiment (LBNO) has been submitted to the CERN SPSC. LBNO considers three types neutrino detector technologies: double-phase liquid argon (LAr) TPC and magnetised iron as far detectors. For near detector, high-pressure gas embedded in calorimeter magnet is baseline design. A mandatory milestone concrete prototyping effort towards envisioned large-scale detectors, accompanying campaign measurements aimed at assessing associated...

10.48550/arxiv.1409.4405 preprint EN other-oa arXiv (Cornell University) 2014-01-01

Abstract In this paper, we present the physics performance of ESSnuSB experiment in standard three flavor scenario using updated neutrino flux calculated specifically for configuration and migration matrices far detector. Taking conservative systematic uncertainties corresponding to a normalization error $$5\%$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>5</mml:mn> <mml:mo>%</mml:mo> </mml:mrow> </mml:math> signal $$10\%$$ <mml:mn>10</mml:mn> background,...

10.1140/epjc/s10052-021-09845-8 article EN cc-by The European Physical Journal C 2021-12-01

Two samples of exclusive semileptonic decays, 579 B0 →D∗+ℓ−νℓ events and 261 → D+ℓ−νℓ events, are selected from approximately 3.9 million hadronic Z decays collected by the ALEPH detector at LEP. From reconstructed differential decay rate each sample, product form factor F(ω) zero recoil D(∗)+ meson CKM matrix element |Vcb| measured to be FD∗+(1)|Vcb| = (31.9 ± 1.8stat 1.9syst) × 10−3, FD+(1)|Vcb| (27.8 6.8stat 6.5syst) 10−3. The ratio factors FD+(1) FD∗+(1) is FD+(1)FD∗+(1) 0.87 0.22stat...

10.1016/s0370-2693(97)00071-3 article EN cc-by-nc-nd Physics Letters B 1997-03-01

10.1016/j.nima.2010.04.054 article EN Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2010-05-18
Coming Soon ...