S. Tzamarias
A5053928060- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Photocathodes and Microchannel Plates
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Algorithms and Data Compression
- Muon and positron interactions and applications
- Advanced Data Storage Technologies
- Digital Radiography and Breast Imaging
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Tuberous Sclerosis Complex Research
- Spectroscopy and Laser Applications
- Thermal Radiation and Cooling Technologies
- Advancements in Photolithography Techniques
Aristotle University of Thessaloniki
2017-2025
Institute for High Energy Physics
2023-2024
Institute of Science and Technology
2023-2024
University of Manchester
2023-2024
University of Geneva
2023-2024
A. Alikhanyan National Laboratory
2024
National Technical University of Athens
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2022-2023
Tzaneion General Hospital
2015-2023
The production of the Jψ resonance in 125-GeV/c p¯ and φ− interactions with Be, Cu, W targets has been measured. cross section per nucleon for is suppressed relative to lighter targets, especially at large values Feynman x, which opposite expectation from various explanations European Muon Collaboration effect. Models incorporating modifications gluon structure functions heavy show qualitative agreement data.Received 14 December 1987DOI:https://doi.org/10.1103/PhysRevLett.60.2121©1988...
Abstract The PICOSEC Micromegas (MM) detector is a precise timing gaseous based on MM operating in two-stage amplification mode and Cherenkov radiator. Prototypes equipped with cesium iodide (CsI) photocathodes have shown promising time resolutions as 24 picoseconds (ps) for Minimum Ionizing Particles. However, due to the high hygroscopicity susceptibility ion bombardment of CsI photocathodes, alternative photocathode materials are needed improve robustness MM. Diamond-like Carbon (DLC) film...
Abstract PICOSEC Micromegas (MM) is a precise timing gaseous detector based on Cherenkov radiator coupled with semi-transparent photocathode and an MM amplifying structure. The concept was successfully demonstrated through single-channel prototype, achieving sub-25 ps time resolution Minimum Ionizing Particles (MIPs). A series of studies followed, aimed at developing robust, large-area, scalable detectors high resolution, complemented by specialized fast-response readout electronics. This...
We present the results obtained by "Triple Gauge Couplings" working group during LEP2 Workshop (1994-1995). The report concentrates on measurement of $WWγ$ and $WWZ$ couplings in $e^-e^+\to W^-W^+$ or, more generally, four-fermion production at LEP2. In addition detection new interactions bosonic sector via other channels is discussed.
Hadroproduction of the $\frac{J}{\ensuremath{\psi}}$ and ${\ensuremath{\psi}}^{\ensuremath{'}}$ states has been studied in 300-GeV/c proton, antiproton, ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$Li interactions. Both total differential cross sections ${x}_{F}$ ${p}_{T}$ have measured for ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, antiproton The ratio to production determined four types beam particles.
A search has been made in 300 GeV/c π±- and proton-Li interactions for production of states that decay into J/ψ or ψ' plus one two pions. 2.5σ enhancement the π0 spectrum, possibly recently reported 1P1 state charmonium, is observed at a mass 3.527 GeV/c2. In pion we report, together with expected ψ'→J/ψ π+π−, tentative observation structure 3.836 No enhancements are seen π±π±, π±π0, π±, π± spectra.Received 9 February 1994DOI:https://doi.org/10.1103/PhysRevD.50.4258©1994 American Physical Society
We have measured the cross section for production of ψ and ψ′ in ¯p π− interactions with Be, Cu, W targets experiment E537 at Fermilab. The measurements were performed 125 GeV/c using a forward dimuon spectrometer closed geometry configuration. gluon structure functions been extracted from dσdxF spectra produced ψ's. From ¯pW data we obtain, ¯p, xG(x)=(2.15±0.7)[1−x](6.83±0.5)[1+(5.85±0.95)x]. In case, Be separately, xG(x)=(1.49±0.03)[1−x](1.98±0.06) (for π−W),...
We describe a proposal to search for an intrinsic electric dipole moment (EDM) of the proton with sensitivity \targetsens, based on vertical rotation polarization stored beam. The New Physics reach is order $10^~3$TeV mass scale. Observation EDM provides best probe CP-violation in Higgs sector, at level that may be inaccessible electron-EDM experiments. improvement $\theta_{QCD}$, parameter crucial axion and dark matter physics, about three orders magnitude.
Abstract The PICOSEC Micromegas precise timing detector is based on a Cherenkov radiator coupled to photocathode operating in semi-transparent mode and amplification structure. first proof of concept single-channel prototype was able achieve time resolution below 25 ps. One the crucial aspects development gaseous detectors applicable high-energy physics experiments modular design that enables large area coverage. 19-channel multi-pad with an active approximately 10 cm 2 suffered from...
Detectors with a time resolution of few tens picoseconds and long-term durability in high particle fluxes are necessary for an accurate vertex separation future physics experiments. The PICOSEC-Micromegas detector concept is Micro-Pattern Gaseous Detector (MPGD) based solution addressing this particular challenge. It on Micromegas coupled to Cherenkov radiator photocathode. Primary electrons from the incident particles generated photocathode fluctuations due different primary ionisation...
Abstract The PICOSEC-Micromegas detector was developed for precise timing of the arrival charged particles with a resolution bellow 30 ps. This contribution, after brief introduction presents results concerning response to single photoelectrons, estimation photoelectron yield various photocathode types, as well its performance time test beam muons. In addition, based on detailed simulation studies and stochastic model understanding are presented. Finally, related development large scale...
Neutrino oscillation experiments provide a unique window in exploring several new physics scenarios beyond the standard three flavour. One such scenario is quantum decoherence neutrino which tends to destroy interference pattern of neutrinos reaching far detector from source. In this work, we study context ESSnuSB experiment. We consider energy-independent parameter and derive analytical expressions for P$_{\mu e}$ \mu}$ probabilities vacuum. have computed capability put bounds on parameters...
This paper presents design guidelines and experimental verification of a single-channel PICOSEC Micromegas (MM) detector with an improved time resolution. The encompasses the board, vessel, auxiliary mechanical parts, electrical connectivity for high voltage (HV) signals, focusing on improving stability, reducing noise, ensuring signal integrity to optimize timing performance. A notable feature is simple fast reassembly procedure, facilitating quick replacement internal components that...
A bstract This study provides an analysis of atmospheric neutrino oscillations at the ESSnuSB far detector facility. The prospects two cylindrical Water Cherenkov detectors with a total fiducial mass 540 kt are investigated over 10 years data taking in standard three-flavor oscillation scenario. We present confidence intervals for determination ordering, θ 23 octant as well precisions on sin 2 and $$ \left|\Delta {m}_{31}^2\right| <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">...
Monitored neutrino beams are facilities where beam diagnostics enable the counting and identification of charged leptons in decay tunnel a narrow band beam. These can monitor production at single particle level (flux precision <1%) provide information about energy 10% level. The ENUBET Collaboration has demonstrated that lepton monitoring might be achieved not only by employing kaon decays but also identifying muons from π+→μ+νμ positrons decay-in-flight before hadron dump. As consequence,...
Background This study aimed, first, to angiographically investigate and analyze prostatic artery (PA) origin in a Greek male population with benign hyperplasia (BPH) treated embolization (PAE) and, second, correlate arterial anatomy technical clinical aspects of PAE. Methodology was retrospective BPH patients who underwent PAE single tertiary center Greece from June 2019 July 2022. For the first part study, PA imaged computed tomography angiography (CTA) before digital subtraction (DSA)...