A5067915923- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Integrated Circuits and Semiconductor Failure Analysis
- Distributed and Parallel Computing Systems
- Advanced Optical Sensing Technologies
- Particle Accelerators and Free-Electron Lasers
- CCD and CMOS Imaging Sensors
- Optical Network Technologies
- Atomic and Subatomic Physics Research
- Semiconductor Lasers and Optical Devices
- Advanced Semiconductor Detectors and Materials
- Radiation Effects in Electronics
- Photonic and Optical Devices
- Scientific Computing and Data Management
- Nuclear physics research studies
European Organization for Nuclear Research
2016-2025
Institute of High Energy Physics
2013-2024
A. Alikhanyan National Laboratory
2023-2024
University of Antwerp
2024
Slovak Academy of Sciences
2018
Institute of Physics of the Slovak Academy of Sciences
2018
Goethe University Frankfurt
2012-2017
Boğaziçi University
2016
Middle East Technical University
2014-2016
University of Bristol
2016
The Compact Muon Solenoid (CMS) Experiment will be installed at the CERN Large Hadron Collider (LHC) in 2007. readout system for CMS Tracker consists of 10000000 individual detector channels that are time-multiplexed onto 40000 unidirectional analogue (40 MSample/s) optical links transmission between and 65 m distant counting room. corresponding control 2500 bi-directional digital Mb/s) based as far possible upon same components. on-detector elements (lasers photodiodes) both distributed...
We report on the first measurement of $p\mathrm{\ensuremath{\Lambda}}$ and $pp$ correlations via femtoscopy method in $p$ + Nb reactions at $\sqrt{{s}_{\mathit{NN}}}=3.18\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$, studied with High Acceptance Di-Electron Spectrometer (HADES). By comparing experimental correlation function to model calculations, a source size for pairs...
Several types of commercially available single-mode optical fibers have been irradiated in both gamma and neutron radiation fields to determine the suitability their use readout systems feature particle physics detectors. A comparative survey effect <SUP>60</SUP>Co gammas neutrons (<E<SUB>n</SUB>> approximately 6 MeV) on different fiber types, including standard germanium doped pure silica core fibers, has carried out. Selected were further exposed at four dose rates assess rate...
A radiation-hard optical link is under development for readout and control of the tracking detector in future CMS experiment at CERN Large Hadron Collider. We present system architecture based on edge-emitting InGaAsP laser-diode transmitters operating a wavelength 1.3 /spl mu/m, single mode fiber ribbons, multi-way connectors InGaAs Pin photodiode receivers. report radiation hardness tests lasers, photodiodes, fibers connectors. Increases laser threshold pin leakage currents with hadron...
This paper studies the single event upset (SEU) sensitivity of a radiation-tolerant 80-Mb/s receiver developed for CMS Tracker digital optical link. Bit error rate (BER) measurements were made while irradiating with protons and neutrons at different beam energies incident angles wide range power levels in Monte Carlo simulations have also been used to assist interpretation experimental results. As expected, photodiode is most sensitive element SEU. The fake signal induced by direct...
The inclusive production of {\Lambda} hyperons in proton-proton collisions at $\sqrt{s}$ = 3.18 GeV was measured with HADES the GSI Helmholtzzentrum f\"ur Schwerionenforschung Darmstadt. experimental data are compared to a data-based model for individual exclusive channels same reaction. contributions intermediate resonances such as {\Sigma}(1385), {\Delta}++ or N* considered detail. In particular, result partial wave analysis is accounted abundant pK$^+${\Lambda} final state. Model and show...
The production of $\Sigma^{0}$ baryons in the nuclear reaction p (3.5 GeV) + Nb (corresponding to $\sqrt{s_{NN}}=3.18$ is studied with detector set-up HADES at GSI, Darmstadt. $\Sigma^{0}$s were identified via decay $\Sigma^{0} \rightarrow \Lambda \gamma$ subsequent decays $\Lambda \pi^{-}$ coincidence a $e^{+}e^{-}$ pair from either external ($\gamma e^{+} e^{-}$) or internal (Dalitz $\gamma^{*}\rightarrow gamma conversions. differential $\Sigma^0$ cross section integrated over acceptance,...
A radiation hard 80 Mbit/s digital optical link system with 7200 fiber channels is being produced for the CMS Experiment at CERN. series of tests including damage and thermally accelerated aging have been made to qualify assure hardness reliability InGaAs photodiodes intended use in this system.
This work presents the analysis of performance RPC ToF wall HADES, located at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The behavior detector is studied in Au+Au collisions 1.23 AGeV. A main characteristic that all active areas were designed to be electrically shielded order operate high occupancies chambers. Here we show achieved regarding efficiency and timing capabilities different this special design after applied offline corrections data. Also stability intrinsic time...
Optical data links are being developed at CERN for use in the tracking system of Compact Muon Solenoid (CMS) experiment to be operated future Large Hadron Collider. The radiation environment will severe CMS tracker; simulations predict hadronic fluences > 10<SUP>14</SUP>/cm<SUP>2</SUP> over an experimental lifetime ten years, consisting a mixture neutrons, pions and protons wide energy spectrum, plus ionizing dose approximately 100 kGy. Candidate optical link components must therefore...
Radiation damage in 1310 nm InGaAsP/InP multi-quantum-well lasers caused by 0.8 MeV neutrons is compared with the from other radiation sources, terms of increase laser threshold current. The annealing behavior then presented both temperature and forward-bias current dependence. can be described a model where induced defects have uniform distribution activation energies for annealing. This used to predict long-term expected operating inside CMS tracker.
The series of validation tests for radiation hardness qualification lasers use in 46000 optical links the CMS Tracker detector at CERN, Geneva, Switzerland, are presented. These included accelerated damage, annealing, and aging studies, simulating effect doses fluences, up to 2/spl times/10/sup 14/ particles/cm/sup 2/ 100 kGy, accumulated over a ten-year operating lifetime. worst-case damage effect, closest beam-collision point, is expected be threshold current increase under 6 mA. tested...
Hadron modifications in nuclear matter are discussed connection to chiral symmetry restoration and/or hadronic many body effects. Experiments with photon, proton and heavy ion beams used probe properties of hadrons embedded at different temperatures densities. Most the information has been gathered for light vector mesons ρ ω ø. HADES is a second generation experiment operating GSI main aim study in-medium by means dielectron production SIS18/Bevelac energy range. Large acceptance excellent...
We present and discuss recent experimental activities of the HADES collaboration on open hidden strangeness production close or below elementary NN threshold. Special emphasis is put feed-down from ϕ mesons to antikaons, presence Ξ- excess in cold nuclear matter comparison statistical model rates p+p data. The implications for interpretation heavy-ion data are discussed as well.
A summary is presented of the combined effects radiation damage, accelerated annealing and ageing in 1310nm InGaAsP/InP multi-quantum-well lasers, type chosen for use CMS Tracker optical links. The damage are compared a variety sources: <sup>60</sup>Co-gamma, 0.8MeV (average energy) neutrons, 20MeV neutrons 300MeV/c pions that represent important parts spectrum particles will be encountered Tracker. relative factors various sources calculated by comparing laser threshold current increase due...
The installation of 52304 optical links for the readout and control CMS Tracker, ECAL Pixel detectors is complete. 768 96-way cables were installed tested using an time-domain reflectometer. testing was followed by connections at high density fibre patchpanels. Finally, a further round troubleshooting following feedback from system commissioning with Tracker Data Acquisition carried out. Over 90% faults found recovered, resulting overall in only 0.1% dead link channels Tracker.