A5011328436- 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
- Medical Imaging Techniques and Applications
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Superconducting Materials and Applications
- Gamma-ray bursts and supernovae
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Advanced X-ray and CT Imaging
- CCD and CMOS Imaging Sensors
- Nuclear physics research studies
- Statistical Methods and Bayesian Inference
- Superconducting and THz Device Technology
- Stochastic processes and financial applications
- Optical properties and cooling technologies in crystalline materials
European Organization for Nuclear Research
2016-2025
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
Institute of High Energy Physics
2016-2024
Middle East Technical University
2022-2023
Paul Scherrer Institute
2023
Abdus Salam Centre for Physics
2009
Indiana University Bloomington
1993
University of Oregon
1993
Heidelberg University
1990
The value of $\frac{{\ensuremath{\epsilon}}^{\ensuremath{'}}}{\ensuremath{\epsilon}}$, a measure the $\mathrm{CP}$-nonconserving direct transition from ${K}_{L}^{0}$ state to isospin-2 two pions, was determined be 0.0017\ifmmode\pm\else\textpm\fi{}0.0082, result that excludes interesting models $\mathrm{CP}$ nonconservation.
A pair of small angle silicon-tungsten (Si-W) calorimeters has been built to measure the luminosity a precision better than 0.1% in OPAL experiment at Large Electron Positron (LEP) collider CERN near Geneva. Each calorimeter contains 19 layers tungsten (W) plates and silicon (Si) detectors, corresponding total 22 radiation lengths, sampled by about 1 m/sup 2/ detectors divided into 304/spl times/64 independently read out channels. complete electronics system developed, from preamplifier up...
We report on a search for the flavor-changing neutral-current decays ${K}_{L}^{0}$\ensuremath{\rightarrow}\ensuremath{\mu}+e and ${K}_{L}^{0}$\ensuremath{\rightarrow}e+e. Limits obtained these processes are B(${K}_{L}^{0}$\ensuremath{\rightarrow}\ensuremath{\mu}+e)6.7\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}9}$ B(${K}_{L}^{0}$\ensuremath{\rightarrow}e+e)4.5\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}9}$ (90% confidence level).
We report on a search for the lepton-generation-number-violating decay ${K}_{L}^{0}\ensuremath{\rightarrow}\ensuremath{\mu}e$. find $B({K}_{L}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ifmmode\pm\else\textpm\fi{}}{e}^{\ifmmode\pm\else\textpm\fi{}})<1.9\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}9}$ (90% confidence level).
The high luminosity LHC (HL-LHC or Phase-II) is expected to increase the instantaneous of by a factor about five, delivering 0∼25 fb −1 per year between 2025 and 2035. Under these conditions performance degradation detectors due integrated radiation dose/fluence will need be addressed. CMS collaboration planning upgrade many detector components, including forward calorimeters. replacement for existing endcap preshower, electromagnetic hadronic calorimeters called High Granularity Calorimeter...
The replacement of the existing endcap calorimeter in Compact Muon Solenoid (CMS) detector for high-luminosity LHC (HL-LHC), scheduled 2027, will be a high granularity calorimeter. It provide detailed position, energy, and timing information on electromagnetic hadronic showers immense pileup HL-LHC. High Granularity Calorimeter (HGCAL) use 120-, 200-, 300-μm-thick silicon (Si) pad sensors as main active material sustain 1 MeV neutron equivalent fluences up to about 1016 neq cm−2. In order...
This note is a short summary of the workshop on "Energy and time measurements with high-granular silicon devices" that took place 13/6/16 14/6/16 at DESY/Hamburg in frame first AIDA-2020 Annual Meeting. tries to put forward trends could be spotted emphasise particular open issues were addressed by speakers.
We report on the design, simulation and test of Low Gain Avalanche Diodes (LGADs) which utilize a buried gain layer. The layer is formed by patterned implantation 50-micron thick float zone substrate wafer-bonded to low resistivity carrier. This then followed epitaxial deposition ≈ 3 micron-thick high amplification region. topside processed with junction edge termination guard ring structures incorporates an AC-coupled cathode implant. design allows for independent adjustment depth density,...
FunctionalityThe present CMS Silicon Tracker (Pixel and Strips) provides fast, robust, efficient high resolution Tracking Impact Parameter determination.An upgraded for the SLHC should at least maintain this performance, in much more difficult higher luminosity environment.Improved impact parameter determination, if reasonably achievable, would clearly be desirable, as directly translate into useful improvements to b-jet tagging.A dominant performance-limiting factor is than initially hoped...
The CMS silicon strip tracker is the largest device of its kind ever built, and first instance a large collider detector relying exclusively on this all-silicon technology for tracking. With an instrumented surface over 200 m 2 , nine million readout channels, it two orders magnitude larger than vertex detectors LEP experiments, 30–40 times inner CDF D0 experiments at Tevatron. It makes use microelectronics technology, but deploys macroscale. photograph below shows completed tracker, ready...