I.-A. Melzer-Pellmann
A5104507239- 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
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Computational Physics and Python Applications
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Nuclear reactor physics and engineering
- Superconducting Materials and Applications
- Scientific Measurement and Uncertainty Evaluation
- Noncommutative and Quantum Gravity Theories
- Pulsars and Gravitational Waves Research
- Optical properties and cooling technologies in crystalline materials
- Gas Dynamics and Kinetic Theory
- Radiation Therapy and Dosimetry
- Gamma-ray bursts and supernovae
- Parallel Computing and Optimization Techniques
- Radiomics and Machine Learning in Medical Imaging
Deutsches Elektronen-Synchrotron DESY
2016-2025
A. Alikhanyan National Laboratory
2022-2024
University of Antwerp
2023-2024
Vrije Universiteit Brussel
2023-2024
European Organization for Nuclear Research
2012-2024
Institute of High Energy Physics
2013-2024
Universität Hamburg
2011-2023
National Centre of Scientific Research "Demokritos"
2012
Institute of Nuclear and Particle Physics
2012
We present measurements of the reduction light output by plastic scintillators irradiated in CMS detector during 8 TeV run Large Hadron Collider and show that they indicate a strong dose rate effect. The damage for given is larger lower exposures. results agree with previous effects, but are stronger due to very low rates probed. scaling consistent expected from diffusion effects.
If new phenomena beyond the Standard Model will be discovered at LHC, properties of particles could determined with data from High-Luminosity LHC and a future linear collider like ILC. We discuss possible interplay between measurements two accelerators in concrete example, namely full SUSY model which features small $$ \widetilde{\tau }_1$$ -LSP mass difference. Various channels have been studied using Snowmass 2013 combined detector implementation Delphes simulation package, as well...
The production of excited charm, D_1(2420)^0 and D_2^*(2460)^0, charm-strange, D_{s1}(2536)^+-, mesons in ep collisions was measured with the ZEUS detector at HERA using an integrated luminosity 126 pb^-1. Masses, widths helicity parameters were determined. yields converted to rates c quarks hadronising as a given charm meson ratios dominant D_2^*(2460)^0 D_{s1}(2536)^+- branching fractions. A search for radially meson, D^{*'}(2640)^+-, also performed. results are compared those previously...
A search for events with an isolated high-energy lepton and large missing transverse momentum has been performed the ZEUS detector at HERA using a total integrated luminosity of 504 $\mathrm{pb}^{-1}$. The results agree well Standard Model predictions. cross section production single $W$ bosons in electron-proton collisions unpolarised electrons is measured to be $0.89^{+0.25}_{-0.22}$ (stat.) $\pm{0.10}$ (syst.) pb.
The detector control system of the CMS hadron calorimeter provides 40.0788 MHz LHC clock to front end electronics and supplies synchronization signals I2C communication. Pedestals diagnostic bits are controlled, temperatures voltages read out. SIPM actively stabilized by temperature readback generation correction drive Peltier regulation system. Overall interfacing databases experimental DAQ software is provided CCM Server. We report on design development status, implementation schedule this
Simplified models have become a widely used and important tool to cover the more diverse phenomenology beyond constrained SUSY models. However, they come with substantial number of caveats themselves, great care needs be taken when drawing conclusions from limits based on simplified approach. To illustrate this issue concrete example, we examine applicability model results series full points which all feature small stau-LSP mass difference, are compatible electroweak flavor precision...
The Phase I upgrade of the CMS Hadron Endcap Calorimeters consists new photodetectors (Silicon Photomultipliers in place Hybrid Photo-Diodes) and front-end electronics. will eliminate noise calibration drift Photo-Diodes enable mitigation radiation damage scintillators wavelength shifting fibers with a larger spectral acceptance Silicon Photomultipliers. also includes increased longitudinal segmentation calorimeter readout, which allows pile-up recalibration due to depth-dependent damage. As...
The next generation Front-End Controller (ngFEC) is the system responsible for slow and fast control within Phase-I Upgrade of CMS Hadron Calorimeters. It based on FC7, a μTCA compatible Advanced Mezzanine Card developed at CERN built around Xilinx Kintex®-7 FPGA. ngFEC decodes 40.0788 MHz LHC clock synchronization signals received from backplane distributes them to front-end electronics through six GBT links. latency fixed across power cycles. Even if direct link module broken, redundancy...