J. Große-Knetter
A5102904140- 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
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- CCD and CMOS Imaging Sensors
- Radiation Effects in Electronics
- Diamond and Carbon-based Materials Research
- Education Methods and Technologies
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- advanced mathematical theories
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Muon and positron interactions and applications
- Big Data Technologies and Applications
- Advanced X-ray and CT Imaging
University of Göttingen
2016-2025
Northern Illinois University
2016-2024
A. Alikhanyan National Laboratory
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
Atlas Scientific (United States)
2024
The University of Adelaide
2014-2023
AGH University of Krakow
2023
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2022-2023
Université Paris Cité
2023
The silicon pixel tracking system for the ATLAS experiment at Large Hadron Collider is described and performance requirements are summarized. Detailed descriptions of detector electronics sensors given. design, fabrication, assembly modules presented. Data obtained from test beams as well studies using cosmic rays also discussed.
Beam test results of the radiation tolerance study chemical vapour deposition (CVD) diamond against different particle species and energies is presented. We also present beam on independence signal size incident rate in charged detectors based un-irradiated irradiated poly-crystalline CVD over a range fluxes from 2 kHz/cm2 to 10 MHz/cm2. The pulse height sensors was measured with readout electronics peaking time 6 ns. In addition functionality 3D devices demonstrated tests are shown be...
Optical links are used for the readout of 4088 silicon microstrip modules that make up SemiConductor Tracker ATLAS experiment at CERN Large Hadron Collider (LHC). The optical link requirements reviewed, with particular emphasis on very demanding environment LHC. on-detector components have to operate in high radiation levels 10 years, no maintenance, and there strict power consumption, material space. A novel concept packaging optoelectronics has been developed meet these requirements....
The high-voltage (HV-) CMOS pixel sensors offer several good properties: a fast charge collection by drift, the possibility to implement relatively complex in-pixel electronics and compatibility with commercial processes. sensor element is deep n-well diode in p-type substrate. contains electronics. main mechanism drift shallow, high field region, which leads radiation tolerance. We are currently evaluating use of detectors implemented 180 nm HV-CMOS technology for high-luminosity ATLAS...
Abstract We have measured the radiation tolerance of poly-crystalline and single-crystalline diamonds grown by chemical vapor deposition (CVD) process measuring charge collected before after irradiation in a 50 m pitch strip detector fabricated on each diamond sample. irradiated one group sensors with 800 MeV protons, second 24 GeV steps, to protons cm −2 respectively. observe sum mean drift paths for electrons holes both CVD decreases fluence from its initial value according simple damage...
Diamond devices have now become ubiquitous in the LHC experiments, finding applications beam background monitoring and luminosity measuring systems. This sensor material is maturing to point that large pads existing diamond detectors are being replaced by highly granular tracking devices, both pixel strip configurations, for detector systems will be used Run II at beyond. The RD42 collaboration has continued seek out additional manufacturers quantify limits of radiation tolerance this...
We measured the radiation tolerance of commercially available diamonds grown by Chemical Vapor Deposition process measuring charge created a 120 GeV hadron beam in 50 μm pitch strip detector fabricated on each diamond sample before and after irradiation. irradiated one group samples with 70 MeV protons, second fast reactor neutrons (defined as energy greater than 0.1 MeV), third 200 pions, steps, to (8.8±0.9) × 1015 protons/cm2, (1.43±0.14) 1016 neutrons/cm2, (6.5±1.4) 1014 pions/cm2,...
Abstract The High Granularity Timing Detector (HGTD) will be installed in the ATLAS detector to mitigate pile-up effects during Luminosity (HL) upgrade of Large Hadron Collider (LHC) at CERN. design HGTD is based on use Low Gain Avalanche Detectors (LGADs), with an active thickness 50 μm, that allow measure high-precision time arrival particles. improve particle-vertex assignment by measuring track a resolution ranging from approximately 30 ps beginning HL-LHC operations end. Performances...
EUDAQ is a generic data acquisition software developed for use in conjunction with common beam telescopes at charged particle lines. Providing high-precision reference tracks performance studies of new sensors, are essential the research and development towards future detectors high-energy physics. As time highly limited resource, has been designed reliability ease-of-use mind. It enables flexible integration different independent devices under test via their specific systems into top-level...
Luminosity upgrades are discussed for the LHC (HL-LHC) which would make updates to detectors necessary, requiring in particular new, even more radiation-hard and granular, sensors inner detector region.
A small set of final prototypes the ATLAS Inner Detector silicon tracking system (Pixel and SemiConductor Tracker), were used to take data during 2004 Combined Test Beam. Data collected from runs with beams different flavour (electrons, pions, muons photons) a momentum range 2 180 GeV/c. Four independent methods align modules. The corrections obtained validated using known momenta beam particles shown yield consistent results among alignment approaches. From residual distributions, it is...
An additional inner layer for the existing ATLAS Pixel Detector, called Insertable B-Layer (IBL), is under design and it will be installed by Phase I. New front-end readout ASICs fabrication (FE-I4) replace previous chips in this layer. The new system features higher speed - 160Mb/s per ASIC simplified control. current data acquisition chains are composed of chips, Back-Of-Crate (BOCs) cards ReadOut Driver (RODs). This paper presents a proposal ROD board, which implements modern FPGAs...