A5022951019- 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
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Distributed and Parallel Computing Systems
- Astrophysics and Cosmic Phenomena
- CCD and CMOS Imaging Sensors
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- advanced mathematical theories
- Atomic and Subatomic Physics Research
- Radiation Effects in Electronics
- Superconducting Materials and Applications
- Silicon and Solar Cell Technologies
- Advanced Data Storage Technologies
- Electrostatic Discharge in Electronics
- Structural Analysis of Composite Materials
- Black Holes and Theoretical Physics
- Integrated Circuits and Semiconductor Failure Analysis
- Parallel Computing and Optimization Techniques
Rutherford Appleton Laboratory
2016-2025
Institute of Particle Physics
2024
The University of Adelaide
2019-2023
Istanbul University
2023
University College London
2020
University of Birmingham
2020
Deutsches Elektronen-Synchrotron DESY
2020
Science and Technology Facilities Council
2002-2009
Abstract The ATLAS experiment is currently preparing for an upgrade of the inner tracking detector High-Luminosity LHC. new tracker, ITk, employs all-silicon with outer strip layers. building block ITk barrel stave which consists a low-mass support structure hosting common electrical, optical and cooling services as well 28 silicon modules. In this contribution, we outline challenging aspects pre-production testing phase at Brookhaven National Laboratory. electrical characterization these...
Large area (63.6 mm/spl times/64 mm) n-on-n silicon strip detectors have been fabricated, implementing various p-stop structures in the n-side. The were characterized laboratory and beam tests. tests showed that individual structure collected less charge region between strips than other structures.
In this paper we describe the DECAL Monolithic Active Pixel Sensor (MAPS) for digital electromagnetic calorimetry. The sensor consists of a matrix 64x64 55um pixels, and provides readout at 40MHz number particles which have struck in preceding 25ns. It can be configured to report as total sum across (equivalent pad an analogue calorimeter) or per column traditional strip detector). Design operation is described, results chip characterisation are reported compared simulations. Keywords—CMOS...
The ATLAS SCT (semiconductor tracker) comprises 2112 barrel modules mounted on four concentric barrels of length 1.5m and up to 1m diameter, 1976 endcap supported by a series 9 wheels at each end the barrel. Each module is powered its own independent, floating low high voltage power supplies, referenced ground detector shield. Correspondingly, has distinct cable chain all way back service cavern. This presentation outlines structure specification Power Supply System, including level control...
Requirements of HEP experiments lead to highly integrated systems with many electrical, mechanical and thermal constraints. A complex performance optimisation is therefore required. High-speed data transmission lines are designed using copper-polyimide flexible bus tapes rather than cable harnesses minimise radiation length. Methods improve the signal integrity point-to-point links multi-drop configurations in an ultra-low-mass system described. FEA calculations essential guide a tape design...
The High Luminosity Upgrade of the LHC will require replacement Inner Detector ATLAS with Tracker (ITk) in order to cope higher radiation levels and track densities. Prototype silicon strip detector modules are currently developed their performance is studied both particle test beams X-ray beams. In previous beam measurements prototype modules, response sensors has been detailed scans across individual sensor strips. These found instances strips collecting charge areas on deviating from...
The front-end electronics of silicon detectors are typically designed to ensure optimal noise performance for the expected input charge. A combination preamplifiers and shaper circuits result in a nontrivial response injected charge, magnitude may be sizeable readout windows subsequent that which charge was initially injected. modulation discriminator threshold due superposition across multiple is coined "threshold bounce". In this paper, we report measurement bounce using modules built...
The ABCD design is a single chip implementation of the binary readout architecture for silicon strip detectors in ATLAS semiconductor tracker. prototype has been manufactured successfully DMILL process. In paper we present and measurement results. basic analogue performance evaluated using SCT module equipped with chips. digital general purpose IC tester. measurements confirmed that all blocks are fully functional chips meet requirements SCT.
Two p-in-n and one n-in-n silicon microstrip detectors were radiation-damaged tested in a beam. A comparison was made between the high resistivity wafers, low wafer. The charge collection showed clear difference detectors, which suggested that signals shared strips more irradiated detectors. Although of wafers observed body capacitance measurement, little beam test results.
The ATLAS Semiconductor Tracker (SCT) will be an assembly of silicon microstrip detector modules on a large scale, comprising 2112 barrel mounted onto four concentric barrels length 1.6m and up to 1m diameter, 1976 endcap supported by series 9 wheels at each end the region. To validate electrical performance system test has been established CERN. This paper gives brief overview SCT, highlighting assemblies studied test. off electronics software used throughout these studies is described.
The DECAL sensor is a depleted monolithic active pixel (DMAPS) being developed to explore technological solutions for digital electromagnetic calorimeters. For this application, the number of pixels above threshold used estimate shower energy and therefore size required be sufficiently small avoid hit saturation. Fully Depleted (FD) sensors have been designed fabricated in TowerJazz 180 nm CMOS standard modified imaging processes, respectively. latter uses modifications implant configuration...
This paper presents results on in situ measurements of radiation damage for the on-detector optoelectronics ATLAS SemiConductor Tracker. The come from proton-proton collisions LHC during operation 2016, 2017 and 2018. both p - i n diodes VCSELs are given compared to expectations beam tests devices same wafer, before start operation. show evidence some as expected earlier studies. magnitude is with simple extrapolations test data. do significant
The currently adopted HV biasing solution in the ATLAS detector uses one conductor for each sensor. This approach allows disabling malfunctioning sensors without affecting others, but, Upgraded detector, space constraints and material budget considerations renders this impractical. Also, increased luminosity of LHC will require more channels upgraded Tracker, as a result finer segmentation. An alternative approach, named HVMUX, to provide that consists using same line shared among several...