F. Doherty
- Particle Detector Development and Performance
- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- CCD and CMOS Imaging Sensors
- Advancements in Semiconductor Devices and Circuit Design
- 3D IC and TSV technologies
- Radiation Effects in Electronics
- Semiconductor materials and devices
- Silicon Carbide Semiconductor Technologies
- Radio Frequency Integrated Circuit Design
- Silicon and Solar Cell Technologies
- Medical Imaging Techniques and Applications
- Semiconductor Lasers and Optical Devices
- Microwave Engineering and Waveguides
- European and International Contract Law
- Advanced MEMS and NEMS Technologies
- Particle Accelerators and Free-Electron Lasers
- Electronic Packaging and Soldering Technologies
- Chemistry and Stereochemistry Studies
- Advanced Antenna and Metasurface Technologies
- Infrared Target Detection Methodologies
- Particle accelerators and beam dynamics
- High-Energy Particle Collisions Research
- Atomic and Subatomic Physics Research
- Electrostatic Discharge in Electronics
University of Glasgow
2008-2024
Institut de Microelectrònica de Barcelona
2016
Centro Nacional de Microelectrónica
2016
University of Liverpool
2014
University of Manchester
2008
University of Bergen
2007
This paper describes the evaporative system used to cool silicon detector structures of inner sub-detectors ATLAS experiment at CERN Large Hadron Collider. The motivation for an system, its design and construction are discussed. In detail particular requirements detector, technical choices qualification manufacture final components addressed. Finally results initial operational tests reported. Although entire described, focuses on on-detector aspects. Details cooling plant will be discussed...
A new avalanche silicon detector concept is introduced with a low gain in the region of ten, known as Low Gain Avalanche Detector, LGAD. The detector's characteristics are simulated via full process simulation to obtain required doping profiles which demonstrate desired operational high breakdown voltage (500 V) and 10 at 200 V reverse bias for X-ray detection. first detectors fabricated by Micron Semiconductor Ltd presented. multiplication junctions were measured SIMS reproduced simulating...
For the Phase-II Upgrade of ATLAS Detector [1], its Inner Detector, consisting silicon pixel, strip and transition radiation sub-detectors, will be replaced with an all new 100% tracker, composed a pixel tracker at inner radii outer radii. The future include 11,000 sensor modules in central region (barrel) 7,000 forward (end-caps), which are foreseen to constructed over period 3.5 years. construction each module consists series assembly quality control steps, were engineered identical for...
The radiation hardness of semiconductor detectors for harsh environments, including nuclear, space, and particle physics, may be enhanced by a number strategies. We examine the use materials alternative to silicon, namely silicon carbide gallium nitride, as well nonconventional geometry called "3-D." Fabricated were irradiated fast hadron fluences 10/sup 14/ cm/sup -2/ measurements made I--V, C--V charge collection efficiency before after irradiation. performance in each case was found...
Abstract The LHCb detector has undergone a major upgrade for LHC Run 3. This Upgrade I facilitates operation at higher luminosity and utilises full-detector information the collision rate, critically including use of vertex information. A new locator system, VELO Upgrade, been constructed. core element are double-sided pixelated hybrid silicon modules which operate in vacuum close to beam high radiation environment. construction quality assurance tests these described this paper. incorporate...
The ATLAS SemiConductor Tracker (SCT) is a silicon-strip tracking detector which forms part of the inner detector. SCT designed to track charged particles produced in proton-proton collisions at Large Hadron Collider (LHC) CERN an energy 14 TeV. tracker made up central barrel and two identical end-caps. contains 2112 silicon modules, while each end-cap 988 modules. overall performance depends not only on intrinsic measurement precision modules but also characteristics whole assembly,...
The ATLAS SemiConductor Tracker (SCT) is one of the largest existing semiconductor detectors. It situated between Pixel detector and Transition Radiation at four interaction points Large Hadron Collider (LHC). During 2006-2007 was lowered into cavern installed in its final position. For assembly, integration commissioning phase, a complete Detector Control System (DCS) developed to ensure safe operation tracker. This included control individual powering silicon modules, bi-phase cooling...
The entire ATLAS inner tracking system will be replaced for operation at the HL-LHC . This include a significantly larger pixel detector of approximately 15 m2. For this project, it is critical to reduce mass hybrid modules and requires thinning both sensor readout chips about 150 micrometres each. silicon leads low bump yield SnAg bumps due bad co-planarity two solder reflow stage creating dead zones within array. In case FEI4 chip thinned 100 micrometres, concave, with front side in...
ATLAS is proposing to replace the entire tracking system for HL-LHC operation. The ``Letter of Intent'' baseline pixel size at higher radii was 50 × 250μm2 (φ η), based on FE-I4 readout chip, and this optimized central barrel region. detector performance in end-cap disks can benefit from enhanced resolution radial direction improve impact parameter z-coordinate (along beam line) high η tracks, which critical pile-up environment HL-LHC. So called ``strixel'' geometries, with long narrow...