Xavier de la Broïse
A5015719910- Particle Detector Development and Performance
- Superconducting and THz Device Technology
- Neutrino Physics Research
- Stellar, planetary, and galactic studies
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Semiconductor Quantum Structures and Devices
- Surface and Thin Film Phenomena
- Atomic and Subatomic Physics Research
- Physics of Superconductivity and Magnetism
- Calibration and Measurement Techniques
- High-Energy Particle Collisions Research
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Semiconductor Detectors and Materials
- Quantum and electron transport phenomena
- Nuclear Physics and Applications
- Photonic and Optical Devices
- thermodynamics and calorimetric analyses
- Semiconductor materials and interfaces
- X-ray Spectroscopy and Fluorescence Analysis
- Force Microscopy Techniques and Applications
- Radio Frequency Integrated Circuit Design
CEA Paris-Saclay
2010-2024
Université Paris-Saclay
2018-2024
Institut de Recherche sur les Lois Fondamentales de l'Univers
2010-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2010-2024
CEA Paris-Saclay - Etablissement de Saclay
2016-2023
CEA Grenoble
2007-2018
CEA Cadarache
2018
University of Alberta
2011
National Centre for Nuclear Research
2011
Institute of Particle Physics
2011
The T2K experiment is a long baseline neutrino oscillation experiment. Its main goal to measure the last unknown lepton sector mixing angle θ13 by observing νe appearance in νμ beam. It also aims make precision measurement of known parameters, Δm232 and sin22θ23, via disappearance studies. Other goals include various cross-section measurements sterile searches. uses an intense proton beam generated J-PARC accelerator Tokai, Japan, composed beamline, near detector complex (ND280), far...
The T2K (Tokai-to-Kamioka) experiment is a long baseline neutrino oscillation in Japan, for which near detector complex (ND280), used to characterize the beam, will be built 280 m from target off-axis direction of beam produced using 50 GeV proton synchrotron J-PARC (Japan Proton Accelerator Research Complex). central part ND280 including 3 large Time Projection Chambers based on Micromegas gas amplification technology with anodes pixelated into about 125,000 pads and requiring therefore...
The ATLAS detector has been designed for operation at CERN's Large Hadron Collider. includes a complex system of liquid argon calorimeters. This paper describes the architecture and implementation custom front end electronics developed readout
The ATLAS detector has been designed for operation at the Large Hadron Collider CERN. includes electromagnetic and hadronic liquid argon calorimeters, with almost 200,000 channels of data that must be sampled LHC bunch crossing frequency 40 MHz. calorimeter electronics calibration readout are performed by custom developed specifically these purposes. This paper describes system performance electronics, including noise, energy time resolution, long term stability, taken mainly from...
The tracker of the near detector in T2K neutrino oscillation experiment comprises three time projection chambers based on micro-pattern gaseous detectors. A new readout system is being developed to amplify, condition and acquire real data produced by 124.000 channels. cornerstone a 72-channel application specific integrated circuit which switched capacitor array. Using analog memories combined with deferred digitization enables reducing initial burstiness traffic from 50 Tbps 400 Gbps...
The ATLAS detector has been built to study the reactions produced by Large Hadron Collider (LHC). includes a system of liquid argon calorimeters for energy measurements. electronics amplifying, shaping, sampling, pipelining, and digitizing calorimeter signals is implemented on set front-end electronic boards. boards are installed in crates mounted between calorimeters, where they will be subjected significant levels radiation during LHC operation. As result, all components used had an...
We present a detailed theory of scanning tunneling microscopy (STM) point defects located near the surface semiconductors. derive several conditions required to get permanent current through gap states defect and we deduce general rules concerning spectroscopy with one or two ionization levels in gap. obtain that these may be completely invisible STM spectroscopy. In particular case low-temperature-grown GaAs containing high density arsenic-related defects, show observation is related...
We develop polarimetric detector arrays for submillimeter Space astronomy. The technology is based on the all-silicon bolometer scheme established Herschel/PACS photometer. Each pixel detects two orthogonal polarization directions with an efficiency greater than 95%. Every other in array rotated by 45° to retrieve linear Stokes parameter of incident light inside Airy disc telescope optics. reduced temperature 50 mK improve sensitivity and introduced new readout schemes single or double...
Abstract Achieving high spectral and spatial resolution of wide astrophysical objects in the X-ray band will be main focus future space telescopes. We explore a new technological solution based on impedance NbSi TES detectors ( $$\sim $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mo>∼</mml:mo> </mml:math> 2 M $$\Omega <mml:mi>Ω</mml:mi> ) enabling transfer pre-amplification stage to higher temperatures (4 K) use 50 mK CMOS time-division multiplexer reduce power...
The T2K (Tokai-to-Kamioka) experiment is a long baseline neutrino oscillation in Japan, for which near detector complex (ND280), used to characterized the beam, will be built 280m from target off-axis direction of beam produced using 50 GeV proton synchrotron J-PARC (Japan Proton Accelerator Research Complex). central part ND280 including 3 large Time Projection Chambers based on Micromegas gas amplification technology with anodes pixilated into about 125,000 pads and requiring therefore...
Scanning tunneling microscopy (STM) is used to study low temperature grown GaAs layers. Excess As gives rise a high concentration of antisites (AsGa). On these point defects, spectroscopy reveals band donor states. In fact, the measured current results from pure between energy levels STM tip and AsGa level Et followed by an exchange carriers bands or states neighbor defects. We determine influence both contributions on current. show that hopping conduction required explain observation midgap...
From medical imaging to particle physics passing, among others, by space applications, integrated readout electronics (ICs) in CMOS technologies are often adopted. When a high sensitivity and low noise level required, cooling of detectors is the recommended solution. To maintain constant temperature, they very operate at nitrogen helium-4 liquids temperatures, respectively 77 K 4.2 K. At these Spice parameters MOSFET transistors may be found literature. However, their performances sub-kelvin...
Bulk-MicroMegas detectors are based on a novel technology which is of particular interest for large area Micro Pattern Gas Detectors (MPGD). Their manufacturing process combines detector construction simplicity and robustness, allowing sensitive areas to be produced at low cost. Such devices provide very good gas gain uniformity detection coverage with small dead spaces. They ideally suited in HEP applications where volume tracking material budget required. This the case, instance, T2K...