A5004378338- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Crystallography and Radiation Phenomena
- Particle Detector Development and Performance
- Neutrino Physics Research
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Dark Matter and Cosmic Phenomena
- Advanced X-ray Imaging Techniques
- Nuclear materials and radiation effects
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Nuclear Physics and Applications
- Geophysical Methods and Applications
- Advanced Optical Sensing Technologies
- Advanced Semiconductor Detectors and Materials
- Radiation Therapy and Dosimetry
- Black Holes and Theoretical Physics
- CCD and CMOS Imaging Sensors
- Nuclear physics research studies
- Stochastic processes and statistical mechanics
- Integrated Circuits and Semiconductor Failure Analysis
- Analytical Chemistry and Sensors
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2020-2024
Institut National de Physique Nucléaire et de Physique des Particules
2009-2024
Université Paris-Saclay
2021-2024
Centre National de la Recherche Scientifique
2009-2024
RWTH Aachen University
2023
Universitat Ramon Llull
2023
Université Paris Cité
2023
Université Paris-Sud
2012-2022
GANIL
2003-2019
Budker Institute of Nuclear Physics
2012
Two high-accuracy goniometers equipped with two bent silicon crystals were installed in the betatron cleaning insertion of CERN Large Hadron Collider (LHC) during its long shutdown. First beam tests recently performed at LHC 450 GeV/c and 6500 stored proton beams to investigate feasibility halo collimation assisted by crystals. For first time channeling protons was observed a particle accelerator. A strong reduction losses due nuclear inelastic interactions aligned crystal comparison...
Bent silicon crystals mounted on high-accuracy angular actuators were installed in the CERN Super Proton Synchrotron (SPS) and extensively tested to assess feasibility of crystal-assisted collimation circular hadron colliders. The adopted layout was exploited regularly upgraded for about a decade by UA9 Collaboration. investigations provided compelling evidence strong reduction beam losses induced nuclear inelastic interactions aligned comparison with amorphous orientation. A conceptually...
This work reports on the characterization of Multi-Pixel Photon Counter (MPPC) detectors as a function temperature and bias voltage. Devices 1×1 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> 3×3 total area 50×50 μm μcell size produced by Hamamatsu Photonics have been studied. The has varied from -110°C to -50°C using cryostat cooled liquid nitrogen 0 38°C climatic chamber. Important electrical parameters MPPC gain, breakdown...
This paper is devoted to an experimental study of focusing and defocusing positively charged particle beams with the help specially bent single crystals. Four crystals have been fabricated for this purpose. The studies performed at CERN SPS in $400\text{ }\text{ }\mathrm{GeV}/c$ proton $180\text{ pion beams. results measurements beam envelopes are presented. rms size horizontal profile focus was 5--8 times smaller than exit measured focal lengths were 4--21 m. good agreement calculations....
A deflection efficiency of about 61% was observed for 400 GeV/c protons due to channeling, most strongly along the 〈110〉 axis a bent silicon crystal. It is comparable with in planar channeling and considerably larger than case 〈111〉 axis. The measured probability inelastic nuclear interactions only 10% its amorphous level whereas (110) planes it 25%. High small beam losses make this axial orientation crystal useful tool steering high energy charged particles.
Inelastic nuclear interaction probability of 400 GeV/c protons interacting with bent silicon crystals was investigated, in particular for both types installed at the CERN Large Hadron Collider beam collimation purposes. In comparison to amorphous scattering interaction, planar channeling this is $$\sim 36\%$$ quasi-mosaic type (planes (111)), and 27\%$$ strip (110)). Moreover, absolute inelastic axial orientation, along $$\langle 110\rangle $$ axis, estimated first time, finding a value...
This work reports on the electrical (static and dynamic) as well optical characteristics of a prototype matrix Silicon Photomultipliers (SiPM). The consists 4 × SiPM's same substrat fabricated at FBK-irst (Trento, Italy). Each SiPM has an area 1 1mm2 it is composed 625 microcells connected in parallel. microcell GM-APD (n+/p junction P+ substrate) with 40 μm2 series its integrated polysilicon quenching resistance. static breakdown voltage, resistance, post-breakdown dark current dynamic gain...
Strong reduction of multiple scattering for channeled particles has been observed in an experiment on the deflection a 180 GeV/c π+-meson beam by bent silicon crystals. The RMS deflections due to were about six times smaller than non-channeled ones. It was shown that approach suggested recently description using experimental data random crystal orientations gives fair agreement with experiment.
The device called Cherenkov detector for proton Flux Measurement is going to be installed inside of the primary vacuum Super Proton Synchrotron monitor a secondary beam produced by bent crystal inserted in halo.Test this with 449 MeV electrons was performed at test facility Frascati.We measure 0.62 p.e. per incoming electron and resolution 15% 100 electrons.
The use of bent crystals for beam manipulation in particle accelerators is a well-assessed concept rapidly evolving into practical application. experiments the UA9 collaboration at CERN-SPS have played key role quantitative understanding channeling and volume reflection mechanisms. Investigation process close to circulating ideally requires vacuum detectors resolving single particle, which should be located inside pipe itself. Cherenkov radiators are potential candidates such functionality...
The UA9 setup, installed in the Super Proton Synchrotron (SPS) at CERN, was exploited for a proof of principle double-crystal scenario, proposed to measure electric and magnetic moments short-lived baryons high-energy hadron collider, such as Large Hadron Collider (LHC). Linear angular actuators were used position crystals establish required beam configuration. Timepix detectors high-sensitivity Beam Loss Monitors observe deflected beams. scans allowed exploring particle interactions with...