A5105652706- 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
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Cosmology and Gravitation Theories
- CCD and CMOS Imaging Sensors
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Black Holes and Theoretical Physics
- Nuclear physics research studies
- Advanced Data Storage Technologies
- Radiation Effects in Electronics
- Superconducting Materials and Applications
- Advancements in Semiconductor Devices and Circuit Design
- Astrophysics and Cosmic Phenomena
- Particle accelerators and beam dynamics
- Muon and positron interactions and applications
- Quantum chaos and dynamical systems
- Stochastic processes and statistical mechanics
Université Paris Cité
2016-2025
Centre National de la Recherche Scientifique
2016-2025
Sorbonne Paris Cité
2019-2025
Laboratoire AstroParticule et Cosmologie
2022-2025
Institut National de Physique Nucléaire et de Physique des Particules
2013-2025
Laboratoire de Physique Nucléaire et de Hautes Énergies
2015-2024
Sorbonne Université
2015-2024
Northern Illinois University
2023-2024
A. Alikhanyan National Laboratory
2024
The University of Adelaide
2017-2023
Radiation damage significantly impacts the performance of silicon tracking detectors in Large Hadron Collider (LHC) experiments such as ATLAS and CMS, with signal reduction being most critical effect. Adjusting sensor bias voltage detection thresholds can help mitigate these effects, but generating simulated data that accurately mirror evolution accumulation luminosity, hence fluence, is crucial. The collaboration has developed implemented algorithms to correct Monte Carlo (MC) events for...
The Xenon-Argon Technology (X-ArT) Collaboration presents a study on the dynamics of pure and xenon-doped liquid argon (LAr) scintillation. Using two types silicon photomultipliers sensitive to different wavelength ranges, we provide evidence in favor contribution from long-lived (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:mo>></a:mo><a:mrow><a:mn>10</a:mn><a:mtext> </a:mtext><a:mtext> </a:mtext><a:mi mathvariant="normal">μ</a:mi><a:mi...
We report measurements of $\sin{2\beta}$ and $\cos{2\beta}$ from a time-dependent Dalitz plot analysis $B^{0} \to D^{(*)} h^{0}$ with $D K_{S}^{0} \pi^{+} \pi^{-}$ decays, where the light unflavored neutral hadron $h^{0}$ is $\pi^{0}$, $\eta$, or $\omega$ meson. The performed combination final data sets \babar\ Belle experiments containing $471 \times 10^{6}$ $772 $B\bar{B}$ pairs collected at $\Upsilon\left(4S\right)$ resonance asymmetric-energy B factories PEP-II SLAC KEKB KEK,...
Results of beam tests with planar silicon pixel sensors aimed towards the ATLAS Insertable B-Layer and High Luminosity LHC (HL-LHC) upgrades are presented. Measurements include spatial resolution, charge collection performance sharing between neighbouring cells as a function track incidence angle for different bulk materials. n-in-n presented fluence irradiations. Furthermore p-type from several vendors slightly differing layouts were tested. All tested connected by bump-bonding to Pixel...
This paper is a review of recent progress RD53 Collaboration. Results obtained on the study radiation effects 65 nm CMOS have matured enough to define first strategies adopt in design analog and digital circuits. Critical building blocks very front end chains been designed, tested before after 5–800 Mrad. Small prototypes 64×64 pixels with complex architectures produced, point address main issues dealing extremely high pixel rates, while operating at small in-time thresholds end. The...
We report on further developments of our recently proposed design approach for a full in-pixel signal processing chain deep n-well (DNW) MAPS sensors, by exploiting the triple well option CMOS 0.13 μm process. The optimization collecting electrode geometry and re-design analog circuit to decrease power consumption have been implemented in two versions APSEL chip series, namely "APSEL3T1" "APSEL3T2". results characterization 3x3 pixel matrices with output photons from <sup...
We report a measurement of the time-dependent CP asymmetry B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where light neutral hadron h^{0} is π^{0}, η, or ω meson, and D meson reconstructed in eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, K_{S}^{0}ω. The performed combining final data samples collected at ϒ(4S) resonance by BABAR Belle experiments asymmetric-energy B factories PEP-II SLAC KEKB KEK, respectively. contain (471±3)×10^{6} BB[over ¯] pairs recorded detector (772±11)×10^{6} detector. measure...
Whilst the thermal management needs of future silicon detectors are increasing, required mass and volume minimization all detector ancillaries gets more demanding. This requires highly effective active cooling in very small channels. In context AIDA-2020 project, a new test stand has been developed to characterize, with unprecedented level accuracy, boiling flows CO2 mini- micro-channels hydraulic diameter ranging from 2 down 0.1 mm. The heat transfer coefficient pressure drop behaviour...
We present first evidence that the cosine of CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis B0→D(*)h0 with D→K0Sπ+π− decays, where h0∈{π0,η,ω} denotes light unflavored neutral hadron. The measurement performed combining final data sets BABAR Belle experiments collected at Υ(4S) resonance asymmetric-energy B factories PEP-II SLAC KEKB KEK, respectively....
The very high fluences (e.g. up to 2×1016 1 MeV neq/cm2) and total ionising doses (TID) of the order Grad, expected at High Luminosity LHC (HL-LHC), impose new challenges for design effective, radiation resistant detectors. Ionising energy loss is dominant effect what concerns SiO2 SiO2/Si interface damage. In particular, surface damage can create a positive charge layer near traps along interface, which strongly influence breakdown voltage, inter-electrode isolation capacitance, might also...
Signal reduction is the most important radiation damage effect on performance of silicon tracking detectors in ATLAS. Adjusting sensor bias voltage and detection threshold can help mitigating effects but it to have simulated data that reproduce evolution with accumulation luminosity, hence fluence. ATLAS collaboration developed implemented an algorithm reproduces signal loss changes Lorentz angle due damage. This now default for Run3 events. In this paper will be briefly presented results...
We report a measurement of the time-dependent CP asymmetry B0->D(*)CP h0 decays, where light neutral hadron is pi0, eta or omega meson, and D meson reconstructed in eigenstates K+ K-, K0S pi0 omega. The performed combining final data samples collected at Y(4S) resonance by BaBar Belle experiments asymmetric-energy B factories PEP-II SLAC KEKB KEK, respectively. contain ( 471 +/- 3 ) x 10^6 BB pairs recorded detector 772 11 10^6, detector. measure parameters -eta_f S = +0.66 0.10 (stat.) 0.06...
Various structures for n-in-p planar pixel sensors have been developed at KEK in order to cope with the huge particle fluence upcoming LHC upgrades. Performances of different evaluated testbeam. The devices were connected by bump-bonding ATLAS Pixel front-end chip (FE-I4A) and characterized before after irradiation 1×1016 1 MeV neq/cm2. Results measurements 120 GeV/c momentum pion beam CERN Super Proton Synchrotron (SPS) September 2012 are presented.
The Phase 2 upgrades of silicon pixel detectors at HL-LHC experiments feature extreme require- ments, such as: 50x50 μm pixels, high rate (3 GHz/cm2), unprecedented radiation levels (1 Grad), readout speed and serial powering. As a consequence new chip is required. In this framework the RD53 collaboration submitted RD53A, large scale demonstrator de- signed in 65 nm CMOS technology, integrating matrix 400×192 pixels. It features design variations analog digital for testing purposes. An...
The foreseen luminosity upgrade for the LHC (a factor of 5-10 more in peak by 2021) poses serious constraints on technology ATLAS tracker this High Luminosity era (HL-LHC). In fact, such increase leads to increased occupancy and radiation damage tracking detectors. To investigate suitability pixel sensors using proven planar upgraded tracker, Planar Pixel Sensor R&D Project was established comprising 17 institutes than 80 scientists. Main areas research are performance at highest fluences,...