B. Censier
A5014520075- Dark Matter and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Radio Astronomy Observations and Technology
- Antenna Design and Optimization
- Superconducting and THz Device Technology
- Radioactive Decay and Measurement Techniques
- Neutrino Physics Research
- Nuclear Physics and Applications
- Radio Wave Propagation Studies
- Astrophysics and Cosmic Phenomena
- Scientific Research and Discoveries
- Cosmology and Gravitation Theories
- Scientific Measurement and Uncertainty Evaluation
- Nuclear physics research studies
- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- Atomic and Molecular Physics
- Neural Networks and Applications
- Cultural Insights and Digital Impacts
- Ion-surface interactions and analysis
- CCD and CMOS Imaging Sensors
- Structural Analysis and Optimization
- Advanced Thermodynamics and Statistical Mechanics
Observatoire Radioastronomique de Nançay
2015-2024
Observatoire de Paris
2016-2021
Centre National de la Recherche Scientifique
2003-2020
Institute of Nuclear Physics of Lyon
2012-2019
Université Claude Bernard Lyon 1
2011-2013
Institut National de Physique Nucléaire et de Physique des Particules
2003-2012
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2008-2011
Laboratoire National Henri Becquerel
2008-2011
CEA LIST
2008-2011
CEA Paris-Saclay
2008-2009
The EDELWEISS-II Collaboration has completed a direct search for WIMP dark matter with an array of ten 400-g cryogenic germanium detectors in operation at the Laboratoire Souterrain de Modane. combined use thermal phonon sensors and charge collection electrodes interleaved geometry enables efficient rejection γ-induced radioactivity as well near-surface interactions. A total effective exposure 384 kg d been achieved, mostly coming from fourteen months continuous operation. Five nuclear...
The final results of the EDELWEISS-I dark matter search using cryogenic heat-and-ionization Ge detectors are presented. data sample corresponds to an increase by a factor 5 in exposure relative previously published results. A recoil energy threshold 13 keV or better was achieved with three 320 g working simultaneously over four months stable operation. Limits on spin-independent cross section for scattering weakly interacting massive particle nucleon derived from accumulated fiducial...
We report on a search for low-energy (E < 20 keV) WIMP-induced nuclear recoils using data collected in 2009 - 2010 by EDELWEISS from four germanium detectors equipped with thermal sensors and an electrode design (ID) which allows to efficiently reject several sources of background. The indicate no evidence exponential distribution that could be attributed WIMP elastic scattering after exposure 113 kg.d. For WIMPs mass 10 GeV, the observation one event region results 90% CL limit 1.0x10^-5 pb...
The CDMS and EDELWEISS collaborations have combined the results of their direct searches for dark matter using cryogenic germanium detectors. total data set represents 614 kg.d equivalent exposure. A straightforward method combination was chosen its simplicity before were exchanged between experiments. are interpreted in terms limits on spin-independent WIMP-nucleon cross-section. For a WIMP mass 90 GeV/c^2, where this analysis is most sensitive, cross-section 3.3 x 10^{-44} cm^2 excluded at...
The EDELWEISS Collaboration is searching for WIMP dark matter using natural Ge cryogenic detectors. whole data set of the first phase experiment contains a fiducial exposure 4.8 kg day on 73Ge, naturally present (7.8%), high-spin isotope. sensitivity to spin-dependent WIMP-nucleon interactions evaluated model-independent framework proposed by Tovey et al. [Phys. Lett. B 488 (2000) 17]. It shown that WIMP-neutron coupling competitive when compared with results other spin-sensitive...
NenuFAR (New extension in Nançay upgrading LOFAR), is a low-frequency SKA pathfinder presently construction and commissioning (France) [1], [2]. consists of 102 mini-arrays (MA) 19 dual polarization antennas each. 96 MA cover densely disk (core) 400m diameter, 6 are located at distances up to ~3 km. will the range 10-85 MHz, that encompasses LOFAR ([3] 0-80 MHz nominal, can be extended MHz), three instruments one: (i)the core, connected receivers French (FR606) station, form giant station...
EMBRACE@Nancay is a prototype instrument consisting of an array 4608 densely packed antenna elements creating fully sampled, unblocked aperture. This technology proposed for the Square Kilometre Array and has potential providing extremely large field view making it ideal survey instrument. We describe system,calibration procedures, results from prototype.
An overview of non-directional direct detection methods is given. The currently leading experiments for spin independent WIMPs interactions are using simultaneous measurement two quantities event-by-event background discrimination in cryogenic bolometers and noble gas like xenon. Besides these, several interesting techniques have been developped, each having a specific advantage concerning e.g. energy threshold lowering or strong immunity to ionizing radiations background. Technologies used...
A revolution in radio receiving technology is underway with the development of densely packed phased arrays for astronomy. This can provide an exceptionally large field view, while at same time sampling sky high angular resolution. Such instrument, a view over 100 square degrees, ideal performing fast, all-sky, surveys, such as ``intensity mapping'' experiment to measure signature Baryonic Acoustic Oscillations HI mass distribution cosmological redshifts. The SKA, built this technology, will...
We are developing metallic magnetic calorimeters for beta spectrometry in the context of ionizing radiation metrology. The aim is determination shape factors spectra. Our latest detector has been designed to measure spectrum 241Pu, a pure emitter with an endpoint energy 20.8 keV. present resulting from our first measurement and compare it theoretical