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Your search keyword '"Muraz, J-F"' showing total 3 results
Start Over Author "Muraz, J-F" Publisher escholarship, university of california
3 results on '"Muraz, J-F"'

1. MIMAC low energy electron-recoil discrimination measured with fast neutrons

Author

Riffard, Q, Santos, D, Guillaudin, O, Bosson, G, Bourrion, O, Bouvier, J, Descombes, T, Muraz, J-F, Lebreton, L, Maire, D, Colas, P, Giomataris, I, Busto, J, Fouchez, D, Brunner, J, and Tao, C

Subjects
Affordable and Clean Energy, Dark Matter detectors, Particle identification methods, Time projection chambers, astro-ph.IM, physics.ins-det, Physical Sciences, Engineering, Nuclear & Particles Physics
Abstract

MIMAC (MIcro-TPC MAtrix of Chambers) is a directional WIMP Dark Matter detector project. Direct dark matter experiments need a high level of electron/recoil discrimination to search for nuclear recoils produced by WIMP-nucleus elastic scattering. In this paper, we proposed an original method for electron event rejection based on a multivariate analysis applied to experimental data acquired using monochromatic neutron fields. This analysis shows that a 105 rejection power is reachable for electron/recoil discrimination. Moreover, the efficiency was estimated by a Monte-Carlo simulation showing that a 105 electron rejection power is reached with a 86.49 ± 0.17% nuclear recoil efficiency considering the full energy range and 94.67 ± 0.19% considering a 5 keV lower threshold.

Published
2016

2. First detection of tracks of radon progeny recoils by MIMAC

Author

Riffard, Q, Santos, D, Bosson, G, Bourrion, O, Descombes, T, Fourel, C, Guillaudin, O, Muraz, J-F, Colas, P, Ferrer-Ribas, E, Giomataris, I, Busto, J, Fouchez, D, Tao, C, Lebreton, L, and Maire, D

Subjects
astro-ph.IM, nucl-ex, physics.ins-det
Abstract

The MIMAC experiment is a $\mu$-TPC matrix project for directional darkmatter search. Directional detection is a strategy based on the measurement ofthe WIMP flux anisotropy due to the solar system motion with respect to thedark matter halo. The main purpose of MIMAC project is the measurement of theenergy and the direction of nuclear recoils in 3D produced by elasticscattering of WIMPs. Since June 2012 a bi-chamber prototype is operating at theModane underground laboratory. In this paper, we report the first ionizationenergy and 3D track observations of nuclear recoils produced by the radonprogeny. This measurement shows the capability of the MIMAC detector and opensthe possibility to explore the low energy recoil directionality signature.

Published
2015

3. Dark matter directional detection with MIMAC

Author

Lamblin, J., Bosson, G., Brunner, J., Fouchez, D., Lebreton, L., Maire, D., Bourrion, O., Guillaudin, O., Mayet, F., Muraz, J.-F., Richer, J.-P., Riffard, Q., Santos, D., and Busto, J.

Subjects
Physics::Instrumentation and Detectors, Hypothetisches Teilchen, astro-ph.CO, physics.ins-det, astro-ph.IM
Abstract

Lamblin, J. "Dark matter directional detection with MIMAC" in Proceedings, 9th Patras Workshop on Axions, WIMPs and WISPs (AXION-WIMP 2013) / Oberlack, Uwe, Sissol, Pierre (eds.), 2013 ; AXION-WIMP 2013 : 9th Patras Workshop on Axions, WIMPs and WISPs , 2013-06-23 - 2013-06-28, Mainz 9th Patras Workshop on Axions, WIMPs and WISPs, AXION-WIMP 2013, Mainz, Germany, 24 Jun 2013 - 28 Jun 2013; Hamburg : Verlag Deutsches Elektronen-Synchrotron, DESY-PROC 211-214 (2013). doi:10.3204/DESY-PROC-2013-04/lamblin_jacob, The MIMAC project aims at the directional detection of dark matter using a gaseous Time Projection Chamber (TPC) which enables the measurement of the energy and the track of low energy nuclear recoils. A 5-liter prototype has been developed and operated during several months. In this paper, after a description of the detector and the calibration procedure, we report the first results of the background studies., Published by Verlag Deutsches Elektronen-Synchrotron, Hamburg

Published
2020
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