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Title: Background investigation in EDELWEISS-III

Protection from and rejection of backgrounds is a key issue for the EDELWEISS-III direct dark matter detection experiment which aims at exploring the 10{sup −9} pb cross-section region for spin-independent WIMP-nucleon interaction. The detector is located in the low radioactivity environment of the Modane Underground Laboratory and consists of 36 advanced FID germanium detectors operating at 18 mK in a dilution refrigerator in order to identify eventual rare nuclear recoils induced by elastic scattering of WIMPs from our Galactic halo. I will discuss the background and the methods of rejecting it with the FID detectors. Detector performances and the first analysis of data acquired in a long-term campaign will be presented as well. The FID detector technology is not limited to EDELWEISS-III but can further be employed in the next generation of cryogenic detector experiments.
Authors:
 [1]
  1. Karlsruher Institut für Technologie, Institut für Experimentelle Kernphysik, Postfach 3640, Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
22488719
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1672; Journal Issue: 1; Conference: LRT 2015: 5. international workshop in low radioactivity techniques, Seattle, WA (United States), 18-20 Mar 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; DATA ANALYSIS; DILUTION; ELASTIC SCATTERING; GE SEMICONDUCTOR DETECTORS; MULTIPARTICLE SPECTROMETERS; NONLUMINOUS MATTER; NUCLEONS; PARTICLE IDENTIFICATION; PERFORMANCE; RADIOACTIVITY; RECOILS; SPIN; UNDERGROUND; WIMPS