EDELWEISS-II Dark Matter Search : status and first results

被引：4

作者：

Sanglard, Veronique ^{[1
]}

机构：

[1] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France

来源：

TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS (TAUP2009) | 2010年 / 203卷

关键词：

CRYOGENIC GE DETECTORS; DESIGN;

D O I：

10.1088/1742-6596/203/1/012037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The EDELWEISS II experiment is devoted to the search for Weakly Interacting Massive Particles (WIMP) that would constitute the Dark Matter halo of our Galaxy. For this purpose, the experiment uses cryogenic germanium detectors, cooled down at 20 mK, in which the collision of a WIMP with an atomic nucleus produces characteristic signals in terms of ionization and elevation of temperature. We will present the preliminary results of the first operation of the detectors installed in the underground laboratory of the Frejus Tunnel (LSM), attesting to the very low radioactive background conditions achieved so far. New detectors, with a special electrode design for active rejection of surface events, have been shown to be suited for searches of WIMPs with scattering cross-sections on nucleon well below 10(-8) pb. Preliminary results of WIMP search performed with a first set of these detectors are presented.

引用

页数：4

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