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Development of Ge/NbSi detectors for EDELWEISS-II with identification of near-surface events

Abstract : The actual limitation of Ge ionization heat cryogenic detectors for direct WIMP detection such as EDELWEISS arises from incomplete charge collection for near-surface events. We present results on Ge/NbSi detectors that are fitted with segmented electrodes and two NbSi Anderson insulator thermometric layers. Three such bolometers were studied in the low-background cryostat of the EDELWEISS collaboration in the LSM: analysis of the athermal signals allows us to identify and reject events occurring in the first millimeter under the electrodes.
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http://hal.in2p3.fr/in2p3-00026013
Contributor : Dominique Girod <>
Submitted on : Thursday, May 4, 2006 - 4:02:38 PM
Last modification on : Wednesday, September 16, 2020 - 4:17:40 PM

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A. Juillard, S. Marnieros, Y. Dolgorouky, L. Bergé, S. Collin, et al.. Development of Ge/NbSi detectors for EDELWEISS-II with identification of near-surface events. 11th International Workshop on Low Temperature Detectors - LTD-11, Jul 2005, Tokyo, Japan. pp.393-395, ⟨10.1016/j.nima.2005.12.019⟩. ⟨in2p3-00026013⟩

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