Surface trapping and detector degradation in Ge bolometers for the EDELWEISS Dark Matter search:: experiment and simulation

被引：4

作者：

Censier, B ^{[1
]}

Broniatowski, A ^{[1
]}

Juillard, A ^{[1
]}

Bergé, L ^{[1
]}

Dumoulin, L ^{[1
]}

机构：

[1] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay 108, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 520卷 / 1-3期

关键词：

dark matter; surface trapping; germanium cryogenic detector; signal simulation;

D O I：

10.1016/j.nima.2003.11.281

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Surface charging effects are investigated in a germanium ionization-heat detector operated at cryogenic temperatures. Under properly defined biasing conditions, carriers of one type only (either electrons or holes) are driven in a controlled manner into the free surfaces of the detector where they become trapped. Computer simulations allow to determine the surface densities of trapped carriers, and to reconstruct the scatter Plot of gamma-events in the degraded state. They allow one in particular to define several event populations with respect to detector degradation, attributed to different areas of energy deposition. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：156 / 158

页数：3

共 4 条

[1]

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KINGSTON, RH .

JOURNAL OF APPLIED PHYSICS, 1956, 27 (02) :101-114

[3] Ionization measurement at very low temperature for nuclear and electron recoils discrimination by ionization-heat simultaneous measurement for dark matter research [J].

Navick, XF ;

L'Hôte, D ;

Tourbot, R .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2000, 442 (1-3) :267-274

[4]

Ramot S.R.E., 1939, Proc. IRE, V27, P584, DOI [10.1109/JRPROC.1939.228757, DOI 10.1109/JRPROC.1939.228757]

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