Status of the EDELWEISS experiment

被引:9
|
作者
Drain, D
Benoit, A
Bergé, L
Berkes, I
Chambon, B
Chapellier, M
Chardin, G
Charvin, P
De Jésus, M
Di Stefano, P
Dumoulin, L
Goldbach, C
Hadjout, JP
Juilliard, A
L'Hôte, D
Mallet, J
Marnieros, S
Miramonti, L
Mosca, L
Navick, XF
Nollez, G
Pari, P
Pastor, C
Pécourt, S
Simon, E
Turbot, R
Vagneron, L
Yvon, D
机构
[1] Inst Phys Nucl, F-69622 Villeurbanne, France
[2] Univ Lyon 1, CNRS, IN2P3, F-69622 Villeurbanne, France
[3] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France
[4] Univ Paris 11, CNRS, IN2P3, Ctr Spect Nucl Masse, F-91405 Orsay, France
[5] CEA, Ctr Etud Saclay, DSM, DRECAM,Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France
[6] CEA, Ctr Etud Saclay, DSM, DAPNIA,Serv Phys Particules, F-91191 Gif Sur Yvette, France
[7] CEA, CNRS, Lab Souterrain Modane, F-73500 Modane, France
[8] Inst Astrophys, INSU, CNRS, F-75014 Paris, France
来源
关键词
D O I
10.1016/S0370-1573(98)00075-1
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The status of the EDELWEISS experiment, installed in the Frejus tunnel, is presented. In its first stage, the experiment uses a 70 g high purity Ge bolometer with heat-ionization discrimination. Based on physics data, gamma and neutron calibrations, the influence of inverse bias voltage (-2 and -6 V) on incomplete surface charge collection, which limits at present the performances of these detectors, is presented. Analysing runs with a total exposure of 1.17 kg x day after cuts, an upper limit of 0.6 event/day kg keV at 90% confidence level in the 12-70 keV recoil energy interval is obtained. Planned upgrades are summarized. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:297 / 300
页数:4
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