A BGO scintillating bolometer as dark matter detector prototype

被引：22
|
作者：
Coron, N. [2 ,3 ]
Garcia, E. [1 ]
Gironnet, J. [2 ,3 ]
Leblanc, J. [2 ,3 ]
de Marcillac, P. [2 ,3 ]
Martinez, M. [1 ]
Ortigoza, Y. [1 ]
Ortiz de Solorzano, A. [1 ]
Pobes, C. [1 ]
Puimedon, J. [1 ]
Redon, T. [2 ,3 ]
Sarsa, M. L. [1 ]
Torres, L. [1 ]
Villar, J. A. [1 ]
机构：
[1] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain
[2] CNRS, Inst Astrophys Spatiale, F-91405 Orsay, France
[3] Univ Paris 11, F-91405 Orsay, France
来源：
OPTICAL MATERIALS | 2009年 / 31卷 / 10期
关键词：
Scintillating bolometers; Light yield; Particle discrimination; Dark matter; WIMPs; PERFORMANCE; LIMITS;
D O I：
10.1016/j.optmat.2008.09.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 46 g BGO (Bi4Ge3O12) scintillating bolometer has been tested at 20 mK as a prototype for dark matter direct detection in the frame of the ROSEBUD (Rare Objects SEarch with Bolometers UndergrounD) collaboration. The bolometer has been operated first in Orsay and then in an ultra-low background environment at the Canfranc Underground Laboratory. We analyze its response both in heat and light, and its particle discrimination capability. Light yield under gamma-ray excitation at several energies (from 88.0 to 1633.3 keV) and the relative light output for different particles (beta/gamma, alpha and neutrons) have been estimated. The analysis focuses on the discrimination of nuclear recoils, like those produced by hypothetical weakly interacting massive particles (WIMPs), against electron recoils, produced by beta/gamma radioactive background. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1393 / 1397
页数：5
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