Alternative Scintillating Materials for the CRESST Dark Matter Search
Alternative Scintillating Materials for the CRESST Dark Matter Search
复制标题
用于 CRESST 暗物质搜索的替代闪烁材料
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
R. Kleindienst
中科院分区：
文献类型：
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作者：
K. Schäffner;F. Pröbst;W. Seidel;F. Petricca;D. Hauff;R. Kleindienst
CRESST暗物质搜索的目的是通过暗物质粒子在闪烁的目标晶体中的原子核的弹性散射来检测暗物质粒子。声子和光信号的同时测量允许从预期的核反冲信号有效地区分主导β和γ背景。对于给定的光检测器和反射器，晶体的闪烁效率决定了有源背景鉴别仍然有效的最低能量。因此，具有较高光输出的晶体可以提高实验的整体灵敏度。在这种情况下，测量碘化铯（未掺杂）和CdWO4晶体在毫开尔文温度下的光产额。此外，我们报告的第一个结果，这些晶体在传统的CRESST配置的测量。
The CRESST Dark Matter Search aims to detect Dark Matter particles via their elastic scattering off nuclei in scintillating target crystals. A simultaneous measurement of a phonon and light signal allows to efficiently discriminate the dominant beta and gamma background from expected nuclear recoil signals. For a given light detector and reflector, it is the scintillation efficiency of the crystal which determines the lowest energy for which the active background discrimination is still efficient. Crystals with a higher light output therefore can improve the overall sensitivity of the experiment. In this context, measurements of the light yield of CsI (undoped) and CdWO4 crystals at milli-Kelvin temperature are presented. Furthermore we report on first results of measurements of these crystals in conventional CRESST configuration.