优化耦合到发光测辐射热计的光探测器的能量阈值
Optimizing the energy threshold of light detectors coupled to luminescent bolometers
摘要：
辐射热计已被证明是寻找无中微子双β衰变的良好探测器。通过在低温下工作，它们具有出色的能量分辨率和低背景。探测辐射热计中粒子相互作用时可能发射的光是一种很有前途的降低实验背景的方法。在β/γ和α相互作用中发射的不同光量，无论是由于闪烁还是切伦科夫发射，都允许区分两种相互作用类型。由于低温环境，光探测器通常是测辐射热计。在这项工作中，我们提出了一种软件算法，以降低能量阈值的辐射热光探测器耦合到发光辐射热计。从Ge光探测器耦合到ZnMoO 4和TeO 2测辐射热计的数据的应用表明，能量阈值可以大大降低，当发射的光的量很小时，增加了辨别力。
英文摘要：
Bolometers have proven to be good detectors for the search of neutrinoless double beta decay. By operating at cryogenic temperatures, they feature excellent energy resolution and low background. The detection of the possible light emitted when particles interact in the bolometer is a promising method to lower the background of the experiments. The different amount of light emitted in beta/gamma and alpha interactions, whether due to scintillation or Cerenkov emission, allows to discriminate the two interaction types. Because of the cryogenic environment, light detectors are often bolometers. In this work we present a software algorithm to lower the energy threshold of bolometric light detectors coupled to luminescent bolometers. The application to data from Ge light detectors coupled to ZnMoO4 and TeO2 bolometers shows that the energy threshold can be lowered substantially, increasing the discrimination power when the amount of emitted light is small.
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