Phonon-Mediated KIDs as Light Detectors for Rare-Event Search: The CALDER Project
Phonon-Mediated KIDs as Light Detectors for Rare-Event Search: The CALDER Project
复制标题
声子介导的 KID 作为稀有事件搜索的光探测器：CALDER 项目
DOI：
10.1007/s10909-016-1574-0
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发表时间：
2016
影响因子：
2
通讯作者：
M. Vignati
中科院分区：
文献类型：
--
作者：
A. Cruciani;F. Bellini;L. Cardani;N. Casali;M. Castellano;I. Colantoni;A. Coppolecchia;C. Cosmelli;A. D’Addabbo;S. Di Domizio;M. Martinez;C. Tomei;M. Vignati
背景抑制在寻找罕见事件的实验中起着至关重要的作用，比如无中微子双β衰变（0 $$\nu $$ νDBD）和暗物质。大质量辐射热计是该领域最具竞争力的设备之一，它将在很大程度上受益于超灵敏光探测器的发展，因为辐射热计和光信号的联合读出使粒子识别成为可能。CALDER合作正在开发低温光探测器，以满足下一代实验的要求：噪音低于20 eV RMS，活动面积大（几厘米$$^{2}$$ 2），工作温度范围宽，易于制造和操作上千个探测器。为此，我们正在利用动态电感探测器（KIDs）提供的优异的能量分辨率和自然多路读出。这些器件可以在声子介导的方法中工作，其中KIDs耦合到一个大的绝缘衬底上，以便将有效表面从几毫米$$^{2}$$ 2增加到25厘米$$^{2}$$ 2。我们目前最好的原型，基于铝制LEKIDs，达到了80 eV的基准灵敏度，整体效率约为20%.
Background suppression plays a crucial role in experiments searching for rare events, like neutrino-less double beta decay (0$$\nu $$νDBD) and dark matter. Large mass bolometers that are among the most competitive devices in this field would largely benefit from the development of ultrasensitive light detectors, as the combined readout of the bolometric and light signals enables the particle identification. The CALDER collaboration is developing cryogenic light detectors that will match the requirements of next generation experiments: noise lower than 20 eV RMS, large active area (several cm$$^{2}$$2), wide temperature range of operation, and ease in fabricating and operating a thousand of detectors. For this purpose, we are exploiting the excellent energy resolution and the natural multiplexed read-out provided by kinetic inductance detectors (KIDs). These devices can be operated in a phonon-mediated approach, in which KIDs are coupled to a large insulating substrate in order to increase the active surface from a few mm$$^{2}$$2 to 25 cm$$^{2}$$2. Our current best prototype, based on aluminum LEKIDs, reached a baseline sensitivity of 80 eV with an overall efficiency of about 20 %.