Al/Ti/Al声子介导的KID用于大面积UV-VIS光探测
Al/Ti/Al phonon-mediated KIDs for UV-VIS light detection over large areas
摘要：
开发基线能量分辨率低于20 eV RMS的广域低温光探测器对于寻找稀有相互作用的下一代测辐射热实验至关重要。事实上，光和热信号的同时读出将通过粒子识别实现背景抑制。由于其优异的固有能量分辨率，以及其良好的再现性，动力学电感探测器（KID）是下一代光探测器发展的良好候选者。CALDER项目正在研究声子介导的KID的潜力。该项目的第一阶段允许使用在2x2 cm \tmrsup{$2$}硅衬底上由铝制成的单个KID达到80 eV的基线分辨率作为光子吸收体。在本文中，我们提出了一种新的原型探测器实现三层铝钛铝KID。利用超导邻近效应，基线分辨率提高到26 eV。
英文摘要：
The development of wide-area cryogenic light detectors with baseline energy resolution lower than 20 eV RMS is essential for next generation bolometric experiments searching for rare interactions. Indeed the simultaneous readout of the light and heat signals will enable background suppression through particle identification. Because of their excellent intrinsic energy resolution, as well as their well-established reproducibility, Kinetic Inductance Detectors (KIDs) are good candidates for the development of next generation light detectors. The CALDER project is investigating the potential of phonon-mediated KIDs. The first phase of the project allowed to reach a baseline resolution of 80 eV using a single KID made of aluminium on a 2x2 cm\tmrsup{$2$} silicon substrate acting as photon absorber. In this paper we present a new prototype detector implementing a trilayer aluminium-titanium-aluminium KID. Taking advantage of the superconducting proximity effect the baseline resolution improves down to 26 eV.
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