论文标题
丘比特实验的大面积光子量热量表与IR-PT双层过渡传感器
Large area photon calorimeter with Ir-Pt bilayer transition-edge sensor for the CUPID experiment
论文作者
论文摘要
丘比特是一种下一代中性s的双β衰变实验，它将需要低温光检测器来改善背景抑制，这是通过同时读取其闪烁晶体的热和光通道。在这项工作中，我们展示了基于新型IR-PPT BILAYER过渡边缘传感器的光检测器。我们进行了一项系统的研究，以改善光子吸收器和传感器之间的热耦合，从而改善其响应性。我们的第一个设备符合丘比特的基线噪声要求<100〜ev rms。我们的探测器的会计时间为$ \ sim $ 180 $ $ s，并测量了<20 $ $ $ s的定时抖动，用于衰减的Q值的预期信号噪声，这是拒绝丘比特的标准，即拒绝了两击双杆折debeta debleta double-double-double-double-double-double-double-beta decay decay堆的堆积事件。当前的工作将为未来设备的制造提供信息，最终在最终TES设计中达到最终形式，并为丘比特提供了可扩展的读数方案。
CUPID is a next-generation neutrinoless double-beta decay experiment that will require cryogenic light detectors to improve background suppression, via the simultaneous readout of heat and light channels from its scintillating crystals. In this work we showcase light detectors based on a novel Ir-Pt bilayer transition edge sensor. We have performed a systematic study to improve the thermal coupling between the photon absorber and the sensor, and thereby its responsivity. Our first devices meet CUPID's baseline noise requirement of <100~eV rms. Our detectors have risetimes of $\sim$180 $μ$s and measured timing jitter of <20 $μ$s for the expected signal-to-noise at the Q-value of the decay, which achieves the CUPID's criterion of rejecting two-neutrino double-beta decay pileup events. The current work will inform the fabrication of future devices, culminating in the final TES design and a scaleable readout scheme for CUPID.
