Optimization of capacitively coupled Low Gain Avalanche Diode (AC-LGAD) sensors for precise time and spatial resolution
Optimization of capacitively coupled Low Gain Avalanche Diode (AC-LGAD) sensors for precise time and spatial resolution
复制标题
优化电容耦合低增益雪崩二极管 (AC-LGAD) 传感器以实现精确的时间和空间分辨率
DOI：
10.1016/j.nima.2022.168009
复制
发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Hara Kazuhiko
中科院分区：
文献类型：
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作者：
Kita Sayuka;Nakamura Koji;Ueda Tatsuki;Goya Ikumi;Hara Kazuhiko
摘要电容耦合低增益雪崩二极管（AC-LGAD）传感器作为一种探测器，可以提供高空间分辨率的快速时间信息，正在被开发用于高能粒子物理实验。本文介绍了AC-LGAD传感器的制作参数的优化，如增益和电极层的掺杂浓度以及AC绝缘体电容，以实现O（10）μ m的空间分辨率，小的电荷串扰到相邻电极，检测效率高于99%，在10 - 4的噪声率和时间分辨率约为30 ps。给出了该传感器的抗辐射能力。此外，进一步的应用，能够可见光和红外光检测的设备进行了讨论。
Abstract Capacitively-coupled Low-Gain Avalanche Diode (AC-LGAD) sensors are being developed for high-energy particle physics experiments as a detector which provides fast time information with fine spatial resolution. This paper describes optimizations of AC-LGAD sensor fabrication parameters, such as doping concentrations of the gain and electrode layers as well as the AC insulator capacitance, to realize O (10) μ m spatial resolution, small charge cross talk to the neighboring electrodes, detection efficiency higher than 99% at a 10− 4 noise rate and time resolution of about 30 ps. The radiation tolerance of the sensor is presented. In addition, further application to a device capable of visible and infra-red light detection is discussed.