论文标题
具有不同n+剂量的大型AC-LGAD的性能
The performance of large-pitch AC-LGAD with different N+ dose
论文作者
论文摘要
AC耦合LGAD（AC-LGAD）是基于低增益雪崩二极管（LGAD）技术开发的新的4D检测器，它可以准确地测量粒子的时间和空间信息。高能物理学研究所（IHEP）设计了一个大尺寸的AC-LGAD，其音高为2000〜 \ Si {} {\ micro \ meter \ meter}和1000〜 \ si {} {\ si {} {\ micro \ metro \米的AC PAD，并探索了N+层剂量对空间解决方案的效果。空间分辨率从36〜 \ si {} {\ micro \ meter}到16〜 \ si {} {\ micro \ meter}，具体取决于n+剂量的n+剂量，对应于大约12个最小电离粒子。时间分辨率的抖动成分不会因不同的n+剂量而显着变化，并且大约是通过激光测量的15-17 ps。低N+剂量的AC-LGAD在垫之间的中央区域中具有较大的衰减因子和更好的空间分辨率。在这些特定条件下，较大的信号衰减因子和低噪声水平有益于改善AC-LGAD传感器的空间分辨率。
AC-Coupled LGAD (AC-LGAD) is a new 4D detector developed based on the Low Gain Avalanche Diode (LGAD) technology, which can accurately measure the time and spatial information of particles. The Institute of High Energy Physics (IHEP) designed a large-size AC-LGAD with a pitch of 2000~\SI{}{\micro\metre} and AC pad of 1000~\SI{}{\micro\metre}, and explored the effect of N+ layer dose on the spatial resolution and time resolution. The spatial resolution varied from 36~\SI{}{\micro\metre} to 16~\SI{}{\micro\metre} depending on N+ dose for a charge corresponding to about 12 minimum ionizing particles. The jitter component of the time resolution does not change significantly with different N+ doses, and it is about 15-17 ps measured by laser. The AC-LGAD with a low N+ dose has a large attenuation factor and better spatial resolution in the central region between pads. In these specific conditions, large signal attenuation factor and low noise level are beneficial to improve the spatial resolution of the AC-LGAD sensor.
