AI 中文总结
本研究针对将应用于EIC的HRPPD，探究其在最高1.8T磁场下的最优工作参数，证实其在±35°极倾角范围内可恢复增益与单光子探测效率。
AI 中文摘要
高速皮秒光电探测器（HRPPD）是最先进的微通道板（MCP）光电探测器，具备优异的时间和空间分辨率，以及高单光子探测效率，目前正考虑将其应用于布鲁克海文国家实验室未来电子离子对撞机（EIC）的ePIC实验中。该技术应用的关键要求是在高达1.5T的强磁场中可靠运行，且磁力线与MCP表面法线的倾角≤15°。基于MCP的探测器中，磁场引起的收集电荷畸变可通过调整工作参数进行补偿，本研究旨在量化EIC-HRPPD（一种专为ePIC内运行设计的特殊MCP堆叠结构）的性能。该光电传感器采用高量子效率光阴极、10μm毛细管孔、窄传输间隙以及定制的陶瓷像素化直流耦合读出装置。本文探究了在均匀磁场（最高达1.8T）中，不同倾角下用于单光子探测的最优工作参数（主要是间隙和MCP上施加的电压）。最终发现，HRPPD的增益和单光子探测效率可在±35°的极倾角范围内恢复。
英文摘要
High-Rate Picosecond Photodetectors (HRPPDs) are state-of-the-art microchannel-plate (MCP) photodetectors that offer excellent timing and spatial resolution, together with high single-photon detection efficiency. They are currently being considered for the ePIC experiment at the future Electron Ion Collider (EIC) at Brookhaven National Laboratory. A key requirement for the application of this technology is reliable operation in a strong magnetic field up to 1.5 T, with magnetic flux lines at an inclination of $\le15^\circ$ to the normal of the MCP surface. Magnetic field-induced distortions of the collected charge in MCP-based detectors can be compensated by tuning the operating parameters; however, the objective of this study is to quantify this performance in the case of the EIC-HRPPD, a particular MCP stack-up specialized for operation within ePIC. This photosensor employs a high quantum efficiency photocathode, 10$~μ$m capillary pores, narrow transfer gaps, and a custom ceramic pixelated DC-coupled readout. This article explores the optimal operating parameters (mainly the voltages applied across the gaps and the MCPs) for single photon detection at various inclination angles in a uniform field up to 1.8 T. Ultimately, it was found that the gain and single photon detection efficiency of the HRRPD could be recovered over a range of polar inclination angles up to $\pm35^\circ$.
