用于SiPM传感器同时双读出的前端放大器
Front End Amplifiers for Simultaneous Dual Readout of SiPM Sensors
AI总结：
研究针对SiPM传感器同时双读出的前端放大器设计，给出标准与快速输出AFE的参数，利用其进行双读出可抑制相关噪声等，减少暗条件下非即时相关噪声，提升单光子鉴别能力，为去除电荷测量污染提供实用方法。
AI中文摘要：
在本工作中，我们展示了两种全开放式模拟前端（AFE）设计，用于同时读出安森美MicroFC - 10035硅光电倍增管的标准输出和快速输出，并报告其主要品质因数参数。标准输出AFE的1个光电子幅度为(394 ± 1) mV，信噪比为30 dB。快速AFE的上升时间为(1.3 ± 0.1) ns，中值电子抖动为34⁺⁷₋₅ ps，具有出色的定时性能。利用这些放大器进行同时双读出，我们展示了一个概念验证应用，其中快速输出定时信息用于抑制标准输出电荷测量中存在的相关噪声事件或堆积事件。这种抑制在暗条件下减少了非即时相关噪声（延迟串扰和后脉冲），并且在连续入射光子率为7.8 MHz/mm²时，单光子鉴别能力提高了约14倍。这些结果表明，双SiPM读出提供了一种在逐个事件基础上去除标准输出电荷测量中相关噪声或堆积污染的实用方法。
英文摘要：
In this work, we present two fully open Analog Front End (AFE) designs for the simultaneous readout of the standard and fast outputs of ONSemi MicroFC-10035 Silicon Photomultipliers and report their main figure-of-merit parameters. The standard output AFE has a 1 p.e. amplitude of $(394 \pm 1)$ mV, which results in a Signal-to-Noise ratio of 30 dB. In addition, the fast AFE has a rise time of $(1.3\pm 0.1)$ ns and a median electronic jitter of $34^{+7}_{-5}$ ps, resulting in an excellent timing performance. Using these amplifiers for simultaneous dual readout, we demonstrate a proof-of-concept application, in which fast output timing information is used to suppress correlated noise events or pileup events present in the standard output charge measurements. This suppression results in a reduction of non-prompt correlated noise (delayed crosstalks and afterpulses) in dark conditions and an increase up to $\sim$14 in single photon discrimination under a continuous incident photon rate of 7.8 MHz/mm$^2$. These results show that dual SiPM readout provides a practical way to remove correlated noise or pileup contamination in standard output charge measurements on an event-by-event basis.
