LEGEND-200 实验中液氩仪器的前端电子学
The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment
AI总结：
本文介绍 LEGEND-200 实验液氩仪器的前端电子学设计，为满足放射性纯度要求而远距离放置，实现 250 μV 峰峰值低噪声，支持单光子分辨读出。
摘要：
本文详细描述了 LEGEND-200 实验中用于液氩仪器的前端（FE）电子学的技术细节，该实验在意大利格兰萨索国家实验室（Laboratori Nazionali del Gran Sasso）寻找极其罕见、假设性的无中微子双β衰变过程。该设计源于需要以优异的单光子分辨率读出硅光电倍增管对液氩中闪烁光的响应。为满足实验的放射性纯度约束，前端电子学必须放置在远离探测器的地方。这一约束对实现高信噪比构成了挑战。我们阐述了如何以稳定方式实现这一目标。该系统于 2021 年 7 月安装，并已与 LEGEND-200 的其余部分完成调试，证明我们能够达到 250 μV 峰峰值极低的整体电噪声水平。
英文摘要：
In this paper we provide a detailed technical description of the Front-End (FE) electronics for the liquid Argon instrumentation of the LEGEND-200 experiment, searching for the very rare, hypothetical neutrinoless double $β$ decay process at the Italian Laboratori Nazionali del Gran Sasso. The design stems from the need to read out the silicon photo-multiplier response to the scintillation light in the liquid Argon with excellent single-photon resolution. The FE electronics is required to be placed far from the detectors to meet the experiment's radio-purity constraints. This constraint represents a challenge for a high signal-to-noise ratio. We address how this could be achieved in a stable way. The system was installed in July 2021 and has been commissioned with the rest of LEGEND-200, proving we could attain a very low overall level of electrical noise of 250 $μ$V peak-to-peak.
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