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 μV peak-to-peak.
@article{arxiv.2211.03069,
title = {The Front-End electronics for the liquid Argon instrumentation of the LEGEND-200 experiment},
author = {I. Abritta Costa and A. Budano and N. Burlac and F. Paissan and G. Salamanna and D. Tagnani},
journal= {arXiv preprint arXiv:2211.03069},
year = {2023}
}