SMuK 2023 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 39: Neutrinos, Dark Matter VI

T 39.3: Vortrag

Dienstag, 21. März 2023, 17:30–17:45, POT/0006

ASIC-based front-end electronics for LEGEND-1000 — •Florian Henkes, Michael Willers, and Susanne Mertens for the LEGEND collaboration — Physik-Department, E47, Technische Universität, München, Germany

The Large Enriched Germanium Experiment for Neutrinoless ββ Decay (LEGEND) is a ton-scale, 76Ge-based, neutrinoless double-beta (0νββ) decay experimental program with discovery potential at half-lifes greater than 1028 years.

Low-background and low-noise signal readout electronics in close vicinity to the HPGe-detectors are crucial in order to achieve the experiment’s sensitivity on 0νββ-decay. The close proximity to the detectors poses unique challenges to balance electronic performance with radiopurity requirements. In LEGEND-1000, the use of Application-Specific Integrated Circuit (ASIC) technology would allow to implement the entire charge sensitive amplifier into a single low-mass chip with ultimate electronic noise performance and signal fidelity while ideally further reducing backgrounds.

In this contribution, the current status of the LEGEND-1000 ASIC based readout development will be presented. It will focus on the design challenges of the CSA implementation and present first results of simulations and measurements of the chip.

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