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T: Fachverband Teilchenphysik
T 75: Neutrino Physics without Accelerators 6
T 75.2: Vortrag
Mittwoch, 23. März 2022, 16:35–16:50, T-H34
ASIC based readout electronics for high-purity Germanium detectors in LEGEND-1000 — •Florian Henkes, Frank Edzards, Susanne Mertens, and Michael Willers for the LEGEND collaboration — Technische Universität München, München, Deutschland
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.
Signal readout electronics are essential 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-200, the readout system consists of a charge sensitive amplifier realised from discrete components with an ultra radiopure first stage close to the detectors and a second stage from less radiopure commercial components. 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 at the Technical University of Munich will be presented and prospects for future developments of ASIC based charge sensitive amplifiers for high-purity germanium detectors will be discussed.