Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 60: Methods in Astroparticle Physics III
T 60.3: Talk
Wednesday, March 18, 2026, 16:45–17:00, KS 00.004
Development of the LUIGI ASIC for LEGEND-1000 — •Juan Pablo Ulloa Beteta1, Andreas Gieb1, Susanne Mertens1, Michael Willers2, Edgar Sanchez Garcia1, Hannes Bonet1, and Florian Henkes2 for the LEGEND collaboration — 1Max-Planck-Institut für Kernphysik, Heidelberg DE — 2Technische Universität München, München DE
The Large Enriched Germanium Experiment for Neutrinoless ββ Decay (LEGEND) is a 76Ge-based experiment searching for the neutrinoless double-beta (0νββ) decay. The second stage of the experiment, LEGEND-1000, aims to reach discovery sensitivity at half-lives beyond 1028 years, covering the inverted-ordering neutrino mass region. Achieving this goal requires about 1000 kg of enriched germanium detectors, a substantial reduction of background in the region of interest, together with further improvements in noise performance and signal fidelity. An important contribution to the overall background budget arises from the readout electronics due to their proximity to the detectors. At the same time, the front-end electronics play a critical role for the energy resolution and pulse shape discrimination. In this context, we explore a novel approach to ASIC-based charge-sensitive front-end electronics designed for operation close to high-purity germanium detectors in liquid argon under low-background restrictions.