Production, quality assurance and quality control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber



Acerbi, F, Adhikari, P, Agnes, P, Ahmad, I, Albergo, S, Albuquerque, IF, Alexander, T, Alton, AK, Amaudruz, P, Angiolilli, M
et al (show 297 more authors) (2025) Production, quality assurance and quality control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber EUROPEAN PHYSICAL JOURNAL C, 85 (11). 1334-. ISSN 1434-6044, 1434-6052

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Abstract

The DarkSide-20k dark matter direct detection experiment will employ a 21m2 silicon photomultiplier (SiPM) array, instrumenting a dual-phase 50 tonnes liquid argon Time Projection Chamber (TPC). SiPMs are arranged into modular photosensors called Tiles, each integrating 24 SiPMs onto a printed circuit board (PCB) that provides signal amplification, power distribution, and a single-ended output for simplified readout. 16 Tiles are further grouped into Photo-Detector Units (PDUs). This paper details the production of the Tiles and the Quality Assurance and Quality Control (QA-QC) protocol established to ensure their performance and uniformity. The production and QA-QC of the Tiles are carried out at Nuova Officina Assergi (NOA), an ISO-6 clean room facility at LNGS. This process includes wafer-level cryogenic characterisation, precision die attaching, wire bonding, and extensive electrical and optical validation of each Tile. The overall production yield exceeds 83.5%, matching the requirements of the DarkSide-20k production plan. These results validate the robustness of the Tile design and its suitability for operation in a cryogenic environment.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Science & Engineering > School of Physical Sciences > Physics
Depositing User: Symplectic Admin
Date Deposited: 13 Jan 2026 11:15
Last Modified: 16 Jun 2026 08:09
DOI: 10.1140/epjc/s10052-025-14940-1
Open Access URL: https://link.springer.com/content/pdf/10.1140/epjc...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3196573
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