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

Acerbi, F. ; Cebrian, S. (Universidad de Zaragoza) ; Dylon, F. ; Franco, D. ; Hidalgo, C. ; Keloth, R. ; Leoni, A. ; Martinez, M. (Universidad de Zaragoza) ; Ortiz de Solórzano, A. (Universidad de Zaragoza) ; Queiroga Bazetto, M. ; Raffaelli, F. ; Sabia, M. A. ; Torres-Lara, S. ; Unzhakov, E. V. ; Ventura, P. ; Wada, M. ; Yang, C. Zykova, M. P.

Resumen: The DarkSide-20k dark matter direct detection experiment will employ a 21 m2 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.

Idioma: Inglés

DOI: 10.1140/epjc/s10052-025-14940-1

Año: 2025

Publicado en: The European Physical Journal C 85, 11 (2025), 1334 [27 pp.]
ISSN: 1434-6044

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2022-138357NB-C22

Tipo y forma: Article (Published version)

Área (Departamento): Área Técnica. Lab. y Talleres (Dpto. Física Teórica)
Área (Departamento): Área Física Atóm.Molec.y Nucl. (Dpto. Física Teórica)