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.
Production, quality assurance and quality control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber / Null, N., Acerbi, F., Adhikari, P., Agnes, P., Ahmad, I., Albergo, S., Albuquerque, I.F., Alexander, T., Alton, A.K., Amaudruz, P., Angiolilli, M., Aprile, E., Atzori Corona, M., Auty, D.J., Ave, M., Avetisov, I.C., Azzolini, O., Back, H.O., Balmforth, Z., Barrado Olmedo, A., et al.. - In: EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6052. - 85:11(2025). [10.1140/epjc/s10052-025-14940-1]
Production, quality assurance and quality control of the SiPM Tiles for the DarkSide-20k Time Projection Chamber
Calabrese, R.;Castellani, A.;Cocco, V.;Consiglio, L.;D'Aniello, M.;Ferro, L.;Fiorillo, G.;Gabriele, F.;Gallina, G.;Hu, J.;Ianni, A.;Ianni, A.;Korga, G.;La Commara, M.;Lai, M.;Martinez, M.;Moretti, E.;Paternoster, G.;Ravinthiran, S.;Rudik, D.;Simeone, M.Investigation
;Suvorov, Y.;Taylor, A.;Taylor, J.;Ventura, P.;Williams, L.;
2025
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.| File | Dimensione | Formato | |
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