The DAMIC-M Low Background Chamber

I. Arnquist,N. Avalos, P. Bailly, D. Baxter, X. Bertou, M. Bogdan, C. Bourgeois, J. Brandt, A. Cadiou, N. Castello-Mor,A. E. Chavarria, M. Conde, J. Cuevas-Zepeda, A. Dastgheibi-Fard, C. De Dominicis,O. Deligny, R. Desani, M. Dhellot, J. Duarte-Campderros, E. Estrada, D. Florin, N. Gadola, R. Gaior, E. -L. Gkougkousis,J. Gonzalez Sanchez, S. Hope, T. Hossbach, M. Huehn, M. Kallander, B. Kilminster, L. Iddir, A. Lantero-Barreda, I. Lawson, H. Lebbolo, S. Lee, P. Leray, A. Letessier Selvon, H. Lin, P. Loaiza, A. Lopez-Virto, I. Lounes, D. Martin, K. J. McGuire, T. Milleto, P. Mitra, D. Moya Martin, S. Munagavalasa, D. Norcini, C. Overman,S. Paul, D. Peterson, A. Piers, O. Pochon,P. Privitera, D. Reynet, P. Robmann, R. Roehnelt, M. Settimo, S. Smee,R. Smida, B. Stillwell, T. Van Wechel, M. Traina, R. Vilar, P. Vallerand, A. Vollhardt, G. Warot, D. Wolf, R. Yajur, J-P. Zopounidis

arxiv（2024）

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摘要

The DArk Matter In CCDs at Modane (DAMIC-M) experiment is designed to search for light dark matter (m_χ<10 GeV/c^2) at the Laboratoire Souterrain de Modane (LSM) in France. DAMIC-M will use skipper charge-coupled devices (CCDs) as a kg-scale active detector target. Its single-electron resolution will enable eV-scale energy thresholds and thus world-leading sensitivity to a range of hidden sector dark matter candidates. A DAMIC-M prototype, the Low Background Chamber (LBC), has been taking data at LSM since 2022. The LBC provides a low-background environment, which has been used to characterize skipper CCDs, study dark current, and measure radiopurity of materials planned for DAMIC-M. It also allows testing of various subsystems like readout electronics, data acquisition software, and slow control. This paper describes the technical design and performance of the LBC.

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