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Background Suppression in the COSINUS Experiment: Active Muon Veto and Radiopure Materials Selection

by M. Stukel, G. Angloher, M.R. Bharadwaj, I. Dafinei , N. Di Marco, L. Einfalt, F. Ferroni, S. Fichtinger, A. Filipponi, T. Frank, M. Friedl, A. Fuss , Z. Ge, M. Heikinheimo, K. Huitu, M. Kellermann, R. Maji, M. Mancuso, L. Pagnanini, F. Petricca, S. Pirro, F. Pröbst, G. Profeta, A. Puiu, F. Reindl, K. Schäffner, J. Schieck, D. Schmiedmayer, C. Schwertner, M. Stahlberg, A. Stendahl, F. Wagner, S. Yue, V. Zema, and Y. Zhu

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Leonie Einfalt · Matthew Stukel
Submission information
Preprint Link: scipost_202209_00058v2  (pdf)
Date accepted: 2023-04-28
Date submitted: 2022-11-18 11:07
Submitted by: Stukel, Matthew
Submitted to: SciPost Physics Proceedings
Proceedings issue: 14th International Conference on Identification of Dark Matter (IDM2022)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Experiment
  • Nuclear Physics - Experiment
Approaches: Experimental, Computational


For over twenty-five years the DAMA/LIBRA experiment has observed an annual modulation signal that is consistent with a dark matter explanation. This signal is, currently, in tension with the null results observed by other searches that utilize different target detectors. The COSINUS experiment will perform a model-independent cross-check of the DAMA/LIBRA result by using the same target material, NaI crystals, operated as scintillating calorimeters. By measuring both temperature and light the NaI crystals in COSINUS will be able to distinguish between electron and nuclear recoils on an event-by-event basis. However, background events induced by cosmic-rays, environmental radioactivity or the intrinsic contamination of the materials used in the crystal, shielding and infrastructure can pose an issue to any analysis and must be fully understood. We report on the status of the development of the simulation for an active water Cherenkov muon veto, as well as the results of the beginning radiogenic material screening.

Author comments upon resubmission

I have made the changes asked for by the reviewer. Thank you for the consideration

List of changes

Confidence levels have been added to table 1.

Published as SciPost Phys. Proc. 12, 032 (2023)

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