{"paper":{"title":"Electromagnetic Backgrounds and Potassium-42 Activity in the DEAP-3600 Dark Matter Detector","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"nucl-ex","authors_text":"A. B. McDonald, A. Butcher, A. Erlandson, A. Flower, A. J. Noble, A. Joy, A. Kemp, A. L. Hallin, A. Zu\\~niga-Reyes, B. Beltran, B. Broerman, B. Lehnert, B. Smith, B. Sur, B. T. Cleveland, C. E. Bina, C. Hearns, C. J. Jillings, C. Mielnichuk, C. Nantais, C. Ng, C. Ouellet, C. Rethmeier, C. Stone, (DEAP Collaboration), D. Gallacher, D. Goeldi, D. R. Grant, E. Sanchez Garc\\'ia, E. T. Rand, E. V\\'azquez-J\\'auregui, F. A. Duncan, F. La Zia, F. Reti\\`ere, G. Fiorillo, G. Kaur, G. Longo, G. R. Araujo, I. Kochanek, J. B. McLaughlin, J. F. Bueno, J. Lock, J. Monroe, J. Walding, J. Willis, K. Dering, K. Graham, L. Veloce, M. Batygov, M. C\\'ardenas-Montes, M. Chen, M.-C. Piro, M. Dunford, M. G. Boulay, M. Hamstra, M. Ku\\'zniak, M. Waqar, M. Ward, N. Fatemighomi, N. J. T. Smith, N. Seeburn, O. Kamaev, O. Litvinov, P. Garc\\'ia Abia, P. Giampa, P. Gorel, P. J. Harvey, P. Majewski, P. M. Burghardt, P. Nadeau, P. Pasuthip, P. Skensved, R. Ajaj, R. J. Ford, R. Mehdiyev, R. Santorelli, R. Stainforth, S. Cavuoti, S. Garg, S. J. M. Peeters, S. Langrock, S. Viel, S. Westerdale, T. McElroy, T. McGinn, T. R. Pollmann, T. Sonley, V. Pesudo, V. Strickland, V. V. Golovko, X. Li, Y. Chen","submitted_at":"2019-05-14T19:40:23Z","abstract_excerpt":"The DEAP-3600 experiment is searching for WIMP dark matter with a 3.3 tonne single phase liquid argon (LAr) target, located 2.1 km underground at SNOLAB. The experimental signature of dark matter interactions is keV-scale $^{40}$Ar nuclear recoils (NR) producing 128 nm LAr scintillation photons observed by PMTs. The largest backgrounds in DEAP-3600 are electronic recoils (ER) induced by $\\beta$ and $\\gamma$-rays originating from internal and external radioactivity in the detector material. A background model of the ER interactions in DEAP-3600 was developed and is described in this work. The m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.05811","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1905.05811/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}