Cosmogenic production as a background in searching for rare physics processes |
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| Institution: | 1. Department of Physics, The University of South Dakota, Vermillion, SD 57069, United States;2. Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China;3. Key Laboratory of Quark and Lepton Physics, Huazhong Normal University, Ministry of Education, China;4. Los Alamos National Laboratory, Los Alamos, NM 87545, United States;1. Radiation Measurement Research Section, National Institute of Radiological Sciences, Chiba 263-8555, Japan;2. Particle Therapy Division, Research Center for Innovative Oncology, National Cancer Center, Chiba 277-8577, Japan;3. Research Institute of Nuclear Engineering, University of Fukui, Fukui 914-0055, Japan;4. College of Industrial Technology, Nihon University, Chiba 275-8576, Japan;5. Nuclear Engineering, Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden;6. Department of Physics, Oklahoma State University, 74074 OK, USA;1. Shahid Shamsipour Technical College, Tehran, Iran;2. Nuclear Science and Technology Research Center, AEOI, Tehran, Iran;3. Department of Energy Engineering and Physics, Amir Kabir University of Technology, Tehran, Iran;4. Radiation Application Department, Shahid Beheshti University, Tehran, Iran;5. School of Physics, Damghan University, Damghan, Iran;1. Department of Physics, Division of Science and Technology, University of Education, College Road Township, Lahore, Pakistan;2. Department of Physics, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan;3. National Centre for Physics, Islamabad, Pakistan |
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| Abstract: | We revisit calculations of the cosmogenic production rates for several long-lived isotopes that are potential sources of background in searching for rare physics processes such as the detection of dark matter and neutrinoless double-beta decay. Using updated cosmic-ray neutron flux measurements, we use TALYS 1.0 to investigate the cosmogenic activation of stable isotopes of several detector targets and find that the cosmogenic isotopes produced inside the target materials and cryostat can result in large backgrounds for dark matter searches and neutrinoless double-beta decay. We use previously published low-background HPGe data to constrain the production of 3H on the surface and the upper limit is consistent with our calculation. We note that cosmogenic production of several isotopes in various targets can generate potential backgrounds for dark matter detection and neutrinoless double-beta decay with a massive detector, thus great care should be taken to limit and/or deal with the cosmogenic activation of the targets. |
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