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Simulations of background sources in AMoRE-I experiment
- Authors
- Luqman, A.; Ha, D. H.; Lee, J.J.; Jeon, E.J.; Jo, H.S.; Kim, H. J.; Kim, Y.D.; Kim, Y. H.; Kobychev, V. V.; Lee, H.S.; Park, H.K.; Kim, Siyeon; So, J. H.; Tretyak, V. I.; Yoon, Y. S.
- Issue Date
- May-2017
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Background simulation; Detectors; Neutrinoless double beta decay; Underground experiment
- Citation
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.855, pp 140 - 147
- Pages
- 8
- Journal Title
- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
- Volume
- 855
- Start Page
- 140
- End Page
- 147
- ISSN
- 0168-9002
1872-9576
- Abstract
- The first phase of the Advanced Mo-based Rare process Experiment (AMoRE-I), an experimental search for neutrinoless double beta decay (0V beta beta) of Mo-100 in calcium molybdate (Ca-40(100) MoO4) crystal using cryogenic detection techniques, is in preparation at the YangYang underground laboratory (Y2L) in Korea. A GEANT4 based Monte Carlo simulation was performed for the first-phase AMoRE detector and shield configuration. Background sources such as U-238, Th-232 U-235, and Pb-210 from inside the crystals, surrounding materials, outer shielding walls of the Y2L cavity were simulated. The estimated background rate in the region of interest was estimated to be < 1.5 x 10(-3) counts/keV/kg/yr (ckky). The effects of random coincidences between backgrounds and two-neutrino double beta decays of Mo-100 as a potential background source were estimated to be < 2.3 x 10(-4) ckky.
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