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Background study of the AMoRE-pilot experiment Full article

Journal Astroparticle Physics
ISSN: 0927-6505 , E-ISSN: 1873-2852
Output data Year: 2024, Volume: 162, Article number : 102991, Pages count : 10 DOI: 10.1016/j.astropartphys.2024.102991
Authors Agrawal A. 2 , Alenkov V.V. 2 , Aryal P. 2 , Beyer J. 2 , Bhandari B. 2 , Boiko R.S. 2 , Boonin K. 2 , Buzanov O. 2 , Byeon C.R. 2 , Chanthima N. 2 , Cheoun M.K. 2 , Choe J.S. 2 , Choi Seonho 2 , Choudhury S. 2 , Chung J.S. 2 , Danevich F.A. 2 , Djamal M. 2 , Drung D. 2 , Enss C. 2 , Fleischmann A. 2 , Gangapshev A.M. 2 , Gastaldo L. 2 , Gavrilyuk Yu.M. 2 , Gezhaev A.M. 2 , Gileva O. 2 , Grigorieva V.D. 1 , Gurentsov V.I. 2 , Ha C. 2 , Ha D.H. 2 , Ha E.J. 2 , Hwang D.H. 2 , Jeon E.J. 2 , Jeon J.A. 2 , Jo H.S. 2 , Kaewkhao J. 2 , Kang C.S. 2 , Kang W.G. 2 , Kazalov V.V. 2 , Kempf S. 2 , Khan A. 2 , Khan S. 2 , Kim D.Y. 2 , Kim G.W. 2 , Kim H.B. 2 , Kim Ho-Jong 2 , Kim H.J. 2 , Kim H.L. 2 , Kim H.S. 2 , Kim M.B. 2 , Kim S.C. 2 , Kim S.K. 2 , Kim S.R. 2 , Kim Siyeon 2 , Kim W.T. 2 , Kim Y.D. 2 , Kim Y.H. 2 , Kirdsiri K. 2 , Ko Y.J. 2 , Kobychev V.V. 2 , Kornoukhov V. 2 , Kuzminov V.V. 2 , Kwon D.H. 2 , Lee C.H. 2 , Lee DongYeup 2 , Lee E.K. 2 , Lee H.J. 2 , Lee H.S. 2 , Lee J. 2 , Lee J.Y. 2 , Lee K.B. 2 , Lee M.H. 2 , Lee M.K. 2 , Lee S.W. 2 , Lee Y.C. 2 , Leonard D.S. 2 , Lim H.S. 2 , Mailyan B. 2 , Makarov E.P. 1 , Nyanda P. 2 , Oh Y. 2 , Olsen S.L. 2 , Panasenko S.I. 2 , Park H.K. 2 , Park H.S. 2 , Park K.S. 2 , Park S.Y. 2 , Polischuk O.G. 2 , Prihtiadi H. 2 , Ra S. 2 , Ratkevich S.S. 2 , Rooh G. 2 , Sari M.B. 2 , Seo J. 2 , Seo K.M. 2 , Sharma B. 2 , Shin K.A. 2 , Shlegel V.N. 1 , So J. 2 , Sokur N.V. 2 , Son J.K. 2 , Song J.W. 2 , Srisittipokakun N. 2 , Tretyak V.I. 2 , Wirawan R. 2 , Woo K.R. 2 , Yeon H.J. 2 , Yoon Y.S. 2 , Yue Q. 2
Affiliations
1 Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences
2 AMORE

Abstract: We report a study on the background of the Advanced Molybdenum-Based Rare process Experiment (AMoRE), a search for neutrinoless double beta decay (0n2b) of 100Mo. The pilot stage of the experiment was conducted using 1.9 kg of CaMoO4 crystals at the Yangyang Underground Laboratory, South Korea, from 2015 to 2018. We compared the measured energy spectra in three experimental configurations with the results of Monte Carlo simulations and identified the background sources in each configuration. We replaced several detector components and enhanced the neutron shielding to lower the background level between configurations. A limit on the half-life of 0n2b decay of 100Mo was found at 3*10^23 years at 90% confidence level, based on the measured background and its modeling. Further reduction of the background rate in the AMoRE-I and AMoRE-II are discussed.
Cite: Agrawal A. , Alenkov V.V. , Aryal P. , Beyer J. , Bhandari B. , Boiko R.S. , Boonin K. , Buzanov O. , Byeon C.R. , Chanthima N. , Cheoun M.K. , Choe J.S. , Choi S. , Choudhury S. , Chung J.S. , Danevich F.A. , Djamal M. , Drung D. , Enss C. , Fleischmann A. , Gangapshev A.M. , Gastaldo L. , Gavrilyuk Y.M. , Gezhaev A.M. , Gileva O. , Grigorieva V.D. , Gurentsov V.I. , Ha C. , Ha D.H. , Ha E.J. , Hwang D.H. , Jeon E.J. , Jeon J.A. , Jo H.S. , Kaewkhao J. , Kang C.S. , Kang W.G. , Kazalov V.V. , Kempf S. , Khan A. , Khan S. , Kim D.Y. , Kim G.W. , Kim H.B. , Kim H-J. , Kim H.J. , Kim H.L. , Kim H.S. , Kim M.B. , Kim S.C. , Kim S.K. , Kim S.R. , Kim S. , Kim W.T. , Kim Y.D. , Kim Y.H. , Kirdsiri K. , Ko Y.J. , Kobychev V.V. , Kornoukhov V. , Kuzminov V.V. , Kwon D.H. , Lee C.H. , Lee D. , Lee E.K. , Lee H.J. , Lee H.S. , Lee J. , Lee J.Y. , Lee K.B. , Lee M.H. , Lee M.K. , Lee S.W. , Lee Y.C. , Leonard D.S. , Lim H.S. , Mailyan B. , Makarov E.P. , Nyanda P. , Oh Y. , Olsen S.L. , Panasenko S.I. , Park H.K. , Park H.S. , Park K.S. , Park S.Y. , Polischuk O.G. , Prihtiadi H. , Ra S. , Ratkevich S.S. , Rooh G. , Sari M.B. , Seo J. , Seo K.M. , Sharma B. , Shin K.A. , Shlegel V.N. , So J. , Sokur N.V. , Son J.K. , Song J.W. , Srisittipokakun N. , Tretyak V.I. , Wirawan R. , Woo K.R. , Yeon H.J. , Yoon Y.S. , Yue Q.
Background study of the AMoRE-pilot experiment
Astroparticle Physics. 2024. V.162. 102991 :1-10. DOI: 10.1016/j.astropartphys.2024.102991 WOS Scopus РИНЦ OpenAlex
Dates:
Published online: Oct 1, 2024
Published print: Oct 31, 2024
Identifiers:
Web of science: WOS:001376697200001
Scopus: 2-s2.0-85195398833
Elibrary: 67638995
OpenAlex: W4398244823
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