Projected background and sensitivity of AMoRE-II

A. Agrawal; V. V. Alenkov; P. Aryal; J. Beyer; B. Bhandari; R. S. Boiko; K. Boonin; O. Buzanov; C. R. Byeon; N. Chanthima; M. K. Cheoun; J. S. Choe; Seonho Choi; S. Choudhury; J. S. Chung; F. A. Danevich; M. Djamal; D. Drung; C. Enss; A. Fleischmann; A. M. Gangapshev; L. Gastaldo; Y. M. Gavrilyuk; A. M. Gezhaev; O. Gileva; V. D. Grigorieva; V. I. Gurentsov; C. Ha; D. H. Ha; E. J. Ha; D. H. Hwnag; E. J. Jeon; J. A. Jeon; H. S. Jo; J. Kaewkhao; C. S. Kang; W. G. Kang; V. V. Kazalov; S. Kempf; A. Khan; S. Khan; D. Y. Kim; G. W. Kim; H. B. Kim; Ho-Jong Kim; H. J. Kim; H. L. Kim; H. S. Kim; M. B. Kim; S. C. Kim; S. K. Kim; S. R. Kim; W. T. Kim; Y. D. Kim; Y. H. Kim; K. Kirdsiri; Y. J. Ko; V. V. Kobychev; V. Kornoukhov; V. V. Kuzminov; D. H. Kwon; C. H. Lee; DongYeup 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. Lee; D. S. Leonard; H. S. Lim; B. Mailyan; E. P. Makarov; P. Nyanda; Y. Oh; S. L. Olsen; S. I. Panasenko; H. K. Park; H. S. Park; K. S. Park; S. Y. Park; O. G. Polischuk; H. Prihtiadi; S. Ra; S. S. Ratkevich; G. Rooh; E. Sala; M. B. Sari; J. Seo; K. M. Seo; B. Sharma; K. A. Shin; V. N. Shlegel; K. Siyeon; J. So; N. V. Sokur; J. K. Son; J. W. Song; N. Srisittipokakun; V. I. Tretyak; R. Wirawan; K. R. Woo; H. J. Yeon; Y. S. Yoon; Q. Yue

doi:10.1140/epjc/s10052-024-13516-9

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2025) 85: 9
https://doi.org/10.1140/epjc/s10052-024-13516-9

Regular Article - Experimental Physics

Projected background and sensitivity of AMoRE-II

A. Agrawal¹, V. V. Alenkov², P. Aryal³, J. Beyer⁴, B. Bhandari¹⁷, R. S. Boiko⁶, K. Boonin⁷, O. Buzanov², C. R. Byeon³, N. Chanthima⁷, M. K. Cheoun⁸, J. S. Choe⁹, Seonho Choi¹⁰, S. Choudhury¹, J. S. Chung¹¹, F. A. Danevich⁶^,28, M. Djamal¹², D. Drung⁴, C. Enss¹³, A. Fleischmann¹³, A. M. Gangapshev¹⁴, L. Gastaldo¹³, Y. M. Gavrilyuk¹⁴, A. M. Gezhaev¹⁴, O. Gileva⁹, V. D. Grigorieva¹⁵, V. I. Gurentsov¹⁴, C. Ha¹¹, D. H. Ha³, E. J. Ha⁸, D. H. Hwnag⁹, E. J. Jeon⁵^,9^a, J. A. Jeon⁹, H. S. Jo³, J. Kaewkhao⁷, C. S. Kang⁹, W. G. Kang⁹, V. V. Kazalov¹⁴, S. Kempf²⁶, A. Khan³, S. Khan¹⁶, D. Y. Kim⁹, G. W. Kim⁹, H. B. Kim¹⁰, Ho-Jong Kim⁹, H. J. Kim³, H. L. Kim³, H. S. Kim¹⁷, M. B. Kim⁹, S. C. Kim⁹, S. K. Kim¹⁰, S. R. Kim⁹, W. T. Kim⁵, Y. D. Kim⁵^,9, Y. H. Kim⁵^,9, K. Kirdsiri⁷, Y. J. Ko⁹, V. V. Kobychev⁶, V. Kornoukhov¹⁸, V. V. Kuzminov¹⁴, D. H. Kwon⁵, C. H. Lee⁹, DongYeup Lee¹⁹, E. K. Lee⁹, H. J. Lee⁹, H. S. Lee⁵^,9, J. Lee⁹, J. Y. Lee³, K. B. Lee²⁰, M. H. Lee⁵^,9, M. K. Lee²⁰, S. W. Lee³, Y. C. Lee¹⁰, D. S. Leonard⁹, H. S. Lim³, B. Mailyan²¹, E. P. Makarov¹⁵, P. Nyanda⁵, Y. Oh⁹, S. L. Olsen⁹, S. I. Panasenko¹⁴^,22, H. K. Park¹⁹, H. S. Park²⁰, K. S. Park⁹, S. Y. Park⁹, O. G. Polischuk⁶, H. Prihtiadi²⁷, S. Ra⁹, S. S. Ratkevich¹⁴^,22, G. Rooh²³, E. Sala⁹, M. B. Sari¹², J. Seo⁵^b, K. M. Seo¹⁷, B. Sharma⁵, K. A. Shin⁹, V. N. Shlegel¹⁵, K. Siyeon¹¹, J. So⁹, N. V. Sokur⁶, J. K. Son⁹, J. W. Song⁷, N. Srisittipokakun⁷, V. I. Tretyak⁶^,29, R. Wirawan²⁴, K. R. Woo⁹, H. J. Yeon⁹, Y. S. Yoon²⁰, Q. Yue²⁵ and The AMoRE Collaboration

¹ Indian Institute of Science
² JSC FOMOS-Materials
³ Department of Physics, Kyungpook National University
⁴ Physikalisch-Technische Bundesanstalt
⁵ University of Science and Technology (UST)
⁶ Institute for Nuclear Research of NASU
⁷ Nakhon Pathom Rajabhat University
⁸ Department of Physics, Soongsil University
⁹ Center for Underground Physics, Institute for Basic Science (IBS)
¹⁰ Department of Physics and Astronomy, Seoul National University
¹¹ Department of Physics, Chung-Ang University
¹² Department of Physics, Institut Teknologi
¹³ Kirchhoff-Institute for Physics
¹⁴ Neutrino Observatory of INR RAS
¹⁵ Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Science
¹⁶ Department of Physics, Kohat University of Science and Technology
¹⁷ Department of Physics and Astronomy, Sejong University
¹⁸ National Research Nuclear University MEPhI
¹⁹ Department of Accelerator Science
²⁰ Korea Research Institute of Standards and Science
²¹ Florida Institute of Technology
²² V.N. Karazin Kharkiv National University
²³ Department of Physics, Abdul Wali Khan University
²⁴ Department of Physics, University of Mataram
²⁵ Tsinghua University
²⁶ Institute of Micro- and Nanoelectronic Systems (IMS), Karlsruhe Institute of Technology (KIT)
²⁷ Department of Physics, Universitas Negeri Malang
²⁸ INFN, Sezione di Roma
²⁹ INFN, Laboratori Nazionali del Gran Sasso

^a ejjeon@ibs.re.kr
^b jeewon.seo.ibs@gmail.com

Received: 13 June 2024
Accepted: 14 October 2024
Published online: 8 January 2025

Abstract

AMoRE-II aims to search for neutrinoless double beta decay ( $0 ν β β$ $0\nu \beta \beta$ ) with an array of 423 ${Li}_{2}^{100} {MoO}_{4}$ $\hbox {Li}_2^{100}\hbox {MoO}_4$ crystals operating in the cryogenic system as the main phase of the Advanced Molybdenum-based Rare process Experiment (AMoRE). AMoRE has been planned to operate in three phases: AMoRE-pilot, AMoRE-I, and AMoRE-II. AMoRE-II is currently being installed at the Yemi Underground Laboratory, located approximately 1000 m deep in Jeongseon, Korea. The goal of the experiment is to reach an exclusion half-life sensitivity to the $0 ν β β$ $0\nu \beta \beta$ of $^{100}$ $^{100}$ Mo on the level of $T_{1 / 2}^{0 ν β β} > 6 \times 10^{26}$ $T^{0\nu \beta \beta }_{1/2} > 6 \times 10^{26}$ year that covers completely the inverted Majorana neutrino mass hierarchy region of (15–46) meV. To achieve this, the background level of the experimental configurations and possible background sources of gamma and beta events should be well understood. We have intensively performed Monte Carlo simulations using the GEANT4 toolkit in all the experimental configurations with potential sources. We report the estimated background level that meets the $10^{- 4}$ $10^{-4}$ counts/(keV $\cdot$ $\cdot$ kg $\cdot$ $\cdot$ year) requirement for AMoRE-II in the Region Of Interest (ROI) and show the projected half-life sensitivity based on the simulation study.

© The Author(s) 2024

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Funded by SCOAP³.

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Projected background and sensitivity of AMoRE-II

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