Projected background and sensitivity of AMoRE-II
Abstract
AMoRE-II aims to search for neutrinoless double beta decay with an array of 423 LiMoO 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 meters deep in Jeongseon, Korea. The goal of AMoRE-II is to reach up to 6 10 years, corresponding to an effective Majorana mass of 15 - 29 meV, covering all the inverted mass hierarchy regions. 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 10counts/(keVkgyr) requirement for AMoRE-II in the region of interest (ROI) and show the projected half-life sensitivity based on the simulation study.
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Cite
@article{arxiv.2406.09698,
title = {Projected background and sensitivity of AMoRE-II},
author = {A. Agrawal and V. V. Alenkov and P. Aryal and J. Beyer and B. Bhandari and R. S. Boiko and K. Boonin and O. Buzanov and C. R. Byeon and N. Chanthima and M. K. Cheoun and J. S. Choe and Seonho Choi and S. Choudhury and J. S. Chung and F. A. Danevich and M. Djamal and D. Drung and C. Enss and A. Fleischmann and A. M. Gangapshev and L. Gastaldo and Y. M. Gavrilyuk and A. M. Gezhaev and O. Gileva and V. D. Grigorieva and V. I. Gurentsov and C. Ha and D. H. Ha and E. J. Ha and D. H. Hwnag and E. J. Jeon and J. A. Jeon and H. S. Jo and J. Kaewkhao and C. S. Kang and W. G. Kang and V. V. Kazalov and S. Kempf and A. Khan and S. Khan and D. Y. Kim and G. W. Kim and H. B. Kim and Ho-Jong Kim and H. J. Kim and H. L. Kim and H. S. Kim and M. B. Kim and S. C. Kim and S. K. Kim and S. R. Kim and W. T. Kim and Y. D. Kim and Y. H. Kim and K. Kirdsiri and Y. J. Ko and V. V. Kobychev and V. Kornoukhov V. V. Kuzminov and D. H. Kwon and C. H. Lee and D. Y. Lee and E. K. Lee and H. J. Lee and H. S. Lee and J. Lee and J. Y. Lee and K. B. Lee and M. H. Lee and M. K. Lee and S. W. Lee and Y. C. Lee and D. S. Leonard and H. S. Lim and B. Mailyan and E. P. Makarov and P. Nyanda and Y. Oh and S. L. Olsen and S. I. Panasenko and H. K. Park and H. S. Park and K. S. Park and S. Y. Park and O. G. Polischuk and H. Prihtiadi and S. Ra and S. S. Ratkevich G. Rooh and M. B. Sari and J. Seo and K. M. Seo and B. Sharma and K. A. Shin and V. N. Shlegel and K. Siyeon and J. So and N. V. Sokur and J. K. Son and J. W. Song and N. Srisittipokakun and V. I. Tretyak and R. Wirawan and K. R. Woo and H. J. Yeon and Y. S. Yoon and Q. Yue},
journal= {arXiv preprint arXiv:2406.09698},
year = {2024}
}