Background study of the AMoRE-pilot experiment
Abstract
We report a study on the background of the Advanced Molybdenum-Based Rare process Experiment (AMoRE), a search for neutrinoless double beta decay (\znbb) of Mo. The pilot stage of the experiment was conducted using 1.9 kg of \CAMOO~ 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 decay of Mo was found at 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.
Keywords
Cite
@article{arxiv.2401.07476,
title = {Background study of the AMoRE-pilot experiment},
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 Yu. 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. Hwang 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 and V. V. Kuzminov and D. H. Kwon and C. H. Lee and DongYeup 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 and 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:2401.07476},
year = {2024}
}