The first phase of the Advanced Mo-based Rare Process Experiment (AMoRE-I), an experimental search for neutrinoless double beta decay (0νββ) of 100Mo in calcium molybdate (CMO) crystal using cryogenic techniques, is in preparation at the YangYang underground laboratory (Y2L) in South Korea. A GEANT4 based Monte Carlo simulation was performed for background estimation in the first-phase the AMoRE-I detector and shield configuration. Background sources such as 238U, 232Th, 40K, 235U, and 210Pb were simulated from inside the crystals, surrounding materials, outer shielding walls of the Y2L cavity. The estimated background rate in the region of interest was found to be <1.5×10−3 counts/keV/kg/yr (ckky). The effects of random coincidences between background and two-neutrino double beta decay of 100Mo were estimated as a potential background source and its estimated rate was <2.3×10−4 ckky.
@article{arxiv.1601.01249,
title = {Simulations of background sources in AMoRE-I experiment},
author = {A. Luqman and D. H. Ha and J. J. Lee and E. J. Jeon and H. S. Jo and H. J. Kim and Y. D. Kim and Y. H. Kim and V. V. Kobychev and H. S. Lee and H. K. Park and K. Siyeon and J. H. So and V. I. Tretyak and Y. S. Yoon},
journal= {arXiv preprint arXiv:1601.01249},
year = {2017}
}