Simulations of background sources in AMoRE-I experiment

Abstract

The first phase of the Advanced Mo-based Rare Process Experiment (AMoRE-I), an experimental search for neutrinoless double beta decay (0$\nu \beta \beta$) of ${}^{100}$Mo 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 ${}^{238}$U, ${}^{232}$Th, ${}^{40}$K, ${}^{235}$U, and ${}^{210}$Pb 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 $<1.5\times 10^{-3}$ counts/keV/kg/yr (ckky). The effects of random coincidences between background and two-neutrino double beta decay of ${}^{100}$Mo were estimated as a potential background source and its estimated rate was $<2.3\times 10^{-4}$ ckky.

References in corpus (6)

• Development of CaMoO4 crystal scintillators for double beta decay experiment with 100-Mo
• Validation of techniques to mitigate copper surface contamination in CUORE
• Random coincidence of $2\nu 2\beta$ decay events as a background source in bolometric $0\nu 2\beta$ decay experiments
• A CaMoO4 Crystal Low Temperature Detector for the AMoRE Neutrinoless Double Beta Decay Search
• Technical Design Report for the AMoRE $0\nu \beta \beta$ Decay Search Experiment
• Rejection of randomly coinciding events in ZnMoO${}_4$ scintillating bolometers

Cited by in corpus (14)

• Development of ${}^{100}$Mo-containing scintillating bolometers for a high-sensitivity neutrinoless double-beta decay search
• Low background techniques in bolometers for double-beta decay search
• Radioactive contamination of scintillators
• Search for neutrinoless double beta decay
• Neutron background measurement for rare event search experiments in the YangYang Underground Laboratory
• Radiopure tungstate and molybdate crystal scintillators for double beta decay experiments
• Potentialities of the future technical improvements in the search of rare nuclear decays by bolometers
• Neutron and muon-induced background studies for the AMoRE double-beta decay experiment
• Alpha backgrounds in the AMoRE-Pilot experiment
• BINGO innovative assembly for background reduction in bolometric $0\nu \beta \beta$ experiments
• Neutrinoless Double Beta Decay and Light Sterile Neutrino
• Measurement of the Background Activities of a 100Mo-enriched powder sample for AMoRE crystal material using a single high purity germanium detector
• Cosmogenic background study for a 100Mo-based bolometric demonstration experiment at China JinPing underground Laboratory
• Measurement of the Background Activities of a 100Mo-enriched Powder Sample for an AMoRE Crystal Material by using Fourteen High-Purity Germanium Detectors