Cosmogenic background study for a 100Mo-based bolometric demonstration experiment at China JinPing underground Laboratory

Abstract

We perform simulation study for a 10-kg ${}^{100}$Mo-based bolometeric demonstration experiment for neutrinoless double-beta decay ($0\nu \beta \beta$) search at China JinPing underground Laboratory (CJPL). Cosmogenic production of radionuclides in ${}^{100}$Mo-enriched lithium molybdate crystals and copper components of the detector system are studied using Geant4 toolkit based on the simulated cosmic ray data from the CRY library. Background energy spectra of the cosmogenic radionuclides including ${}^{56}$Co, ${}^{82}$Rb and ${}^{88}$Y which are harmful for the ${}^{100}$Mo-based $0\nu \beta \beta$ experiment are investigated. We then evaluate the total cosmogenic background level in the ${}^{100}$Mo $0\nu \beta \beta$ search energy region of interest (ROI) for the demonstration experiment. After one year of cooling down underground, the residual background contribution is found to be 1.8$\times$10${}^{-6}$ cts/kg/keV/yr and 3.3$\times$10${}^{-4}$ cts/kg/keV/yr from crystals and copper components, respectively. Furthermore, underground cosmogenic activation of copper and lithium molybdate crystal is calculated based on the simulation spectra of neutron and proton in CJPL. The underground cosmogenic background is found to be negligible in the ROI.

References in corpus (19)

• Search for Majorana Neutrinos near the Inverted Mass Hierarchy Region with KamLAND-Zen
• Neutrinoless double beta decay: 2015 review
• Final Results of GERDA on the Search for Neutrinoless Double-$\beta$ Decay
• Improved Limit on Neutrinoless Double-Beta Decay in ${}^{130}$Te with CUORE
• Neutrinoless double-beta decay. A brief review
• The projected background for the CUORE experiment
• Measurement of Cosmic Ray Flux in China JinPing underground Laboratory
• ACTIVIA: Calculation of Isotope Production Cross-sections and Yields
• Cosmogenic Production as a Background in Searching for Rare Physics Processes
• Cosmogenic activation of Germanium and its reduction for low background experiments
• Cosmogenic Activation of Materials Used in Rare Event Search Experiments
• Measurement of the 2$\nu \beta \beta$ Decay Half-life of ${}^{130}$Te with CUORE
• Cosmogenic activation of materials
• Simulations of background sources in AMoRE-I experiment
• Cosmogenic Activation of Germanium Used for Tonne-Scale Rare Event Search Experiments
• Study on cosmogenic activation in germanium detectors for future tonne-scale CDEX experiment
• Cosmogenic activation in double beta decay experiments
• First data from the CUPID-Mo neutrinoless double beta decay experiment
• Neutron and muon-induced background studies for the AMoRE double-beta decay experiment

Cited by in corpus (1)

• Study of cosmogenic activation above ground for the DarkSide-20k experiment