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

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