Speaker
Description
AMoRE is an international collaboration to search for the neutrinoless double-beta (0νββ) decay of ¹⁰⁰Mo, utilizing enriched molybdate scintillating crystals. AMoRE-I, the second phase of the program following the AMoRE-Pilot, was conducted at the Yangyang Underground Laboratory(Y2L) over a period of 29 months (December 2020 – May 2023), using an array of 18 crystals with a total mass of 6.194 kg.
We present a report on the background study of the AMoRE-I experimental data with 8.02 kg·year exposure. The model includes contributions from major background sources. Internal sources such as ²³²Th, ²³⁵U, ²³⁸U, ⁴⁰K, and two-neutrino double-beta decay (2νββ) of ¹⁰⁰Mo, along with external components including gamma rays from ²²²Rn daughters, neutrons, and radiation from surrounding rocks, are simulated using Geant4. We compare the experimentally measured beta-gamma spectrum to the results from Monte Carlo simulations.
| Collaboration you are representing | AMoRE |
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