PoS - Proceedings of Science
Volume 441 - XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP2023) - Neutrino Physics and Astrophysics
AMoRE-II preparation status
Y. Oh*  on behalf of the AMoRE Collaboration
Full text: pdf
Pre-published on: January 02, 2024
Published on: March 22, 2024
The main phase of AMoRE, AMoRE-II, is about to start its data taking to probe the neutrinoless double decay of molybdenum-100.
The experiment takes place 1000 meters underground at YemiLab in Jeongseon, Korea.
A cryogenic system containing molybdenum-100 enriched crystal detector modules is surrounded by heavy passive shields and muon counters made of plastic scintillator panels and water Cherenkov detectors.
We expect the background level to be below 10$^{-4}$ count/keV/kg/year with a 10 keV full-width-half-maximum energy resolution at the region of interest.
Starting with 90 detector modules consisting of about 27 kg of lithium-molybdate crystals, the detector will eventually be upgraded using 157 kg of crystals. Data-taking will last for more than five years.
The projected sensitivity covers the half-life of neutrinoless double beta decay of molybdenum-100 up to about 4$\times$10$^{26}$ years, corresponding to the effective Majorana mass of 18-31 meV.
DOI: https://doi.org/10.22323/1.441.0214
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