The AMoRE (Advanced Mo-based Rare process Experiment) collaboration is using calcium molybdate (dep48Ca 100MoO4) crystals enriched in 100Mo and depleted in 48Ca to search for neutrinoless double-beta decay (DBD) of 100Mo using at the underground laboratory in Korea. Metallic magnetic calorimeters operating a milliKelvin temperatures are used as temperature sensors to measure heat and light signals from the crystals. The simultaneous and fast detection capabilities for both phonons and photons, and their excellent energy resolution provide powerful methods for identifying DBD signals and rejecting background events, which are mainly due to random coincidences between two uncorrelated two-neutrino-double-beta decays of 100Mo. The AMoRE-Pilot experiment that is currently underway uses a 1.5 kg, five-element array of dep48Ca 100MoO4 crystals. The ultimate goal is a ∼200 kg array of crystals and a half-life sensitivity of order 1026 years, which will access the inverted hierarchy region for effective Majorana neutrino masses, i.e., 0.02 to 0.05 eV. In this talk, we present recent progress on the development of low-background calcium molybdate detectors and results from room- and milli-Kelvin temperatures. Sensitivities based on GEANT4 simulations that incorporate measured background are reported.
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28 October 2015
WORKSHOP ON CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS (MEDEX’15)
9–12 June 2015
Prague, Czech Republic
Research Article|
October 28 2015
The AMoRE: Search for neutrinoless double beta decay of 100Mo
HyangKyu Park;
HyangKyu Park
a)
1Center for Underground Physics,
Institute for Basic Science (IBS)
, Daejeon 305-811, Korea
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on behalf of the AMoRE collaboration
on behalf of the AMoRE collaboration
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a)
Corresponding author: hkpark@ibs.re.kr URL: http://cupweb.ibs.re.kr
AIP Conf. Proc. 1686, 020016 (2015)
Citation
HyangKyu Park; on behalf of the AMoRE collaboration, The AMoRE: Search for neutrinoless double beta decay of 100Mo. AIP Conf. Proc. 28 October 2015; 1686 (1): 020016. https://doi.org/10.1063/1.4934905
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