Multi-layer scintillation detector for the MOON double beta decay experiment: Scintillation photon responses studied by a prototype detector MOON-1

Abstract

An ensemble of multi-layer scintillators is discussed as an option of the high-sensitivity detector Mo Observatory Of Neutrinos (MOON) for spectroscopic measurements of neutrino-less double beta decays. A prototype detector MOON-1, which consists of 6 layer plastic-scintillator plates, was built to study the sensitivity of the MOON-type detector. The scintillation photon collection and the energy resolution, which are key elements for the high-sensitivity experiments, are found to be 1835+/-30 photo-electrons for 976 keV electrons and sigma = 2.9+/-0.1% (dE/E = 6.8+/-0.3 % in FWHM) at the Qbb ~ 3 MeV region, respectively. The multi-layer plastic-scintillator structure with good energy resolution as well as good background suppression of beta-gamma rays is crucial for the MOON-type detector to achieve the inverted hierarchy neutrino mass sensitivity.

8 pages, 16 figures, submitted to Nucl.Instrum.Meth

References in corpus (8)

• Double Beta Decay
• CUORE: A Cryogenic Underground Observatory for Rare Events
• First results of the search of neutrinoless double beta decay with the NEMO 3 detector
• Neutrinoless double beta decay from a modern perspective
• Spectroscopy of Double-Beta and Inverse-Beta Decays from 100Mo for Neutrinos
• COBRA - Double beta decay searches using CdTe detectors
• Distinguishing the neutrinoless double beta decay mechanisms
• The Majorana Neutrinoless Double-Beta Decay Experiment

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• Theory of neutrinoless double beta decay
• Neutrinoless double beta decay and neutrino mass
• Neutrinoless double beta decay in seesaw models
• Solubility, Light Output and Energy Resolution Studies of Molybdenum-Loaded Liquid Scintillators