TEST OF THE UNACTIVATED CALCIUM FLUORIDE CRYSTAL FOR USE AS A SCINTILLATION DETECTOR IN Ca48 DOUBLE BETA DECAY EXPERIMENT

1989 ◽  
Vol 04 (03) ◽  
pp. 213-216 ◽  
Author(s):  
WEIHUA TIAN ◽  
KE YOU ◽  
YUCAN ZHU ◽  
WENHENG ZHAO ◽  
ZHIPENG ZHENG ◽  
...  
Keyword(s):  
Beta Decay ◽  
Energy Resolution ◽  
Gamma Rays ◽  
Particle Energy ◽  
Double Beta Decay ◽  
Test Results ◽  
Energy Response ◽  
Scintillation Crystal ◽  
Response Range ◽  
Double Beta Decay Experiment

The test results of the properties of the unactivated CaF 2 scintillation crystal detector is reported. The energy response of a small size CaF 2 crystal and a large CaF 2 crystal detector, which will be used in the Ca 48 Double Beta Decay (DBD) experiment, to gamma rays and an electron beam from 6 to 10 MeV was tested. The results indicate that the linear energy response range can be extended to 10 MeV for the large CaF 2 detector. Meanwhile, the relation of the energy resolution to the incident particle energy is represented by E−1/2 (MeV) . (It is anticipated that the energy resolution at 4.27 MeV will be about 9%.)

scholarly journals Status of the R2D2 project: A future neutrinoless double beta decay experiment

2021 ◽  
Vol 2105 (1) ◽  
pp. 012016
Author(s):  
Ioannis Katsioulas
Keyword(s):  
High Pressure ◽  
Beta Decay ◽  
Energy Resolution ◽  
Experimental Approach ◽  
Neutrinoless Double Beta Decay ◽  
Large Mass ◽  
Double Beta Decay ◽  
Majorana Particle ◽  
Excellent Energy Resolution ◽  
Double Beta Decay Experiment

Abstract The nature of the neutrino is a central questions in physics. The search for neutrinoless double beta decay is the most sensitive experimental approach to demonstrate that the neutrino is a Majorana particle. Observation of such a rare process demands a detector with an excellent energy resolution, extremely low background, and a large mass of a double beta decaying isotope. R2D2 aims to develop a novel spherical high-pressure TPC that meets all the above requirements. As a first step, the energy resolution of the R2D2 prototype was measured. A 1.1% (FWHM) energy resolution was achieved for 5.3 MeV α-particles in Ar:CH4 at pressure up to 1.1 bar. This is a major milestone for R2D2 and paves the way for further studies with Xe gas and the possible use of this technology for neutrinoless double beta decay searches.

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