The DCBA experiment for neutrinoless double beta decay
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ID: 272607
2008
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Abstract
Neutrinoless double beta decay experiment is the only realistic method to investigate the Majorana nature and the absolute mass scale of neutrinos. The DCBA (Drift Chamber Beta-ray Analyzer) experiment can separately detect electrons from other background particles in a uniform magnetic field. The kinetic energy of each electron is obtained from its momentum measurement. Therefore no energy calibration is required. The test prototype DCBA-T2 obtained the energy resolution of about 150 keV (FWHM) for 976 keV internal conversion electrons from 207Bi More improved prototype DCBA-T3 is now under construction. Its energy resolution is expected to be less than 100 keV (FWHM) according to the simulation study with Geant4. The future detector (temporarily called Magnetic Tracking Detector: MTD) enlarged from DCBA-T3 can investigate effective neutrino mass down to about 0.03 eV, if sufficient amount of 150Nd source is available.
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| Authors | N Ishihara,G Iwai,Y Kato,M Kawai,T Haruyama,T Inagaki,Y Makida,T Ohama,S Takeda,Y Yamada,S Kitamura,Tatsu Ishikawa,Taka Ishikawa,T Sakuma,T Sumiyoshi,E Tashiro,T Ishizuka,Y Teramoto,I Nakano,Y Sakamoto,Y Nagasaka,N Tamura,K Tanaka,R Ito;N Ishihara;G Iwai;Y Kato;M Kawai;T Haruyama;T Inagaki;Y Makida;T Ohama;S Takeda;Y Yamada;S Kitamura;Tatsu Ishikawa;Taka Ishikawa;T Sakuma;T Sumiyoshi;E Tashiro;T Ishizuka;Y Teramoto;I Nakano;Y Sakamoto;Y Nagasaka;N Tamura;K Tanaka;R Ito; |
| Journal | journal of physics: conference series |
| Year | 2008 |
| DOI |
10.1088/1742-6596/136/4/042050
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