Data acquisition system of CANDLES detector for double beta decay experiment

Author

Umehara, S. ; Nomachi, M. ; Sugaya, Y. ; Saka, M. ; Seki, K. ; Ito, G. ; Ajimura, S. ; Tamagawa, Y.

Author_Institution

Res. Center for Nucl. Phys., Osaka Univ., Ibaraki, Japan

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

2091

Lastpage

2094

Abstract

The observation of neutrino-less double beta decay (0νββ) will prove existence of a massive Majorana neutrino. For a sensitive measurement of the neutrino mass, we have developed a new detector system CANDLES, which features CaF₂(pure) scintillators. The CANDLES system needs a low background measurement because 0νββ is a very rare decay. In order to reach the low background measurement, we introduced characteristic flash ADCs in the system. Besides the flash ADC, we developed a trigger system for the CaF₂(pure) events. Signal processing for the data readout and trigger is in a FPGA. In this paper, we present the data acquisition system including the characteristic flash ADC and the trigger system for the CANDLES system.

Keywords

analogue-digital conversion; data acquisition; double beta decay; liquid scintillation detectors; neutrino mass; nuclear electronics; readout electronics; trigger circuits; CANDLES detector; CaF₂ scintillator detector; FPGA; data acquisition system; data readout system; flash ADC characteristics; low background measurement method; massive Majorana neutrino; neutrino mass measurement; neutrino-less double beta decay experiment; signal processing; trigger system; Logic gates;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154425

Filename

6154425