Data acquisition system of CANDLES detector for double beta decay experiment

Saori Umehara,M Nomachi,Y Sugaya,M Saka,Koichi Seki,Go Ito,S Ajimura,Yoichi Tamagawa

Nuclear Science Symposium and Medical Imaging Conference（2011）

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摘要

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.

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关键词

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 gate,logic gates

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