The CANDLES Trigger System for the Study of Double Beta Decay of 48Ca

被引：0

作者：

Maeda, T. ^{[1
]}

Ajimura, S. ^{[2
]}

Ichimura, K. ^{[3
]}

Ishikawa, T. ^{[1
]}

Nomachi, M. ^{[2
]}

Ogawa, I. ^{[4
]}

Saka, M. ^{[1
]}

Seki, K. ^{[1
]}

Sugaya, Y. ^{[2
]}

Suzuki, K. ^{[1
]}

Umehara, S. ^{[2
]}

机构：

[1] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka, Japan

[2] Osaka Univ, Nucl Phys Res Ctr, Ibaraki, Osaka, Japan

[3] Univ Tokyo, Inst Cosm Ray Res, Kamioka Observ, Kamioka, Gifu, Japan

[4] Univ Fukui, Grad Sch Engn, Fukui, Fukui, Japan

来源：

2014 19TH IEEE-NPSS REAL TIME CONFERENCE (RT) | 2014年

关键词：

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The CANDLES trigger system is used for the study of Double Beta Decay of Ca-48. The detector of this experiment consists of CaF2 crystals as the sources and the detectors, immersed in the liquid scintillator as a 4 pi active shield. Because the decay constant of liquid scintillator (similar to a few 10ns) is a few ten times shorter than that of CaF2 scintillator (similar to 1 mu s), if we trigger the signal by the pulse height, the energy threshold of liquid scintillator lights are a few ten times lower than CaF2's one. High counting rate of the liquid scintillator causes dead time. In order to avoid this problem, we have developed a Dual Gate Trigger. In this paper, we describe the trigger system of the CANDLES experiment and its performance.

引用

页数：4

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