The CANDLES trigger system for the study of Double Beta Decay of 48Ca

T. Maeda, S. Ajimura, K. Ichimura, T. Ishikawa, M. Nomachi, I. Ogawa, M. Saka, K. Seki, Y. Sugaya, K. Suzuki, S. Umehara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The CANDLES trigger system is used for the study of Double Beta Decay of 48Ca. The detector of this experiment consists of CaF2 crystals as the sources and the detectors, immersed in the liquid scintillator as a 4π active shield. Because the decay constant of liquid scintillator (∼a few10ns) is a few ten times shorter than that of CaF2 scintillator (∼1μs), 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.

Original languageEnglish
Title of host publication2014 19th IEEE-NPSS Real Time Conference, RT 2014 - Conference Records
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479936595
DOIs
Publication statusPublished - 2014
Externally publishedYes
Event2014 19th IEEE-NPSS Real Time Conference, RT 2014 - Nara, Japan
Duration: 2014 May 262014 May 30

Publication series

Name2014 19th IEEE-NPSS Real Time Conference, RT 2014 - Conference Records

Conference

Conference2014 19th IEEE-NPSS Real Time Conference, RT 2014
CountryJapan
CityNara
Period14/5/2614/5/30

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Networks and Communications
  • Software
  • Electrical and Electronic Engineering
  • Information Systems

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