Air gap effect on the properties of a long liquid scintillation detector

S. Matsuyama, D. Soda, M. Baba, S. Iwasaki, M. Ibaraki, T. Ohkubo, Y. Nauchi, N. Hirakawa

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Light attenuation, n-γ pulse shape discrimination and timing properties of a long liquid scintillation detector (LLSD) were examined by means of Monte Carlo simulations and experiments. LLSD is a long rectangular shaped NE213 scintillator (80 × 6.5 × 10 cm3) coupled with two photomultipliers and has been developed for neutron scattering experiments. We found that an air gap between a photomultiplier and a scintillator cell worked as a filter and reduced position dependencies of pulse height and of n-γ pulse shape discrimination which were disadvantages on the use of LLSD, whereas it deteriorated n-γ separation. This paper discusses the advantages and disadvantages of the air gap to the detector properties.

Original languageEnglish
Pages (from-to)439-443
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
Publication statusPublished - 1997 Jan 1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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