Aging study of Gd concentration in LAB-based Gd loaded liquid scintillator exposed to passivated stainless steel

Y. Hino, H. Furuta, F. Suekane

Research output: Contribution to journalArticle

Abstract

Stainless steel is a candidate of the inner surface of the storage container for LAB-based Gadolinium loaded liquid scintillator (Gd-LS) to be used in the JSNS2 neutrino detector. Aging effect on Gd concentration of Gd-LS was investigated with the Gd-LS sample stored in the passivated stainless steel bottle by two independent methods. The direct comparison of the neutron capture time measurement showed that there is no significant degradation of the capture time after 617 days aging. Titration was performed to measure Gd concentration, and the result after 466 days aging is consistent with the result before aging within the uncertainty of the measurement. Both results lead to a conclusion that stainless steel is usable for Gd-LS storage for JSNS2 experiment.

Original languageEnglish
Article numberP09007
JournalJournal of Instrumentation
Volume14
Issue number9
DOIs
Publication statusPublished - 2019 Sep 9

Keywords

  • Liquid detectors
  • Neutrino detectors
  • Noble liquid detectors (scintillation, ionization, double-phase)

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation

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