Production and optical properties of Gd-loaded liquid scintillator for the RENO neutrino detector

J. S. Park, J. Lee, I. S. Yeo, W. Q. Choi, J. K. Ahn, J. H. Choi, S. Choi, Y. Choi, H. I. Jang, J. S. Jang, E. J. Jeon, K. K. Joo, B. R. Kim, H. S. Kim, J. Y. Kim, S. B. Kim, S. Y. Kim, W. Kim, Y. D. Kim, J. H. LeeJ. K. Lee, I. T. Lim, K. J. Ma, M. Y. Pac, I. G. Park, K. S. Park, K. Siyeon, S. H. So, S. S. Stepanyan, I. Yu

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Reactor experiment for neutrino oscillation (RENO) began data-taking from August 2011. It successfully observed reactor antineutrino disappearance in April 2012 to measure the smallest mixing angle of θ13. Two identical detectors, one at near location and the other at far location, are constructed at the Yonggwang nuclear power plant in South Korea, to compare the observed reactor neutrino fluxes. Each RENO detector is filled with 16 mass tons of Gadolinium loaded liquid scintillator (GdLS) in the neutrino target region, and with 28 mass tons of unloaded liquid scintillator (LS) in the γ-catcher region surrounding the target. LS was developed to satisfy chemical, physical, optical properties, and safety requirements. Linear alkyl benzene (LAB) was chosen as a solvent because of its high flash-point, sufficient light yield, and being environmentally friendly. GdLS is carefully developed to keep a long attenuation length and high light yield for a long time period. In this paper, we report the characteristics and mass production of the RENO LS and GdLS.

Original languageEnglish
Pages (from-to)45-53
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume707
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Gadolinium-loaded liquid scintillator (GdLS)
  • LAB
  • Neutrino oscillation
  • RENO
  • Reactor neutrino experiment
  • θ

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Park, J. S., Lee, J., Yeo, I. S., Choi, W. Q., Ahn, J. K., Choi, J. H., Choi, S., Choi, Y., Jang, H. I., Jang, J. S., Jeon, E. J., Joo, K. K., Kim, B. R., Kim, H. S., Kim, J. Y., Kim, S. B., Kim, S. Y., Kim, W., Kim, Y. D., ... Yu, I. (2013). Production and optical properties of Gd-loaded liquid scintillator for the RENO neutrino detector. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 707, 45-53. https://doi.org/10.1016/j.nima.2012.12.121