1. Development and Mass Production of a Mixture of LAB- and DIN-based Gadolinium-loaded Liquid Scintillator for the NEOS Short-baseline Neutrino Experiment
- Author
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Kim, Ba Ro, Han, Boyoung, Jeon, Eun-ju, Joo, Kyung Kwang, Kim, H. J., Kim, Hyunsoo, Kim, Jinyu, Kim, Yeongduk, Ko, Youngju, Lee, Jaison, Lee, Jooyoung, Lee, Moohyun, Ma, Kyungju, Oh, Yoomin, Park, Hyangkyu, Park, Kang-soon, Seo, Kyungmin, Seon, Gwang-Min, and Siyeon, Kim
- Subjects
Physics - Instrumentation and Detectors ,High Energy Physics - Experiment - Abstract
A new experiment, which is called as NEOS (NEutrino Oscillation at Short baseline), is proposed on the site of Hanbit reactors at Yonggwang, South Korea, to investigate a reactor antineutrino anomaly. A homogeneous NEOS detector having a 1000-L target volume has been constructed and deployed at the tendon gallery ~25 m away from the reactor core. A linear alkylbenzene (LAB) is used as a main base solvent of the NEOS detector. Furthermore, a di-isopropylnaphthalene (DIN) is added to improve the light output and pulse shape discrimination (PSD) ability. The ratio of LAB to DIN is 90:10. PPO (3 g/L) and bis-MSB (30 mg/L) are dissolved to formulate the mixture of LAB- and DIN-based liquid scintillator (LS). Then, ~0.5% gadolinium (Gd) is loaded into the LS by using the solvent-solvent extraction technique. In this paper, we report the characteristics of Gd-loaded LS (GdLS) for the NEOS detector and the handling during mass production.
- Published
- 2015