In-Situ Measurement of Relative Attenuation Length of Gadolinium-Loaded Liquid Scintillator Using Source Data at RENO Experiment
H.S. Kim, S.Y. Kim, J.H. Choi, W.Q. Choi, Y. Choi, H.I. Jang, J.S., Jang, K.K. Joo, B.R. Kim, J.Y. Kim, S.B. Kim, W. Kim, E. Kwon, D.H. Lee, I.T., Lim, M.Y. Pac, I.G. Park, J.S. Park, R.G. Park, H. Seo, S.H. Seo, Y.G. Seon,, C.D. Shin, I.S. Yeo, I. Yu (RENO Collaboration)
TL;DR
This paper reports in situ measurements of the decreasing attenuation length of gadolinium-loaded liquid scintillator in RENO detectors over four years, highlighting the importance of monitoring optical properties for neutrino experiments.
Contribution
It provides the first in situ measurement of the relative attenuation length of Gd-LS in RENO, revealing a significant decrease over time.
Findings
Attenuation length decreased by 50% over four years
In situ calibration effectively monitors optical property changes
Results impact long-term neutrino detector performance
Abstract
We present in situ measurements of the relative attenuation length of the gadolinium loaded liquid scintillator in the RENO (Reactor Experiment Neutrino Oscillation) detectors using radioactive source calibration data. We observed a steady decrease in the attenuation length of the Gd-LS in the RENO detectors by 50% in about four years since the commissioning of the detectors.
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Taxonomy
TopicsNeutrino Physics Research · Radiation Detection and Scintillator Technologies · Astrophysics and Cosmic Phenomena