Evaluation of the performance of event reconstruction algorithms in the JSNS2 experiment using a 252 Cf calibration source

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초록

JSNS2 investigates short-baseline neutrino oscillations using a 24-meter baseline and a 17-tonne Gd-loaded liquid scintillator target. Accurate event-reconstruction algorithms are crucial for analyzing experimental data. The algorithms undergo meticulous validation through calibration with a 252 Cf source. This paper outlines the methodology and evaluates the reconstruction performance, focusing on neutrino interactions up to approximately 50 MeV for sterile neutrino searches. Both 252 Cf and Michel electron events are studied to evaluate reconstruction accuracy. The analysis concludes that the uncertainty of the fiducial volume, with an appropriate correction, is much less than the requirement of JSNS2 requirement (10%). Furthermore, the energy resolution is measured to be 3.3 +/- 0.1% for the Michel electron endpoint and 4.3 +/- 0.1% for the n-Gd peak in the central region.

키워드

Sterile neutrinoNeutrino source from decay at restLiquid scintillatorCalibrations with (252) cf source
제목
Evaluation of the performance of event reconstruction algorithms in the JSNS2 experiment using a 252 Cf calibration source
저자
Lee, D. H.Cheoun, M. K.Choi, J. H.Choi, J. Y.Dodo, T.Goh, J.Haga, K.Harada, M.Hasegawa, S.Hwang, W.Iida, T.Jang, H. I.Jang, J. S.Joo, K. K.Jung, D. E.Kang, S. K.Kasugai, Y.Kawasaki, T.Kim, E. J.Kim, J. Y.Kim, S. B.Kim, W.Kinoshita, H.Konno, T.Lim, I. T.Little, C.Maruyama, T.Marzec, E.Masuda, S.Meigo, S.Moon, D. H.Nakano, T.Niiyama, M.Nishikawa, K.Pac, M. Y.Park, H. W.Park, J. S.Park, R. G.Peeters, S. J. M.Rott, C.Sakai, K.Sakamoto, S.Shima, T.Shin, C. D.Spitz, J.Suekane, F.Sugaya, Y.Suzuya, K.Takeuchi, Y.Yamaguchi, Y.Yeh, M.Yeo, I. S.Yoo, C.Yu, I.
DOI
10.1016/j.nima.2025.170216
발행일
2025-03
유형
Article
저널명
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
1072