The COSINE-100 liquid scintillator veto system

Adhikari G.,de Souza E. Barbosa,Carlin N.,Choi J. J.,Choi S.,Djamal M.,Ezeribe A. C.,Franca L. E.,Ha C.,Hahn I. S.,Jeon E. J.,Jo J. H.,Kang W. G.,Kauer M.,Kim H.,Kim H. J.,Kim K. W.,Kim S. K.,Kim Y. D.,Kim Y. H.,Ko Y. J., Lee E. K.,Lee H. S.,Lee J.,Lee J. Y.,Lee M. H.,Lee S. H., Leonard D. S.,Manzato B. B.,Maruyama R. H., Neal R. J.,Olsen S. L., Park B. J.,Park H. K.,Park H. S.,Park K. S.,Pitta R. L. C.,Prihtiadi H., Ra S. J.,Rott C., Shin K. A.,Scarff A.,Spooner N. J. C.,Thompson W. G.,Yang L., Yu G. H.

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2021）

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摘要

This paper describes the liquid scintillator veto system for the COSINE-100 dark matter experiment and its performance. The COSINE-100 detector consists of eight NaI(Tl) crystals immersed in 2200 L of linear alkylbenzene-based liquid scintillator. The liquid scintillator tags between 65 and 75% of the internal 40K background in the 2–6 keV energy region. We also describe the background model for the liquid scintillator, which is primarily used to assess its energy calibration and threshold.

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关键词

Dark matter,Liquid scintillator,COSINE-100,LAB

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