Calibration of large neutron detection arrays using cosmic rays

K. Zhu,M.B. Tsang,D. Dell’Aquila,K.W. Brown,Z. Chajecki,W.G. Lynch, S. Sweany,F.C. E. Teh,C.Y. Tsang,C. Anderson,A. Anthony,J. Barney,J. Crosby, J. Estee,I. Gasparic,G. Jhang,O.B. Khanal, S. Kodali,J. Manfredi, C.Y. Niu, R.S. Wang

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（2020）

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摘要

Cosmic muons are used to calibrate the position, light output and the relative timing offset of the Large Area Neutron Array (LANA). Each 2×2m2 LANA wall consists of twenty-five horizontal neutron detection bars. Each bar is 2 m long with a cross-section of 6.35×7.62cm2 Pyrex container filled with NE-213 organic scintillation liquid. The average position and time resolution of a bar is found to be about 8 cm and 500 ps FWHM, respectively. Our method provides an accurate, fast and convenient calibration of LANA that can be applied to general scintillation arrays without the use of radioactive sources or beams.

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关键词

Neutron detector,Calibration,Cosmic rays,NE-213

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