Preliminary performance test of tubular neutron detector based on SiPM signal readout

Yun Liu; Bin Tang; Chong Wu; Chang Huang; Zhi-jia Sun; Yan-chao Zhang; Chun-dan Lin

doi:10.1117/12.2524696

10 May 2019 Preliminary performance test of tubular neutron detector based on SiPM signal readout

Yun Liu, Bin Tang, Chong Wu, Chang Huang, Zhi-jia Sun, Yan-chao Zhang, Chun-dan Lin

Proceedings Volume 11068, Second Symposium on Novel Technology of X-Ray Imaging; 110682C (2019) https://doi.org/10.1117/12.2524696
Event: Second Symposium on Novel Technology of X-Ray Imaging, 2018, Hefei, China

Abstract

Due to the shortage and the rapidly increasing price of the ³He gas, seeking new types of position-sensitive neutron detectors is urgent. In order to fulfill the requirements of Chinese neutron spectrometers for neutron detectors, the research on neutron detector based on ⁶LiF/ZnS (Ag) scintillator and wavelength-shifting fiber (WLSF) structure neutron detectors was developed. It has the advantages of high neutron detection efficiency, good position resolution and the ability to splicing large areas. This paper proposed a tubular neutron detector structure. It consists of two layers of rolled ⁶LiF/ZnS(Ag) scintillators sandwich with two wavelength-shifting fibers, and two SiPMs (Silicon photomultipliers) for the photons readout. By MC simulation, we obtained the thermal neutron conversion efficiency of ⁶LiF/ZnS(Ag) scintillation screens with different thicknesses and rolled diameters, and optimized the detector structure. The characteristics of the key components are studied. A small detector prototype has been constructed. and been tested by the neutron beam. The preliminary test results showed that the detector can work well.

Citation Download Citation

Yun Liu, Bin Tang, Chong Wu, Chang Huang, Zhi-jia Sun, Yan-chao Zhang, and Chun-dan Lin "Preliminary performance test of tubular neutron detector based on SiPM signal readout", Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 110682C (10 May 2019); https://doi.org/10.1117/12.2524696

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KEYWORDS

Sensors

Scintillators

Signal attenuation

Signal detection

Silver

Scintillation

Aluminum

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