Huiyin LIU, Jie YANG, Chang HUANG, Bin TANG, Shihui ZHOU, Xiaojie CAI, Xiuku WANG, Lixin ZENG, Xiuping YUE, Shaojia CHEN, Hong XU, Dawei GUO, Xu CHEN, Zhijia SUN. Development of the high-resolution neutron scintillator detector for the very small-angle neutron scattering spectrometer[J]. NUCLEAR TECHNIQUES, 2024, 47(2): 020401
- NUCLEAR TECHNIQUES
- Vol. 47, Issue 2, 020401 (2024)
Fig. 1. Schematic of VSANS spectrometer's layout
Fig. 2. Schematics of the detector's head (a) and mechanical structure (b)
Fig. 3. Movable platform for the optical test
Fig. 4. Plot of the optical attenuation length
Fig. 5. Principle diagram of WLSF's mechanical bending loss test
Fig. 6. Spectral comparison diagrams before and after mechanical bending (in air)
Fig. 7. Principle diagram of the SiPM's gain test
Fig. 8. Charge spectrum of the SiPM
Fig. 9. Plot of SiPM's gain test results
Fig. 10. Plots of SiPM's thermal noise test results (a) The variation of Hamamatsu's SiPM output signal with increasing temperature, (b) The variation of Sensl's SiPM output signal with increasing temperature
Fig. 11. Snapshot of the detector prototype
Fig. 12. Photo self-developed readout electronics boards
Fig. 13. Schematic diagram of the detection efficiency experiment
Fig. 14. Snapshot of boron-containing aluminum plate with "CSNS" slits
Fig. 15. Comparison plot of the neutron wavelength spectra
Fig. 16. Plot of the detection efficiency test results
Fig. 17. Plot of the two-dimensional imaging test result
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Table 1. Key performance parameters of the SiPM
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Table 2. Parameters of key components
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