Ke WANG, Haisheng SONG, Fang FANG, Yuhong YU, Shuwen TANG, Xiangman LIU, Zhiyu SUN, Peng MA, Herun YANG, Shitao WANG, Xueheng ZHANG, Duo YAN, Yongjie ZHANG. Anti-coincidence detector unit based on WLS fiber and SiPM readout[J]. NUCLEAR TECHNIQUES, 2023, 46(7): 070401
- NUCLEAR TECHNIQUES
- Vol. 46, Issue 7, 070401 (2023)
Fig. 1. Detection efficiency of 5 different positions of the original 5 mm thickness Veto detector unit strip under different voltages
Fig. 2. Schematic diagram of embedding 15 WLSs in Veto detector and read out by SiPM
Fig. 3. Experimental setup for testing SiPM single-photon resolution of LED systems
Fig. 4. Single photoelectron charge spectrum of SiPM illuminated by LED
Fig. 5. Linear relationship between the number of SiPM photons and ADC channels number
Fig. 6. Physical snapshot of the multiwire proportional chamber test platform
Fig. 7. Electronics test block diagram
Fig. 8. Time difference spectrum at both ends of MWPC1 (a), spectrum calculated after differential and absolute value of the time difference spectrum at both ends of MWPC1 (b), position spectrum of MWPC1 after T-P relationship transformation in X direction (c)
Fig. 9. Schematic diagram of the vertical distance from Z=0 to each layer of silk surface
Fig. 10. The straight line fitted by the three position points on the XOZ plane and the effective diameter that meets the conditions
Fig. 11. Charge-magnitude spectra of veto detectors embedded in seven WLS fibers (color online)
Fig. 12. Center of 15 and 7 WLS Veto detectors is divided into 5 mm×5 mm grids, and the detection efficiency of each grid
Fig. 13. Detection efficiency of different types of Veto detectors at different positions
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Table 1. Wave length shifter fiber (WLS) parameters
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Table 2. Silicon photomultiplier parameters
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Table 3. Magnification test
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