The research of laser-based rapid measurement system for scintillator neutron detectors arrays

Tang, Bin; Yu, Qian; Huang, Chan; Teng, H.; Wang, Yanfeng; Xu, Hong; Liu, Yuntao; Qiu, Lin; Guo, Wei; Sun, Zhigang

doi:10.1007/s41605-020-00206-9

Cited by 6 publications

(12 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A 3 He counting tube (20 atm) is used as the primary comparison tool for testing the detection efficiency of the detector. The neutron detection efficiency of the detector to be tested at different neutron wavelengths can be obtained by normalizing the counting of the detector prototype with that of the 3 He tube.…”

Section: Detection Efficiencymentioning

confidence: 99%

“…It has been running steadily since March, 2018. [3] According to the construction plan of neutron instruments, the energy-resolved imaging spectrometer (ERNI) will be installed in 2022. ERNI is a combined facility of neutron imaging and neutron diffraction that can provide strong penetration, high resolution, and in-situ lossless imaging characterization.…”

Section: Introductionmentioning

confidence: 99%

“…The ERNI is based on Bragg-edge imaging, supplemented by conventional neutron imaging and neutron diffraction, with a neutron diffraction sensitivity area of larger than 4 m 2 and a sample-to-detector distance of 2 m. According to the physical design of the ERNI, the performance of the neutron detector must fulfill the parameters listed in Table 1. Owing to its high detection efficiency and steady performance, the 3 He tube is widely used in various neutron spectrometers. However, because of the shortage of 3 He gas, and consequently its high price, there is an urgent need to develop other types of neutron detectors to replace the 3 He tubes.…”

Section: Introductionmentioning

confidence: 99%

“…Owing to its high detection efficiency and steady performance, the 3 He tube is widely used in various neutron spectrometers. However, because of the shortage of 3 He gas, and consequently its high price, there is an urgent need to develop other types of neutron detectors to replace the 3 He tubes. [4,5] Scintillator neutron detectors have gradually replaced 3 He tubes in many neutron instruments because of their unique advantages including high detection efficiency, fast time response, good n/γ discrimination, and ease of fabrication in large areas, such as that of IMAT (ISIS), [6] TAKUMI (J-PARC), [7] POWGEN (SNS), [8] and EMD (CSNS).…”

Section: Introductionmentioning

confidence: 99%

“…But this large-area scintillator detector array has poor detection efficiency uniformity. [3] Although the MA-PMT has stable performance and high gain, it has some problems, such as poor uniformity of the gain between each working unit, high working voltage, large volume, and poor resistance to magnetic field interference. In recent years, SiPMs have attracted increasing attention owing to their high single-photon resolution, ease of integration, and low operating voltage.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Silicon photomultiplier based scintillator thermal neutron detector for China Spallation Neutron Source (CSNS)

et al. 2023

View full text Add to dashboard Cite

The Energy-Resolved Neutron Imaging spectrometer (ERNI) will be installed in 2022 according to the spectrometer construction plan of the China Spallation Neutron Source (CSNS). The instrument requires neutron detectors with the coverage area of approximately 4 m2 in 5°~170° neutron diffraction angle. The neutron detection efficiency needs to be better than 40% at 1 Å neutron wavelength. The spatial resolution should be better than 3 mm × 50 mm in the horizontal and vertical directions respectively. We developed a one-dimensional scintillator neutron detector which is composed of the 6LiF/ZnS (Ag) scintillation screens, the wavelength-shifting fiber (WLSF) array, the Silicon Photomultipliers (SiPMs), and the self-designed Application-Specific Integrated Circuit (ASIC) readout electronics. The pixel size of the detector is designed as 3 mm × 50 mm, and the neutron-sensitive area is 50 mm × 200 mm. The performance of the detector prototype was measured using neutron beam 20# of the CSNS. The maximum counting rate of 247 kHz, and the detection efficiency of 63% at 1.59 Å were obtained. The test results showed that the performance of the detector fulfill the physical requirements of the ERNI under construction at the CSNS.

show abstract

Section: Detection Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Silicon photomultiplier based scintillator thermal neutron detector for China Spallation Neutron Source (CSNS)

et al. 2023

View full text Add to dashboard Cite

show abstract

A prototype of the SiPM readout scintillator neutron detector for the engineering material diffractometer of CSNS

Tang

Huang

et al. 2022

Nuclear Engineering and Technology

View full text Add to dashboard Cite

Performance optimization of scintillator neutron detectors for EMD in CSNS

Cai

Huang

et al. 2023

Chinese Phys. B

View full text Add to dashboard Cite

Chinese Spallation Neutron Source (CSNS) has successfully produced its first neutron beam in 28th August 2017. It has been running steadily from March, 2018. According to the construction plan, the Engineering Materials diffractometer (EMD) will be installed between 2019- 2023. This instrument requires the neutron detectors with the cover area near 3m2 in two 90° neutron diffraction angle position, the neutron detect efficiency better than 40%@1Å, and the spatial resolution better than 4mm×200mm in horizontal and vertical directions respectively. We have developed an one-dimensional position sensitive neutron detector based on the oblique 6LiF/ZnS(Ag) scintillators, wavelength shifting fibers and SiPMs (Silicon Photomultipliers) readout. The inhomogeneity of the neutron detection efficiency between each pixel and each detector module, which caused by the inconsistency of the wave-length shifting fibers in collecting scintillation photons, need to be mitigated before the installation. A performance optimization experiment of the detector modules was carried out on the BL20 (Beam Line 20) of CSNS. Using water sample, the neutron beam with Φ5mm exit hole was dispersed relate evenly into the forward space. According to the neutron counts of each pixel of the detector module, the readout electronics threshold of each pixel is adjusted. Compared with the unadjusted detector module, the inhomogeneity of the detection efficiency for the adjusted one is improved from 69% to 90%. The test result of the diffraction peak of the standard sample Si showed that the adjusted detector module works well.

show abstract

The research of laser-based rapid measurement system for scintillator neutron detectors arrays

Cited by 6 publications

References 8 publications

Silicon photomultiplier based scintillator thermal neutron detector for China Spallation Neutron Source (CSNS)

Silicon photomultiplier based scintillator thermal neutron detector for China Spallation Neutron Source (CSNS)

A prototype of the SiPM readout scintillator neutron detector for the engineering material diffractometer of CSNS

Performance optimization of scintillator neutron detectors for EMD in CSNS

Contact Info

Product

Resources

About