Simulation and design of a fast neutron radiography detector based on MCP

Ma, Zhixin; Li, W.-M.; Ran, Jun; Huang, Z.; Zhang, S.-J.; Li, K.-J.; Yao, Ze

doi:10.1088/1748-0221/13/05/p05034

Cited by 6 publications

(3 citation statements)

References 26 publications

(30 reference statements)

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“…The photons are then reflected by a reflection mirror, focused by a lens, and recorded by a CCD camera to provide an FNR image. In the developed detector, a 2 mm thick HDPE converter with a diameter of 76 mm is used to convert fast neutrons to recoil protons, with a conversion efficiency of 0.38% for 14 MeV fast neutron [15,16]. The HDPE is directly coupled with a V-stack dual MCPs, with a distance of approximately 0.1 mm between the HDPE and MCP.…”

Section: Jinst 18 T08004mentioning

confidence: 99%

Fast neutron radiography detector with polyethylene converter and MCP: development and performance evaluation

Bai

Liu

et al. 2023

J. Inst.

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We present a new position-sensitive fast neutron detector for 14 MeV fast neutron radiography, comprising a high-density polyethylene converter, a micro-channel plate (MCP), a P43 phosphor screen, a reflection mirror, and a CCD camera. Experimental tests are conducted using a DT neutron generator at CIAE, with different samples and a knife-edge measurement used to determine overall image resolution. Results show that the detector is feasible for fast neutron radiography, producing a fast neutron image with a neutron flux of ∼ 3.22 × 104 n · s-1 · cm-2 and 120 s exposure time. Our study demonstrates the potential of this detector for use in fast neutron radiography applications.

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Section: Jinst 18 T08004mentioning

confidence: 99%

Fast neutron radiography detector with polyethylene converter and MCP: development and performance evaluation

Bai

Liu

et al. 2023

J. Inst.

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“…These systems exhibit a contradiction between the detection efficiency and spatial resolution. Ma et al [12] used a 2 mm thick polyethylene plate coupled to an MCP to obtain images with a resolution of 500 µm at a 14MeV neutron beam. However, the detection efficiency of such device was only 0.14 %.…”

Section: Introductionmentioning

confidence: 99%

Design and Initial Tests of a Fast Neutron Radiography Detector Prototype with Sipm Readout

Chen,

Tang,

Chen

et al. 2024

Preprint

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Development of the fast neutron radiography with higher penetration capability in Non-Destructive Testing (NDT) techniques is rapidly. The detection efficiency and the imaging spatial resolution are the main problem of the radiography detector for many fast neutron imaging systems. In this paper, a detector composed of pixelated EJ200 scintillator array，an 16 × 16 silicon-photomultipliers (SiPM) array, and a capacitive multiplexing network readout electronics is designed. Using Monte-Carlo simulations，the main parameters of the detector was optimization. Then the detector prototype was fabricated and tested at a 14 MeV D-T neutron source. The preliminary test results showed that the prototype has spatial resolution of 1.26 mm. Using pixelated scintillator structure，the conflict between spatial resolution and detect efficiency could improved. Moreover, SiPMs offer a flexibility for the expansion of application field of the imaging system due to their excellent photon detection performance, relatively low price and joint possibility for large area.

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“…These systems exhibit a contradiction between detection efficiency and spatial resolution. Ma et al [12] used a 2 mm thick polyethylene plate coupled to an MCP to obtain images with a resolution of 500 µm under a 14 MeV neutron beam. However, the detection efficiency of this device was only 0.14%.…”

Section: Introductionmentioning

confidence: 99%

Design and Initial Tests of a Fast Neutron Radiography Detector Prototype with Silicon Photomultiplier Readouts

Chen,

Tang,

Chen

et al. 2024

Applied Sciences

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Among non-destructive testing (NDT) techniques, fast neutron radiography with a higher penetration capability has achieved rapid advancements. However, the application of the radiography detector in many fast neutron imaging systems is limited by unfavorable detection efficiency and imaging spatial resolution. In this paper, a fast neutron radiography detector was designed, which was composed of a pixelated EJ200 scintillator array, a 16 × 16 silicon photomultiplier (SiPM) array, and capacitive multiplexing network readout electronics. The main parameters of the detector were optimized using Monte Carlo simulations. In addition, the prototype of the detector was fabricated and tested under a 14 MeV D-T neutron source. The preliminary test results demonstrated that the spatial resolution of the prototype reached 1.2 mm. Moreover, the conflict between spatial resolution and detection efficiency could be mitigated by using a pixelated scintillator structure. Overall, SiPMs enabled the extensive application of the imaging system because of their excellent photon detection performance, relatively low price, and joint possibility for large areas.

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Simulation and design of a fast neutron radiography detector based on MCP

Cited by 6 publications

References 26 publications

Fast neutron radiography detector with polyethylene converter and MCP: development and performance evaluation

Fast neutron radiography detector with polyethylene converter and MCP: development and performance evaluation

Design and Initial Tests of a Fast Neutron Radiography Detector Prototype with Sipm Readout

Design and Initial Tests of a Fast Neutron Radiography Detector Prototype with Silicon Photomultiplier Readouts

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