Beam Spot Size Measurement Technology and Application for D-T Neutron Source

被引：0

作者：

Zhang K. ^{[1
]}

Hou L. ^{[1
]}

Chen H. ^{[1
]}

Bao J. ^{[1
]}

Su M. ^{[2
]}

Ruan N. ^{[2
]}

Zhao F. ^{[1
]}

机构：

[1] Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing

[2] Institute of Special Materials, China Academy of Engineering Physics, Mianyang

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2020年 / 54卷 / 12期

关键词：

Associated particle imaging; Beam spot size measurement; D-T neutron source; Position sensitive detector;

D O I：

10.7538/yzk.2020.54.12.2289

中图分类号：

学科分类号：

摘要：

As a high-energy neutron source, the D-T neutron generator has been used in the active detection technology of special nuclear materials. The time coincidence method can be used to achieve multi-mode imaging of the measured object, and the beam spot size of the neutron source is a very important factor that affects the imaging position resolution. Therefore, combined with the characteristics of D-T reaction and practical application environment, a method for n-α correlation coincidence measurement to determine the beam spot size of neutron source was developed. This method was used to measure the beam spot size of a small mobile neutron generator. The beam spot size obtained is (2.8±0.9) mm, which is consistent with the measurement result of about 3 mm obtained by direct observation with CCD camera, which proves that this method is feasible. This method can also be used to assist D-T neutron source beam tuning and beam spot size monitoring in associated particle imaging experiments. © 2020, Editorial Board of Atomic Energy Science and Technology. All right reserved.

引用

页码：2289 / 2295

页数：6

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Datasheet: Hamamatsu tube assembly H13700

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