Edge-Cooling Target Structure for Transportable Accelerator-Driven Neutron Source

被引：0

作者：

Li X. ^{[1
]}

Hu Y. ^{[1
]}

Fan J. ^{[1
]}

Li J. ^{[1
]}

Qiao Z. ^{[1
]}

Xie Y. ^{[1
]}

Ma B. ^{[1
]}

Lu Y. ^{[1
]}

Liu Y. ^{[2
]}

Li W. ^{[2
]}

Wang S. ^{[1
]}

机构：

[1] School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an

[2] Comprehensive Research Department of Nuclear Technology, China Institute Atom Energy, Beijing

来源：

Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 06期

关键词：

cdgc-cooling target structure; lithium target; neutron attenuation; transportable accelerator-driven neutron source;

D O I：

10.7652/xjtuxb202306018

中图分类号：

学科分类号：

摘要：

To solve the problem of emitted neutron attenuation of lithium target of the transportable accelerator-driven neutron source (TANS), the cdgc-cooling target structure in which the cooling water circulates through a channel along the side of substrate, was proposed, and its performance was studied such as irradiation damage, cooling effect, and quality of emitted neutron. Vanadium interlayer was introduced in the target structure, and proton effect on target structural materials was tentatively analyzed from perspectives of hydrogen diffusion and irradiation damage. Based on the software using finite element method, COMSOL Multiphysics, conjugate heat transfer models under proton beams with different distributions were built for the evaluation of lithium target temperature. The accuracy of simulation result was verified by cooling experiment. The neutron yields of target structures in forward direction were compared according to calculation using the Monte Carlo method. And the induced radioactivity of edge-cooling target structure was evaluated. The results showed that the vanadium intcrlaycr could effectively promote the process of hydrogen diffusion and absorption, and reduce the influence of hydrogen cmbrit-tlcmcnt on copper substrate. The maximum temperature of lithium target under 250 W proton beam in Gaussian distribution with a radius greater than 0. 75 cm was predicted to be below 140 °C for edge-cooling target structure, and simulation results were more conservative than the experimental results. The edge-cooling target structure had a less reduction on neutron yield in forward direction, and the advantage was about 10%. On the basis of efficient cooling, the edge-cooling target structure can increase the neutron yield in forward direction, and has the ability of long life and reliable operation on TANS. Meanwhile, this study can provide reference for the related research of target structure. © 2023 Xi'an Jiaotong University. All rights reserved.

引用

页码：160 / 171

页数：11

共 46 条

[1] OTAKE Y, SEKI Y, WAKABAYASHI Y, Et al., Research and development of a non-destructive inspection technique with a compact neutron source, Journal of Disaster Research, 12, 3, pp. 585-592, (2007)
[2] BANHART J., Advanced tomographic methods in materials research and engineering, (2008)
[3] VONTOBEL P, LEHMANN E, CARLSON W D., Comparison of X-ray and neutron tomography investigations of geological materials, IEEE Transactions on Nuclear Science, 52, 1, pp. 338-341, (2005)
[4] CHEN Hongtao, ZHAO Fang, LIU Shilong, Et al., Development of mobile neutron generator, Annual Report of China Institute of Atomic Energy, (2013)
[5] STROBE M, MANKE I, KARDJILOV N, Et al., Advances in neutron radiography and tomography [J], Journal of Physics: D Applied Physics, 42, 24, (2009)
[6] EL ABD A, KICHANOV S E, TAMAN M, Et al., Determination of moisture distributions in porous building bricks by neutron radiography, Applied Radiation and Isotopes, 156, (2020)
[7] KANEMATSU M, MARUYAMA I, NOGUCHI T, Et al., Quantification of water penetration into concrete through cracks by neutron radiography, Nuclear Instruments and Methods in Physics Research: Section A Accelerators, Spectrometers, Detectors and Associated Equipment, 605, 1, pp. 154-158, (2009)
[8] IKEDA Y, OTAKE Y, MIZUTA M., Nondestructive measurement method to detect water/void inside slabs using compact neutron source by backscattered neutrons, Journal of Advanced Concrete Technology, 15, 10, pp. 603-609, (2017)
[9] IKEDA Y, OTAKE Y, MIZUTA M., Nondestructive measurement for water and voids in concrete with compact neutron source [J], Plasma and Fusion Research, 13, (2018)
[10] ZHANG Peng, LIU Zhaolin, WANG Yu, Et al., 3D neutron tomography of steel reinforcement corrosion in cement-based composites, Construction and Building Materials, 162, pp. 561-565, (2018)

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