Neutronics performance and activation calculation of dense tungsten granular target for China-ADS

doi:10.1016/j.nimb.2017.08.003

	Neutronics performance and activation calculation of dense tungsten granular target for China-ADS
	Yan, Xuesong; Cai, Hanjie; Zhang, Zhilei; Gao, Xiaofei; Zhang, Yaling; Li, Jianyang; Zhang, Xunchao; Zhang, Yanshi; Lin, Ping; Fu, Fen
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
	2017-11-01
卷号	410 页码:88-101
关键词	Neutronics Dense granular target Radiation damage Activity
ISSN号	0168-583X
DOI	10.1016/j.nimb.2017.08.003
英文摘要	Spallation target, which constitutes the physical and functional interface between the high power accelerator and the subcritical core, is one of the most important components in Accelerator Driven Subcritical System (ADS). In this paper, we investigated the neutronics performance, the radiation damage and the activation of dense tungsten granular flow spallation target by using the Monte Carlo programs GMT and FLUKA at the proton energy of 250 MeV with a beam current of 10 mA. First, the leaking neutron yield, leaking neutron energy spectrum and laterally leaking neutron distribution at several time nodes and with different target parameters are explored. After that, the displacement per atom (DPA) and the helium/hydrogen production for tungsten grains and structural materials with stainless steel 316L are estimated. Finally, the radioactivity, residual dose rate and afterheat of granular target are presented. Results indicate that granule diameter below 1 cm and the beam profile diameter have negligible impact on neutronics performance, while the target diameter and volume fraction of grain have notable influence. The maximum DPA for target vessel (beam tube) is about 1.0 (1.6) DPA/year in bare target, and increased to 2.6 (2.8) DPA/year in fission environment. Average DPA for tungsten grains is relatively low. The decline rate of radioactivity and afterheat with cooling time grows with the decrease of the irradiation time. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA03030100] ; National Natural Science Foundation of China[11605264]
WOS关键词	ACCELERATOR-DRIVEN SYSTEM ; RESEARCH-AND-DEVELOPMENT ; SPALLATION TARGET ; CROSS-SECTIONS ; HOPPER FLOWS ; DESIGN ; YIELDS
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000413133100012
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45860]
专题	近代物理研究所_实验物理中心
通讯作者	Yang, Lei
作者单位	Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yan, Xuesong,Cai, Hanjie,Zhang, Zhilei,et al. Neutronics performance and activation calculation of dense tungsten granular target for China-ADS[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2017,410:88-101.
APA	Yan, Xuesong.,Cai, Hanjie.,Zhang, Zhilei.,Gao, Xiaofei.,Zhang, Yaling.,...&Yang, Lei.(2017).Neutronics performance and activation calculation of dense tungsten granular target for China-ADS.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,410,88-101.
MLA	Yan, Xuesong,et al."Neutronics performance and activation calculation of dense tungsten granular target for China-ADS".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 410(2017):88-101.