Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system

doi:10.1016/j.fusengdes.2021.112482

	Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system
	Wei, Jianglong 1; Zhang, Zhaoyuan 1,2; Yi, Wei 1; Tao, Ling 1; Liang, Lizhen 1; Xie, Yuanlai 1; Hu, Chundong 1
刊名	FUSION ENGINEERING AND DESIGN
	2021-08-01
卷号	169
关键词	Neutral beam injection Neutralizer Thermo-mechanical analysis Finite elements analysis
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2021.112482
通讯作者	Wei, Jianglong(jlwei@ipp.ac.cn)
英文摘要	The Comprehensive Research fAcility for Fusion Technology (CRAFT) has been launched in China and a negative ion-based neutral beam injection system (NNBI) is an important component of CRAFT. The primary target of the CRAFT NNBI is to realize a neutral hydrogen beam of >2 MW at the beam energy of 400 keV for the pulse duration of 100 s. In the CRAFT NNBI, the neutralization of the negative ion beam will be accomplished in a gas neutralizer mainly consisting of two vertical channels. Each channel has a rectangular cross-section of 0.145 m x 1.7 m and a length of 3 m, which is formed by several copper panels. A key issue of the neutralizer is to remove the heat load from the incident ion beam. This paper presents the thermo-mechanical design process of the neutralizer of the CRAFT NNBI. Because the heat load densities on the lateral walls of the panels are relatively low, their surface temperature can be well controlled under the safe values of copper by deep drilling of the cooling channels. The largest problem is the leading edge of the panels, where the heat load density is extremely high. Thus, the leading edge element (LEE) is carefully designed to avoid damage to these panels. The LEE is made of CuCrZr alloy and the twisted tape is inserted into the cooling channel to promote the turbulence and consequently the heat transfer capability. Finally, the thermo-mechanical properties of the heat load components of the neutralizer can be controlled under the required values in terms of the surface temperature, water temperature, stress, and deformation.
资助项目	National Key R&D Program of China[2017YFE0300103] ; National Natural Science Foundation of China[11975264] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228]
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000672578400006
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Comprehensive Research Facility for Fusion Technology Program of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123478]
专题	中国科学院合肥物质科学研究院
通讯作者	Wei, Jianglong
作者单位	1.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Peoples R China
推荐引用方式 GB/T 7714	Wei, Jianglong,Zhang, Zhaoyuan,Yi, Wei,et al. Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system[J]. FUSION ENGINEERING AND DESIGN,2021,169.
APA	Wei, Jianglong.,Zhang, Zhaoyuan.,Yi, Wei.,Tao, Ling.,Liang, Lizhen.,...&Hu, Chundong.(2021).Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system.FUSION ENGINEERING AND DESIGN,169.
MLA	Wei, Jianglong,et al."Thermo-mechanical design of the neutralizer for CRAFT negative ion-based neutral beam injection system".FUSION ENGINEERING AND DESIGN 169(2021).