Heat leakage of a vertical test cryostat for superconducting cavity based on variable arranged radiation shield

doi:10.1016/j.cryogenics.2019.02.004

	Heat leakage of a vertical test cryostat for superconducting cavity based on variable arranged radiation shield
	Zhang, Junhui 1; Su, Hailin1 ; Jin, Shufeng 2; Chen, Shuping 2
刊名	CRYOGENICS
	2019-04-01
卷号	99 页码:1-6
关键词	Superconducting cavity vertical test Liquid helium cryostat Heat transfer model Variable arranged radiation shield Experiment
ISSN号	0011-2275
DOI	10.1016/j.cryogenics.2019.02.004
通讯作者	Chen, Shuping(chensp@lut.cn)
英文摘要	The vertical test cryostat, which is used to measure the cryogenic performance of a superconducting cavity is a liquid helium open vessel, and has high requirements for thermal insulation performance. The inner vessel of the cryostat is high-vacuum multilayer insulation, and the open side is multi-shield insulation. In order to further reduce the heat leakage through the cover plate of the cryostat at the open side, a variable arranged radiation shield spacing is proposed. The coupling heat transfer model was established for the cover plate, radiation shields, liquid surface and helium gas, and was verified by experiment. The influence of the radiation shields distribution on the heat leakage and the optimal radiation shield arrangement were obtained by numerical calculation. As the number of radiation shields is 11, the method of the variable arranged radiation shield, which is to arrange 7-layer radiation shields in the high temperature region and 4-layer radiation shields in the low temperature region, has a minimal heat leakage. The method can reduce the heat leakage by 4% compared with the equal spacing method.
资助项目	Chinese Academy of Science[XDA03020000]
WOS关键词	DESIGN
WOS研究方向	Thermodynamics ; Physics
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000471207100001
资助机构	Chinese Academy of Science
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/133236]
专题	中国科学院近代物理研究所
通讯作者	Chen, Shuping
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Junhui,Su, Hailin,Jin, Shufeng,et al. Heat leakage of a vertical test cryostat for superconducting cavity based on variable arranged radiation shield[J]. CRYOGENICS,2019,99:1-6.
APA	Zhang, Junhui,Su, Hailin,Jin, Shufeng,&Chen, Shuping.(2019).Heat leakage of a vertical test cryostat for superconducting cavity based on variable arranged radiation shield.CRYOGENICS,99,1-6.
MLA	Zhang, Junhui,et al."Heat leakage of a vertical test cryostat for superconducting cavity based on variable arranged radiation shield".CRYOGENICS 99(2019):1-6.