Commissioning of cryogenic system for China Spallation Neutron Source

doi:10.1088/1757-899X/278/1/012108

	Commissioning of cryogenic system for China Spallation Neutron Source
	L. Na; H. Chongchao; Bin, Y.; He K(何坤); Li N(李娜); Ding MY(丁美莹); Wang YQ(王亚琼); Zhang Y(张宇); Ye B(叶斌); He CC(何崇超)
刊名	IOP Conference Series: Materials Science and Engineering
	2017
卷号	278 页码:12108
关键词	China Spallation Neutron Source cryogenic system commissioning
ISSN号	1757-8981
DOI	10.1088/1757-899X/278/1/012108
文献子类	Proceedings Paper
英文摘要	China Spallation Neutron Source(CSNS) cryogenic system provides supercritical cryogenic hydrogen to neutron moderators, including a helium refrigerator, hydrogen loop and hydrogen safety equipment. The helium refrigerator is provided by Linde with cooling capacity of 2200 W at 20 K. Hydrogen loop system mainly includes cryogenic hydrogen pipes, hydrogen circulator cold-box and accumulator cold-box. Cryogenic hydrogen pump, ortho-para convertor, helium-hydrogen heat-exchanger, hydrogen heater and accumulator are integrated in hydrogen circulation cold-box, and accumulator cold-box. Hydrogen safety equipment includes safety valves, rupture disk, hydrogen sensor, flame detector and other equipment to ensure that cryogenic system in dangerous situations will go down, vents, or takes other measures. The cryogenic system commissioning work includes four steps. First, in order to test the refrigerating capacity of refrigerator, when acceptance testing, refrigerator internal heater was used as thermal load. Second, using simulation load as heat load of moderator, hydrogen loop use helium instead of hydrogen, and cooled down to 20 K, then re-warming and test the leak detection of hydrogen loop system. Third, base on the step 2, using hydrogen as working medium, and optimized the control logic. Forth, cryogenic system with the moderators joint commissioning. Now, cryogenic system is connected with the moderators, and the forth step will be carried out in the near future.
会议地点	Madison, WI
会议日期	JUL 09-13, 2017
WOS研究方向	Engineering ; Physics
语种	英语
WOS记录号	WOS:000426783000108
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284853]
专题	高能物理研究所_东莞分部高能物理研究所_实验物理中心中国科学院高能物理研究所_中国散裂中子源
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	L. Na,H. Chongchao,Bin, Y.,et al. Commissioning of cryogenic system for China Spallation Neutron Source[J]. IOP Conference Series: Materials Science and Engineering,2017,278:12108.
APA	L. Na.,H. Chongchao.,Bin, Y..,何坤.,李娜.,...&D. Meiying.(2017).Commissioning of cryogenic system for China Spallation Neutron Source.IOP Conference Series: Materials Science and Engineering,278,12108.
MLA	L. Na,et al."Commissioning of cryogenic system for China Spallation Neutron Source".IOP Conference Series: Materials Science and Engineering 278(2017):12108.