Improvement of Cryogenic System for China Spallation Neutron Source

Autor:	He Chongchao, Li Na, He Kun, Zhang Yu, Ye Bin, Wang Yaqiong, Ding Meiying
Rok vydání:	2020
Předmět:	Materials science Cryogenic system Nuclear engineering Spallation Neutron Source
Zdroj:	IOP Conference Series: Materials Science and Engineering. 755:012071
ISSN:	1757-899X 1757-8981
DOI:	10.1088/1757-899x/755/1/012071
Popis:	The commissioning of China Spallation Neutron Source(CSNS) cryogenic system was completed in July, 2017. It runs 258 days totally until July, 2018, and the longest continuous running period is 184 days. CSNS had passed the national acceptance in August 2018. Now it is running stable from September 19th 2018. There are no any faults in the process of running. However, cryogenic system needs to be improved in the near future. The flow of hydrogen cycle can’t be controlled effectively. The flows through the cryogenic circulators working at the same frequency are different. The pressure drop of the ortho-para convertor is very high, and it maybe the root cause of this phenomenon. Therefore, the ortho-para convertor needs to be redesigned and re-manufactured, and the flow resistance must be measured. In future, the new ortho-para convertor will be installed in hydrogen cold-box.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5b1cf002013a3c8b13693cf656fa939a https://doi.org/10.1088/1757-899x/755/1/012071 Zobrazit plný text záznamu