摘要
In the year of 2018,the work of cryogenic group is mainly focused on the operation of cryogenic system and preliminary design of CiADS&HiAF linac cryogenic system.The cryogenic System has been running 240 d continuously and reliably,which supplies liquid helium to 4 cryomodules of ADS injector II,superconducting cavity testing facility and other cry-testing equipments,shown in Fig.1.It has achieved closed-loop operation,recycling helium automatically,which did great contribution to ADS injector II and other cry-testing.Last year,cryogenic group improved the cryo-design of HCM6-3 in ADS injector II,and re-assembled it.So,in the second half of last year,the running stability and reliability have been improved significantly.As shown in Fig.2,helium pressure can be controlled at 1.05 bar1.0 mbar,helium level at 180 mm10%for a long time.
