UMN CDMS Wiki archive
start › cdms › k100 › run_diary › 20130708

2013/07/08

1003 Mixture still appears to be flowing (i.e. cryocleaning). Currently G1=546.1mbar and G2=504.2mbar.
1046 Filled LN2 coldtrap.
1155 Begin pumping mixture to dump.
1151 Isolate dump by closing all valves on IGH, G1=0.4mbar, G2=694.6mbar.
1221 Begin helium transfer. Main bath empty (at -1%).
1315 Ran out of He gas, borrowed some from Zudov's lab. Continued LHe transfer (-1%).
1356 End helium transfer. Main bath 92.1%.
1431 Started 1K Pot. Returned He gas to Zudov's lab.
1500 Begin condensing mixture.
1820 Current status: Lakeshore/MC=47.3K, G1=226.9mbar G2=559.0mbar. The mixture has been condensing with G1>200mbar for a few hours. Although it is now decreasing, it is doing so very slowly, most likely due to the high MC temp that is also currently decreasing. For now it will be left to its own devices for a few hours.
2059 Current status: Lakeshore/MC=44.0K, G1=226.0mbar G2=559.5mbar. The mixture has been condensing with G1>200mbar for a many hours, as seen in the last entry. As mentioned before, I believe this is due to the high MC temp. Once this drops, I am hopeful that it will condense. Then again, I am somewhat new at this.
2107 Filled LN2 coldtrap full.