| | Status: stopped circulation yesterday. Fridge lines connected to dump. LN2 trap pumped out to dump. 1K Pot needle valve open. |
| 1000 | Tower/1K Pot/Sorb = 1.9/>7/10.3 K, G1(fridge) = 249 mbar, MB = -0.2%. Tower temperature and fridge pressure rising. |
| 1010 | Remove Traps 1 and 2 from LN2 bath to let them warm up. |
| 1010 | Turn on MC heater and Still heater to 20 mW each. Tower temperature rising. |
| 1015 | Close V4 and V14 to isolate dump. V1 and V3 open. Trapping the mixture in the fridge while heating. Fridge pressure at G1 rising. |
| 1025 | Tower = 3.37 K, Fridge (G1) = 488 mbar, both rising quickly. Sorb has fallen to 5.2 K. |
| 1035 | Tower = 3.96 K, Fridge (G1) = 890 mbar. Open V4 for a minute to relieve some pressure from fridge to dump, then close again. Tower temperature and fridge pressure both drop. |
| 1040 | Tower = 3.5 K, Fridge (G1) = 450 mbar |
| 1100 | Tower = 4.08 K, Fridge (G1) = 945 mbar. Open V4 for a minute to relieve some pressure from fridge to dump, then close again. Tower temperature and fridge pressure both drop. |
| 1100 | Tower = 3.7 K, Fridge (G1) = 635 mbar |
| 1110 | MC(Cernox) = 5.27 K, Fridge (G1) = 737 mbar, both leveling out |
| 1150 | MC(Cernox) = 5.39 K, Fridge (G1) = 804 mbar, Sorb = 7.6 K, all flat |
| 1155 | Start pumping fridge to dump, V6 = 13.0%. MC temperature falls a little. |
| 1300 | MC(Cernox)/Sorb = 5.42/7.7 K, both pretty flat. Dump(G2) = 702.2 mbar, nearly flat. Fridge(G1) = 55 mbar, pretty flat. |
| 1305 | Open V6 to 100%. Fridge(G1) falls further. P1 (still) was maxed out but now falls into readable range. Dump(G2) pressure goes up a bit too. |
| 1305 | Stop MIDAS programs and disconnect power from DCRCs. |
| 1330 | MC(Cernox)/Sorb = 5.47/8.0 K. Dump(G2) = 719.8 mbar, rising slowly. Fridge(G1) = 0.6 mbar, flat. |
| | This is the same amount of mixture we got out in Run 65. |
| 1352 | Close Still gate valve at top of fridge and Condenser speedivalve. Close V1, V3, V6. |
| 1358 | Close V9, turn He3 pump off. G2 falls quickly, 590.5 mbar. G1 = 1.1 mbar. MC(Cernox)/Sorb = 5.47/8.1 K. |
| 1400 | Turn off Still & MC heaters. |
| 1405 | MC(Cernox)/Sorb = 5.2 and falling/8.2 K. G1/G2 = 1.3/590.1 mbar. |