| Status | Run 77 preparation |
| Setup | DCRC33(2)→HV control, NaI trigger signal → DCRCX(4) |
| | IVC closed and Turbo pumping for a while. No tower - this was just for a leak test. |
| 1130 | Check contents of warm LN2 Trap 1: 10.1 mbar. Pump it out with the scroll pump. |
| 1137 | G1 = 2.0 and stable, stop pumping on trap 1. |
| 1140 | Insert cold trap 1 into the LN2 bath, begin filling with LN2. |
| 1152 | Begin cryocleaning through cold trap 1. |
| 1157 | Open V6 to 12.1% to restart flow |
| 1205 | Open V6 to 12.4% to restart flow, G2 started rising too quickly, turn back to 12.1% |
| 1223 | Mixture is flowing but G2 (569) is a bit lower than G1 (623), trying increasing V6 |
| 1226 | V6 increased to 12.4%, but G2 still settles to the same value, ill leave it here. |
| 1242 | Open V6 to 12.5% to restart flow |
| 1311 | Open V6 to 12.6% to restart flow |
| 1340 | Stop cryocleaning through LN2 trap 1, pump mixture to dump. |
| 1353 | G1 = 1.8 mbar and stable, close all valves, leaving 722.2 mbar in the dump |
| 1357 | Remove cold trap 1 from the LN2 bath |
| 1400 | Check contents of warm LN2 Trap 2 again: 4.6 mbar. Pump it out with the scroll pump. |
| 1406 | G1 = 2.0 and stable, stop pumping on trap 2. |
| 1408 | Insert cold trap 2 into the LN2 bath. |
| 1430 | Begin cryocleaning through cold trap 2. |
| 1437 | Open V6 to 12.4 to restart flow |
| 1445 | Add copper tape on top of the tower (on the bottom of the 2d source mover plate) covering holes and gaps to block IR |
| |   |
| 1455 | Stop cryocleaning through cold trap 2, pump mixture to dump |
| 1510 | G1 = 1.5 mbar and stable, close all valves, leaving 725.6 mbar in the dump |
| 1513 | Turn off 3He pump, remove cold trap 2 from the LN2 bath |