| 0810 | Status: Tower installed, electrical checkout OK. |
| 0830 | Put IVC bottom on by two screws, do quick electrical checkout: looks OK. |
| 0925 | All screws on IVC bottom tightened. Begin slowly pumping out IVC on both sides with scroll pump. |
| 0940 | IVC = 340 mbar |
| 0945 | remove mini cleanroom |
| 0955 | IVC = 160 mbar, open valve to pump a little wider |
| 1005 | IVC = 0.086 mbar with valve to scroll pump fully open |
| 1020 | IVC = 0.063 mbar pumping, 0.12 mbar with pump valved out. Begin turbo pumping IVC. |
| 1035 | IVC = 1.0e-3 mbar, turbo pumping pressure |
| 1050 | Turn on leak checker |
| 1100 | IVC = 0.54e-3 mbar, turbo pumping pressure |
| 1115 | IVC = 0.40e-3 mbar, turbo pumping pressure |
| 1120 | Try pumping on IVC with LD. ~1000 e-9mbarL/s. Pretty high background, back to turbo pumping. |
| 1300 | IVC = 0.25e-3 mbar / 10e-3 mbar with pump valved out |
| 1305 | Try leak detector on IVC, after 5 minutes background = 870 e-9mbarL/s |
| 1400 | G1=7.3 mbar, G2=756 mbar (He-3 pump off), P1=3.4 mbar, P2=1 bar. Close V9 to isolate dump. Turn on He4 pump to pump out P2. Isolate He4 pump once P2>0.02 and open P2 to cold traps, one at a time. After several minutes P2 reads 50mbar of dirt in two LN cold traps combined (34/16 mbar in Trap1/2). Open up He4 pump valve to pump out. |
| 1430 | IVC = 0.14e-3 mbar / 7.4e-3 mbar with pump valved out |
| 1450 | Leak detector background ~80 pbar*l/s isolated, 590 pbar*l/s when pumping on IVC |
| 1500 | Leak check all seals. No convincing leaks, some deviations of about 20 pbar*l/s. Should pump it lower and leak check again. |
| 1505 | Isolate cold traps and He4 pump. Open gate valve, P1 rises from 3.6 mbar to 5 mbar. Turn off leak checker. |
| 1512 | Open condenser line to let material from He cold trap into P1. After a few minutes P1 rises to 60 mbar. G3=8.3 mbar; open V1 and V3 , P1 rises to 1 bar and G1 rises to 25.4 mbar. |
| 1515 | Open V9 to allow dump mixture to flow to G2. Turn on He3 pump and G2 reaches 784.3 mbar. Close V3 and open V5 and V6. Now condenser valve, gate valve, V1, V4, V6, and V9 are open, pumping all mixture/fridge contents to the dump. |
| 1525 | Fill LN2 cold trap. |
| | Somewhere around here, begin cleaning mixture |
| 1532 | G2=790.8 mbar, P1=0.020 mbar, G1=0.5 mbar. |
| 1655 | Confirm that there is still flow before leaving. Also, pressure in IVC has dropped from 1E-4 mbar (roughly an hour prior) to 7.4E-5 mbar, a good sign. |