| Status | Run 74 finished. Warming up. |
| | Setup: DIB1/2+acc → SL 41/43 → 3.2 MHz filters → cables 2/3 → nothing/Source_mover_board+HV_diverter_board → DCRC50(3)/55(1). Kepco 40V supplye → HV BNC. Lead shield erected, 4 walls. Currently both DCRCs are on. |
| | All mixture is in dump. Fridge open to IGH. V4a closed so no longer pumping on 1K Pot. |
| 1006 | Tower/MC(H35)/MC(Cernox)/Sorb = 10017/NaN/10634/30900 mK |
| 1017 | We closed the manual V12b valve. |
| 1022 | We closed the 1KPot speedivalve. |
| 1325 | Close valve at 4He pump inlet and turn off 4He pump. |
| 1330 | Pump out 1K Pot with scroll pump, then close 1K Pot speedivalve |
| 1335 | Turn off DAQ programs (triggerfe, towerfe, dcrc_driver) and power down DCRCs. |
| 1340 | Pump out fridge with Scroll Pump (? I don't think we did this. -Matt) |
| 1340 | Tower/Sorb = 11.9/39.0 K |
| 1350 | Let about 0.4 mbar He gas into IVC. Tower temperature rises above 16 K. Sorb rises above 43 K. |
| 1410 | Tower = 18.8 K, flat. Sorb = 42.9 K and falling. |
| 1445 | Isolate IVC, then move pump manifold line over to cryostat vacuum jacket(CVJ) port |
| 1450 | Let 4.6 mbar He gas into vacuum manifold, then let this into CVJ. CVJ → 74 μbar |
| | He recovery rate increases from 12 to 40 cuft/hour. |
| 1500 | Remove lead/poly shield |