2020/03/19 (Thursday)
| Setup | Run 72. DIB 1/3/4 → Stripline 43/41/48 → Cable 3/2/1 → nothing/nothing/accessory_interposer → HV_Conn 1/3/2 → HV 1/2 → DCRCX(4)/DCRC55(1). Lead/poly shield erected (4 lead walls, 2 poly walls). |
|---|---|
| Status | Second Run 72 circulation attempt failed due to helium in IVC. Warming up again. Helium and nitrogen in IVC and cryostat vacuum jacket. 1K Pot isolated. All mixture in dump. LN2 Trap 1 cleaned. MB recovery valve open. Plan is to try to fix leak at top of stripline tube. Lab is in hibernation because of novel coronavirus. |
| 0434 | Recovery meter = 343774.85 cuft. Rate = 0.0018 cuft/hour |
| 0840 | MC(Cernox) = 270.0 K. |
| 2315 | MC(Cernox) = 280.4 K. |