| Status | Warming after finding a blockage. MB full of He gas, IVC has He transfer gas |
| 0825 | MC(Cernox) = 182.6 K, Sorb = >250 K, IVC = 2.5 mbar |
| 0830 | Check pressure in LHe cold trap by opening V1 and V3. P1 goes up slightly, from 0.017 to 0.020 mbar |
| 0835 | Open still gate valve and condenser speedivalve. No increase seen on P1. |
| 0845 | Fill LN2 cold trap bath |
| 0920 | Try a forward throughput test through V9, V13A, V12A, V1, still gate valve, then open condenser speedivalve. No increase on P1. No throughput. |
| 0930 | Pump mixture back to dump. Dump (G2) = 794.6 mbar. |
| 0935 | Let one hose-length of He gas into MB vacuum jacket to speed up warming. |
| 1000 | MC starts warming more quickly. |
| 1100 | MC(Cernox) = 192.8 K, IVC = 3.0 mbar |
| 1245 | Checked to see if there was oil in the still pumping line. First fill pumping line with clean N2 gas, through vent & V7 & V8 with V2 also open to monitor pressure, fill to 1000 mbar. Then disconnect still pumping line near 3He pump, just above V6. Use a wipe to check for oil - it's very dry and clean, no oil. Then disconnect near the gate valve, also very clean. Reconnect both o-ring joints then pump out with scroll pump through V5A & V2A. |
| 1305 | Stop pumping out still pumping line, got P1 down to 0.5 mbar, G1 down to 1.2 mbar/ P2 down to 0.019 mbar (P2 falls to 0.012 mbar after closing valves) |
| 1320 | Pump GHS contents (G1 and P1 volumes) to dump using 3He pump. Dump (G2) = 790.8 mbar |
| 1330 | MC(Cernox) = 215 K, IVC = 3.4 mbar |
| 1330 | Open LHe trap to P1 through V1, V3. P1 goes up from 0.014 to 0.032 mbar. |
| 1335 | Open condenser to P1 through speedivalve, P1 goes up from 0.022 to 0.034 mbar. |
| 1340 | Open still gate valve to P1. P1 goes up slowly from 0.024 to 0.038 mbar. |
| 1345 | Pump fridge to dump. Dump (G2) = 793.6 mbar. |
| 1350 | MC(Cernox) = 216.6 K. |
| 1350 | Try a forward throughput test through LN2 cold trap 1. P1 doesn't budge, no throughput. |
| 1355 | Pump fridge to dump |
| 1425 | Dump (G2) = 796.3 mbar. |
| 1455 | Commence cryocleaning through Cold Trap 2. V6 open to 12.5%. |
| 1510 | Close V13B to check flow. No flow. Increase V6 to 13.0% before flow is restored. |
| 1620 | Close V13B to check flow. Very slight flow that may be too slow. Increase V6 to 13.1%. |
| 1645 | Flow still present. Cease cryocleaning and pump to dump. |
| 1730 | Fill LN2 cold trap full. Cease pumping to dump. Isolate dump and turn off He3 pump. |
| 1740 | Perform forward throughput test. Before opening Gate valve, P1 read 16ubar. After opening Gate Valve and allowing mixture to flow through fridge into still, P1 begins climbing. |
| 1745 | P1 has climbed to 3.8mbar and is still increasing. Pump mixture to dump. |