| | Cooling to base today |
| 1314 | Turn on 4He pump. Open Recovery valve to 4He pump. Pump out line to 1K pot (speedivalve closed).Check pressure in 1K Pot (with V4a open, 4He pump inlet valve closed). 1K Pot = 0.36 bar on mechanical gauge. |
| 1321 | Pump out 1K Pot slowly, opening the 4He pump valve until it just starts to make noise, then opening it more when it becomes more quiet. |
| 1325 | Start pumping 1K Pot continuously |
| 1328 | MC(H35) = 5.04 K, cooling slowly. 1K Pot = 3.38 K / 1.1 mbar, cooling slowly |
| 1330 | Open 1K Pot needle valve → 15° (half a unit mark). 1K Pot (P2) → 3.01 K / 6.0 mbar |
| | MC temperature started dropping MC(H35) = 4.01 K |
| 1335 | Open 1K Pot needle valve → 30°. 1K Pot → 2.5 K / 18 mbar. MC(H35) = 3.33 K |
| 1340 | Open 1K Pot needle valve → 45°. 1K Pot → 1.86 K / 32 mbar MC(H35) = 3.19 K |
| 1343 | G1/G2 = 317/307 mbar dropping linearly |
| 1344 | MC(H35)/1Kpot = 3.08/1.73K dropping linearly |
| 1353 | MC(H35)/1Kpot = 2.57/1.656K still dropping linearly. G1/G2 = 135/152 mbar . 1K Pot(P2) reads 26 mbar. |
| 1410 | MC(H35)/1Kpot = 2.14/1.54 K still dropping linearly. G1/G2 = 59/61 mbar . 1K Pot(P2) reads 8.5 mbar. |
| 1420 | Close V3 and V9, leaving 52.4 mbar mixture in dump. P2 jumped up to 32 mbar. |
| 1420 | Turn on 3He pump |
| 1428 | Start circulation through Trap 1. V6 → 12.6%. Condenser peaks at 345 mbar. MC(H35) → 1.55 K. Still → 1.56 K / 45 mbar. Took about 2 minutes for P1 to start reading below max. |
| 1432 | V6 → 13.0%. Condenser(G1) flattened at 227 mbar. MC(H35) → 1.18 K. Still(P1) → 1.22 K / 5.5 mbar. |
| 1437 | V6 → 13.4%. Condenser(G1) peaks at 183 mbar. MC(H35) → 1.1 K. Still(P1) → 1.18 K / 4.0 mbar. |
| 1445 | V6 → 13.8%. Condenser(G1) peaks at 187.8 mbar. MC(H35) → 0.80 K. Still(P1) → 1.16 K / 2.8 mbar. |
| 1455 | V6 → 14.4%. Condenser(G1) peaks at 194 mbar. MC(H35) → 0.55 K. Still(P1) → 1.15 K / 1.4 mbar. |
| 1501 | V6 → 15.0%. Condenser(G1) peaks at 189.5 mbar. MC(H35) → 0.34 K. Still(P1) → 1.14 K / 0.8 mbar. |
| 1507 | V6 → 100%. Condenser(G1) peaks at 184 mbar. MC(H35) → 0.154 K. Still(P1) → 1.09 K / 0.19 mbar. P2 remain steady at 32 mbar during the process of opening up V6 |
| 1524 | MC(H35) = 48.7 mK and on a small bump, G1 = 136 mbar and falling linearly. 1K Pot = 1.66 K / 32 mbar. |
| 1549 | MC(H35) = 30.8 mK and pretty flat, G1 = 117.7 mbar and pretty flat. 1K Pot = 1.66 K / 32 mbar. |
| 1550 | Open V14 to pull the rest of the mixture out of the dump into circulation. |
| 1551 | MC rises to 85 mK, Still peaks at 800 mbar (on readout) then falls again, Condenser(G1) rises to 204 mbar. 1K Pot unaffected. |
| 1553 | MC seems to have a second wind and is rising again to 100 mK, condenser is falling like usual |
| 1615 | Take the LN2 dewar to be filled |
| 1618 | Still = 0.65 mbar (less than 1). close V14 |
| 1715 | Bring back LN2 dewar, fill cold trap dewar |