2016/10/22 (Saturday)
| Setup: DIB1/3/4 → 3.2 MHz filters → cables → DCRC55(1)/33(2)/50(3) |
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| 1300 | Tower temp @1.6K, 1K pot pressure ~1mbar, 1Kpot temp=6K, G1/G2=999/980mbar. MB=33.5%. Looks like 1K pot fell and things started to heat up around 0530. Boiloff rate good, slow mode. |
| Close v13b and open v9 to recover to dump. | |
| 1305 | Return Cf source to safe. |
| 1328 | With P2=600mbar, tweak 1K pot needle valve and open v13b, close v9 to try and condense again. |
| 1331 | 1K pot pressure rises to 14mbar and 1K pot temp falls to 2.2K with g1/G2=380/360mbar. |
| 1339 | Fill LN2 cold trap full. |
| 1340 | 1K pot pressure fell to 7mbar, tweak it open a bit more. |
| 1346 | With G1/G2 at ~120mbar each, open v14 to let more mix into circulation. Close v14 once G2=400mbar. |
| 1348 | G1/G2 peak at 500mbar and are slowly falling. 1K pot=1.6K/15mbar, Tower=800mK. |
| 1357 | Commence LHe transfer (32.0%) |
| 1411 | G1/G2 ~90mbar, open v14 for a second, G1/G2 rise to 550mbar and start falling. Tower=1K. |
| 1414 | Open v14 until G1=500mbar. |
| 1418 | Open v14 until G1=500mbar. |
| 1422 | G1/G2=260mbar/240mbar. Open v14 until G1=500mbar. |
| 1428 | Tower/Coldplate=770/906 mK, Still=1.55K/110mbar, 1K Pot = 1.61 K / 110 ubar. |
| 1437 | Cease LHe transfer (90.2%) |
| 1442 | Open v14 until G1=500mbar. Tower=700mbar |
| 1447 | Leaving v14 open, G1/G2 top out at 360/340 mbar. |
| 1450 | Release MB pressure |
| 1504 | G1/G2 stable at 186/176 mbar. Closing v14. Tower temp=270mK and falling. |
| 1529 | Release MB pressure. |
| 1530 | Tower/MC/Coldplate = 41/46/212 mK, Still = 1.19 K / 110 μbar, G1/G2 = 151/144 mbar, 1K Pot = 1.62 K / 13.0 mbar. MB = 89.5% |
| 1540 | Tower=36mK |
| 1541 | Looks like all channels are railed. Gonna zap and then try to recover them. |
| 1618 | Managed to recover all but DIB1PD. It is not showing pulses and playing with QET bias doesn't seem to help. |
| 1620 | Tweak 1K pot needle valve. Settles at 24mbar. |
| 1622 | Tower temp stable at 32mK |
| 1628 | Start 15 one-hour data series of 0V data with Frontend Gain = 5/2/5, OG = 8/3/8, with 1000 beginning |
| 1629 | 1K pot = 19mbar. Give it a lil pop up to 36mbar. |
| 1633 | Pulses look good in batviewer, I'm outta here! |
| 2201 | Notice that both DIB1pD and DIB2pC are railed. The latter was ok at 18:00 but gone by 19:00 |