2016/03/03 (Thursday)
| Setup: iZIP mode, DIB1/2/3 → cables → 3.2 MHz filters → DCRC55/33/50 | |
| Idle overnight, DCRCs powered | |
| 0850 | Tower/MC(H35)/MC sensor/Cold Plate = 30.9/26.6/39/149 mK, Still = 1.17 K / 0.095 mbar, G1/G2 = 135/120 mbar, 1K Pot = 1.58 K / 4.0 mbar, Main bath = 41.7% |
| 0855 | Fill LN2 cold trap Dewar |
| 0920 | Turn on filter switches for Qi and Qo Drain and Feedback for DIB1 and DIB3 (switches 50, 16, 30, 12). Now all DIB2 on and on DIB1&3 all on except Qi/Qo source, bias. Repower DCRCs. Zap SQUIDs. Set up timing link. |
| 1005 | Many of the QET biases and SQUID biases were at zero on the ODB for some reason. Restore to settings from yesterday and get pulses going in all phonon channels. |
| 1010 | Perform mini IbIs on all three DIBs with all filters ON on DIB2/DCRC33 and all filters ON Except Charge Source&Bias on DIBS 1&3/DCRCs 55&50 |
| 1040 | Unpower DCRCs. On DIBS 1&3 (DCRCs 55&50), switch pi-filter boards so all phonon lines are ON (only switches that are OFF: 46, 45, 49, 42, 26, 15, 16, 50, 31, 11, 12, 30, 27). Reattach pi-filter boards, repower DCRCs, and zap SQUIDs. |
| 1115 | Perform mini IbIs on all three DIBs with all DIB2 filters ON and DIB1&3 phonon filters ON. Turn off pFeedback switches on DIB1&3: 6, 18, 21, 41, 25, 2 37, 22. Reattach pi-filter boards, repower DCRCs, zap SQUIDs, set up timing link. Restore phonon channels. |
| 1245 | Perform mini IbIs on all three DIBs with all DIB2 filters ON and DIB1&3 SQUID and QET ON. |
| 1324 | Power off DCRCs, switch off filters for QET lines on DIBs 1&3 (switches: 3, 14, 13, 17, 32, 1, 35, 33, 29, 47, 48, 7, 10, 5, 9, 28, 38, 43, 40, 36, 44), and switch on Feedback lines (switches: 21, 18, 25, 37, 2, 41, 22, 6). Reattach pi-filter switchboards and repower DCRCs. Zap SQUIDs. |
| 1400 | Perform mini IbIs on all three DIBs with all DIB2 filters ON and DIB1&3 SQUID and Feedback ON. |
| 1420 | Power off DCRCs, switch on filters for QET lines on DIBs 1&3 (switches: 3, 14, 13, 17, 32, 1, 35, 33, 29, 47, 48, 7, 10, 5, 9, 28, 38, 43, 40, 36, 44), and switch off SQUID lines (switches: 4, 20, 19, 34, 8, 24, 23, 39 ). Reattach pi-filter switchboards and repower DCRCs. Zap SQUIDs. |
| 1446 | Perform mini IbIs on all three DIBs with all DIB2 filters ON and DIB1&3 QET and Feedback ON. Unpower DCRCs, remove pi-filter switchboards, attach DSUB pi-filter connectors. Power on DCRCs. Zap SQUIDs. |
| 1527 | Commence LHe transfer (32.4%). |
| 1548 | In an effort to get back to original (non-bug-produced) DCRC settings, open up /data/chocula/k100/midasraw/livedata/run00533.odb, which was from an earlier time this run, and change phonon channel settings back to the values found therein. |
| 1600 | Use SQUID Tuning GUI to examine phonon channels. A few are railed, so use the GUI SQUID Editor to adjust their Driver Offsets. Afterwards, compare the ODB with the run00533.odb file to see if the Editor accidentally changed an extraneous values. It had not, so it doesn't bug out every time. |
| 1605 | Finish LHe transfer (90.6%). |
| 1635 | After experimenting with methods for measuring Tc's, set all phonon settings back to normal, and check to see that pulses are alive. |
| 1640 | Fill LN2 cold trap full. Release pressure from Main Bath. |
| 1646 | Start 30min background series at -4/+4 V with FG=5/2/5, OG=3, with 1000 initial randoms, 1000 ending randoms, with 30s flash and 25 minute cooldown before series. Trigger on DIB1 phA with threshold of 30ADC bins, with 150 us pileup cut window. |
| 1720 | Current leakage tests performed on flexible side coax. No current leakage found up to 1039 V applied to Qi/Qo bias. Test details shown here. |
Spreadsheet of Mini-IbIs data