2017/06/02 (Friday)
| Setup: DIB1/3/4 → 3.2 MHz filters 3/1/2 → cable 3/1/2 →gender changer 3/1/2 → HVConn 1/3/2 → HV 1/2 → DCRC55/DCRC33 | |
| 0910 | Tower = 33.1 mK Main Bath = 30.6% |
| 1230 | Refill LN2 dewar. |
| 1239 | Tower/MC/Coldplate = 33.0/29.6/191 mK, Still = 1.26 K / 0.110 mbar, G1/G2 = 222/207 mbar, 1K Pot = 1.674 K / 22.0 mbar. Main Bath = 25.6% (predicted level: 25.8%) |
| 1248 | Start LHe transfer (MB = 25.2%) |
| 1341 | End LHe transfer (MB = 91.3%) |
| 1400 | Fill LN2 cold trap bath. |
| 1410 | Created an IbIs sequence, IbIs_sequence3.msl, which steps from 250 uA down to 50 uA in 0.2 uA steps, taking 5 seconds of data at each step as a separate MIDAS run. Need to disable Write As CDMS Series in /Logger, and need to remember to reenable this. |
| 1440 | Set all Driver Gains to 1. Set QET biases to the IbIs peak values (140/155/140/-135/-160/-155). Then adjust Driver Offsets to set baseline high, around 1.1 V. Driver offsets: -0.6/0.0/-0.6/0.11/0.20/0.12. This should give enough Vout range to capture entire IbIs curve. |
| 1451 | Start IbIs sequence (start #6846) in 1-sided 0 V mode with Frontend Gain = (15/10/10)/(5/4/4), OG = 1/1, with QET biases starting at 250/-250 stepping down in 0.2 steps to 50/-50, single 5 second MIDAS run per step, 20 Hz randoms. |
| 1500 | Tried copying the first file as a pseudo-CDMS file in directory /byseries/07170602_2500. But couldn't read it with BatViewer. Stop sequence to test whether an ordinary run will read properly. |
| 1506 | Start test data series with settings as they were left off in the sequence but with Write as CDMS Series enabled. Just hit the start button then stop after a few seconds. |
| 1510 | This was also unreadable. Try restarting the DAQ programs. |
| 1510 | Start test data series with settings as they were left off in the sequence but with Write as CDMS Series enabled. Just hit the start button then stop after a few seconds. |
| 1515 | This was also unreadable - using jiajin. But after ssh-ing into cdms1, BatViewer works on all the data taken today. Ok then. |
| 1518 | Start IbIs sequence (start #6893) in 1-sided 0 V mode with Frontend Gain = (15/10/10)/(5/4/4), OG = 1/1, with QET biases starting at 250/-250 stepping down in 0.2 steps to 50/-50, single 5 second MIDAS run per step, 20 Hz randoms. |
| 1652 | Sequence has reached 186.2 uA. At this rate it will finish by 20:12. |
| 1847 | It looks like the DAQ failed somehow at this point. The last good run is #7615 with the QET biases set to 105.6. Then the next run continued throughout the weekend with one dump per minute and very small files. Deleted all that data. |
| The first set of IbIs data, started at 14:51 (Midas start #6846) has been copied to /byseries/07170602_2500. The second set of IbIs data, started at 15:18 (Midas start #6893) has been copied to /byseries/07170602_2600. In both directories the dump number indicates the QET bias times 10, e.g. 07170602_2600_F1714.mid.gz is with QET bias = 171.4 uA. |