| Status | Run 75 in progress |
| Setup | Tower Faces 5/3/2 → Cables 2/1/3 → nothing/diverter_board/nothing → DCRC55(1)/DCRC50(3)/DCRCx(4) |
| 1030 | Goldman/Tower/MC/Coldplate = 51.1/118/37.0/221 mK, Still = 1.71±0.05 K / 0.130 mbar / 0 mW, G1/G2= 181/167 mbar, 1K Pot = 1.64 K / 27±2 mbar. MB = 69.8% |
| | Coldplate and Still thermometers are still reading high, still thermometer reading not very stable. |
| 1035 | Fill LN2 cold trap bath. |
| 1050 | Yesterday's IbIs on DCRC3pA railed high. I took another look. The peak seems to be around 160 uA. Baseline was near 1V there. I went to 350 uA then went down and it did indeed rail. I readjusted the Driver Offset so that at several points between 350 and 160 it isn't railed. That's D.O. of -0.3, previously was -0.5. |
| 1056 | Start automated IbIs on DCRC3pA. 350 to 50 uA step -2. |
| 1135 | Make new directory in /byseries and move the QB_scan files from /livedata to the new directory. |
| 1140 | Adjust DCRC3pB driver offset so that IbIs peak (QET bias around 175) is near top of output scale (around 1V). |
| 1142 | Start automated IbIs on DCRC3pB. 350 to 50 uA step -2. |
| 1216 | Make new directory in /byseries and move the QB_scan files from /livedata to the new directory. |
| 1231 | Adjust DCRC3pC driver offset so that IbIs peak (QET bias around 240) is near top of output scale (around 1V at DO -0.7). |
| 1235 | Start automated IbIs on DCRC3pC. 450 to 150 uA step -2. |
| 1320 | Make new directory in /byseries and move the QB_scan files from /livedata to the new directory. |
| 1500 | Look at the dead channel for a bit, DCRC3pD. Changing QET bias from 0 to 1000 uA causes a fall in baseline of only 0.0048 V. That's an Is change of only 0.185 uA. Naively that suggests Rtes of 43 Ohm. |
| 1520 | Start DAQ programs with only DCRC4 enabled |
| 1525 | Adjust DCRC4pA driver offset so that IbIs peak (QET bias around 230) is near top of output scale (around 1V). |
| 1531 | Start automated IbIs on DCRC4pA. 400 to 100 uA step -2. |
| 1605 | Make new directory in /byseries and move the QB_scan files from /livedata to the new directory. |
| 1610 | Adjust DCRC4pB driver offset so that IbIs peak (QET bias around 175) is near top of output scale (around 1V). |
| 1613 | Start automated IbIs on DCRC4pB. 350 to 50 uA step -2. |
| | Something went wrong with the 1531 data sequence. First, the data series stop at 208 uA rather than going all the way down to 100 uA. Second, the data is somehow unreadable. Both the pulse dump code and BatViewer segfault when trying to read it. |
| | Actually I can't get BatViewer to work on older data either, although the pulsedump code works. I thought I got BatViewer working earlier… |