| | Setup: DIB 1/3/4 → 3.2 MHz filters 1/2/3 → cable 1/2/3 → gender changer 1/3/4 → DCRC55(1)/33(2)/X(4) |
| 0853 | Tower = 26.2 mK, Still = 0.060 mbar, G1/G2 = 142/129 mbar, 1K Pot = 1.68 K / 26 mbar. MB = 67.4% |
| 0854 | Fill LN2 cold trap bath |
| 1030 | Ship G114 to SLAC. Used the same packaging that G132 came in - plastic box with a lot of cushioning, shipped standard. |
| 1059 | Start complex impedance frequency scan sequence on DIB1 PA,PC with signal amplitude = 6mVpp (DDSDACScaling = 8), Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = 0V setting from 2017/07/25, Charge biases are DCRC1/2 (Side2/1) = 0/0 V, taking 10 seconds of data with 3 sec pauses after each settings change. |
| | Dumps initially saved as midasraw/livedata/Fscan_[frequency].msl Move them to a new series: midasraw/byseries/07170807_2500/ |
| 1106 | Tower = 26.1 mK |
| 1114 | Start complex impedance frequency scan sequence on DIB1 PA,PC with signal amplitude = 6mVpp (DDSDACScaling = 8), Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = DCRC1 PA/PC=48/56 uA (between standard 0V settings and bottom of transition), Charge biases are DCRC1/2 (Side2/1) = 0/0 V, taking 10 seconds of data with 3 sec pauses after each settings change. |
| | Dumps initially saved as midasraw/livedata/Fscan_[frequency].msl Move them to a new series: midasraw/byseries/07170807_2600/ |
| 1116 | Tower = 25.9 mK |
| 1237 | Tower = 25.5 mK |
| 1238 | Forgot to set longer trace lengths for above freq scans. Redo them with DCRC1 phonon trace lengths = 10ms |
| | Start complex impedance frequency scan sequence on DIB1 PA,PC with signal amplitude = 6mVpp (DDSDACScaling = 8), DCRC1 phonon trace length = 10ms, Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = 0V setting from 2017/07/25, Charge biases are DCRC1/2 (Side2/1) = 0/0 V, taking 10 seconds of data with 3 sec pauses after each settings change. |
| | Dumps initially saved as midasraw/livedata/Fscan_[frequency].msl Move them to a new series: midasraw/byseries/07170807_2700/ |
| 1258 | Tower = 25.5 mK |
| 1259 | Start complex impedance frequency scan sequence on DIB1 PA,PC with signal amplitude = 6mVpp (DDSDACScaling = 8), DCRC1 phonon trace length = 10ms, Frontend Gain = (15/2)/(4/4)/(5/5/5/5), OG = 4/2/4, QET biases = DCRC1 PA/PC=48/56 uA (between standard 0V settings and bottom of transition), Charge biases are DCRC1/2 (Side2/1) = 0/0 V, taking 10 seconds of data with 3 sec pauses after each settings change. |
| | Dumps initially saved as midasraw/livedata/Fscan_[frequency].msl Move them to a new series: midasraw/byseries/07170807_2800/ |
| 1335 | About to take some automated IbIs. Set biases to DCRC1/2 = +2/-2 V. Found that DCRC2 was not ground - it had been left at -2 V since who knows when. |
| 1340 | Start QET bias scan (IbIs) sequence on DCRC4pB with DCRC4pB (Side2pF) QET bias scanned from 150 to 40 uA in 0.2 steps, 5 seconds/step (no pause), other channels at default biases. DCRC4pB frontend gain 5, output gain 1, driver offset adjusted so that IbIs peak is near max, Charge biases are DCRC1/2 (Side2/1) = 0/0 V |
| 1520 | Move the QET bias scan series above to a new directory, byseries/07170807_2900/ |
| 1525 | Set QET bias to 0 on DIB3pB/DIB4pC/DIB4pA. This is Side2pC/D/E. These are the channels next to DCRC4pB=Side2pF. We'll try IbIs again and see whether the Side2pF curve shifts when its neighbors are s/c rather than biased to transition. |
| 1530 | Start QET bias scan (IbIs) sequence on DCRC4pB with DCRC4pB (Side2pF) QET bias scanned from 150 to 40 uA in 0.2 steps, 5 seconds/step (no pause), other channels at default biases except neighbor channels are s/c as described above. DCRC4pB frontend gain 5, output gain 1, driver offset adjusted so that IbIs peak is near max, Charge biases are DCRC1/2 (Side2/1) = 0/0 V |
| 1635 | The DAQ apparently crashed. MIDAS page is not functioning. The last QET bias series was 73 uA according to files in livedata/. |
| 1520 | Move the incomplete QET bias scan series above to a new directory, byseries/07170807_3000/ |