2019/11/24 (Sunday)
| Setup | DIB1/2/4 → 3.2 MHz filters → cable 1/2/3 → gender changer 1/2/3 → movable source controller/board with external Feedback resistor/nothing → DCRC55(1)/DCRC33(2)/DCRC50(3) |
|---|---|
| Overnight | Ran a script that moved the source a few steps every few min, then did a hot Al flash. We started just past the first blocker; this script should push us out to y=-24.3 mm and end at 13:13. |
| 1235 | MB = 48.2% |
| 1320 | Move sequence is finished. Tower = 63 mK. Do a hot Al flash for 90s using the sequence Al_flash.msl. Tower peaks at 1.8 K. |
| 1400 | Tower = 43 mK and cooling. Check the phonon channels - they all look good! |
| 1442 | Tower/MC/Coldplate = 34.7/29.9/184 mK, Still = 1.46 K/ 0.120 mbar / 0 mW, G1/G2= 249/244 mbar, 1K Pot = 1.63 K / 20±1 mbar. MB = 45.1% |
| 1449 | Fill LN2 cold trap bath. |
| 1450 | Turn off motor power supply, power down arduino. Check that Keithley meter is not connected to breakout box. |
| 1458 | Check the channels - they all look good! |
| 1501 | Start 1x S1/S2=-4/+4,+4/-4 V loop of 30 min Bkg data series, Driver gain = 1, with 1000 initial randoms, with 30s flashes and 30 min cooldowns trigger on DCRC2pA/B/C = 8/8/8 ADC using sequence qbias_mp4_pm4_loop.msl |
| 1640 | Power arduino and connect to it via telnet. Arduino responds to two “marco”s with “polo”. Turn on motor power supply, which is set to 6.4 V. In telnet session set dwell to 40 ms. Scope is on. |
| 1640 | Edit stepper_loop.py, change “nrepeat” from 255 to 215. |
| 1641 | Move 215x-4 steps with 4 min wait in between using stepper_loop.py. Pipe this output to /home/mast/cdms/arduino/stepper_loop.out. This should push us out to y=-38.5 mm. It will end at 7:01 tomorrow morning. |