ryan.short@LIGO.ORG - posted 09:42, Tuesday 05 December 2023 (74597)
PSL Rotation Stage Calibration
Since the PSL rotation stage has not been calibrated since July, I took the time to do it again this morning during maintenance. The process was as follows:
- Took IMC offline and paused LASER_PWR guardian
- Ran the script /opt/rtcds/userapps/release/psl/h1/scripts/RotationStage/MoveRotationStage.py to create PSL_rotStageCalib_5Dec2023.txt (attached)
- Changed PSLvals in CalibRotStage.m for correct file name then ran to create calibration curve (attached) and get new fit values (in table)
- Input new fit values into calibration and accepted new values in SDF (screenshot attached)
- Searched for HOME on rotation stage
- Resumed LASER_PWR guardian to go back to 2W input power
| Power in (W) | D | B (Minimum power angle) | C (Minimum power) | |
| Old Values | 100.917 | 1.990 | -24.827 | 0.000 |
| New Values | 102.9407 | 1.990 | -24.803 |
0.000 |
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