ryan.short@LIGO.ORG - posted 17:25, Thursday 22 May 2025 - last comment - 17:28, Thursday 22 May 2025(84553)
PSL Rotation Stage Calibration
After ISCT1 alignment worked wrapped up for the day, I ran a calibration sweep of the PSL rotation stage following the steps outlined in alog79596.
The measurement file, new calibration fit, and screenshot of newly accepted SDFs are attached.
| Power in (W) | D | B (Minimum power angle) | C (Minimum power) | |
| Old Values | 94.908 | 1.990 | -24.819 | 0.000 |
| New Values | 95.252 | 1.990 | -25.787 |
0.000 |
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Interestingly, even after updating the calibration factors and searching for home on the stage, there are still 2.2W into the IMC with a 2.0W request, so this may need revisiting later.