elenna.capote@LIGO.ORG - posted 15:58, Monday 05 May 2025 (84261)
Positions of Optics for PRMI
These values are the difference in the alignment now versus right before the vent on April 1.
| Mirror | HEPI RZ |
ISI RZ |
Top Mass Pitch | Top Mass Yaw | Oplev Pit | Oplev Yaw |
Total (urad) (HEPI + ISI + OSEM) |
| PRM | -1.9 urad | 0 | + 10 urad | -2 urad | N/A | N/A | +10 pit, -4 yaw |
| PR2 | -0.4 urad | +5.8 urad | +3 urad | +3.5 urad | N/A | N/A | +3 pit, + 8.9 yaw |
| PR3 | -1.9 urad | 0 | -14 urad | 0 | 0 * | +1.5 urad * | -14 pit, -1.9 yaw |
| BS | 0 | -4 urad | -1.5 urad | +2 urad | -1.5 urad | +23 urad | -1.5 pit, -2 urad |
| ITMX | 0 | -0.5 urad | +9 urad | +12 urad | +2 urad | +2.5 urad | +9 pit, +11.5 yaw |
| ITMY | 0 | -3 urad | -60 urad | -5 urad | -6 urad | 0 | -60 pit, -8 yaw |
* we do not trust this oplev!
We aligned optics well enough to see flashes in PRMI, although it does not look very well aligned. Camilla can see the PRMI flashes out of the HAM1 viewport. We are missing the periscope, so we think the periscope should be moved. The flashes are very weak- we will need to turn up the input power to do any more work on this path.
Flashes from 21:45 UTC to 23:00 UTC May 5.