camilla.compton@LIGO.ORG - posted 16:29, Wednesday 17 April 2024 (77255)
CO2Y and CO2X Beam Scan
TJ, Camilla. WP 11811
Yesterday, we repeated the 76715 CO2 beam scan using a razor blade on a 25mm transition stage while measuring the power transmitted to our PD (channel H1:TCS-ITMX/Y_CO2_LSRPWR_MTR_OUTPUT).
We realized that some of the blocked beam was transmitted through a hole in the razor blade in our first set of measurements (changed radius measurement ~1mm) so the CO2X 76715 are not as trusted.
All data taken for CO2X and CO2Y attached and summarized below:
|
Position Downstream of CO2Y Annular Mask [mm]
Downstream = (+), Upstream = (-)
|
Beam Raduis [mm] | Prev. measured with hole in razor |
| - 238 | 11.39 | 12.34 |
| 0 | N/A | 11.27 (think hole was covered) |
| +143 | 10.77 | 11.17 |
| +194 | 10.61 | 11.39 |
|
Position Downstream of CO2X Annular Mask [mm]
Downstream = (+), Upstream = (-)
|
Beam Raduis [mm] |
| + 32 | 9.85 |
| + 133 | 10.01 |
| +184 | 10.49 |
Non-image files attached to this report
