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Reports until 16:29, Tuesday 27 February 2024
H1 TCS
camilla.compton@LIGO.ORG - posted 16:29, Tuesday 27 February 2024 (76008)
CO2X Rotation Stage Recalibrated

The CO2X rotation stage needed recalibration after the laser swap in 75766. Last done in 74138.

Started with a "search for home" on both rotation stages as this should be done after every Beckhoff reboot. With annular mask in, CO2X has max 4.9W and CO2Y has max 8.8W.

CO2X: When I requested the nominal 1.7W on CO2Y it gave us 1.65W, power is still changing so won't recalibrate CO2X 76007.

CO2Y: Followed the README.txt file in /opt/rtcds/userapps/release/tcs/h1/scripts/RS_calibration/, got attached plot. Did this with annular mask in. Checked mimuim power was good but initally 1.7W requested only gave us 1.6W so I further adjusted H1:TCS-ITMX_CO2_LASERPOWER_POWER_IN  channel, now 1.7W requsted gives 1.7W. sdfs accepted.

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