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Reports until 10:06, Wednesday 03 April 2019
H1 TCS
thomas.shaffer@LIGO.ORG - posted 10:06, Wednesday 03 April 2019 (48201)
Changed TCS CO2Y rotation stage calibration

The power guardian couldn't get to the requested power, this is normally solved by slightly adjusting the "power in" (H1:TCS-ITMY_CO2_LASERPOWER_POWER_IN) in the calibration. I changed this from 4.7 to 4.6

I'm not sure why we have to change this as frequently as we do. X hasn't been changed since Aug 2018, where as Y was changed on: March 26, 20, Feb 16, Jan 7. I thought that the laser power maybe changing more for the Y, but this doesn't seem to be the case either. I worry that something on table is changing causing the power in to be different.

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