Reports until 16:45, Wednesday 24 April 2019
H1 CAL
yannick.lecoeuche@LIGO.ORG - posted 16:45, Wednesday 24 April 2019 (48736)
Pcal EX End Station Calibration

[Sharan, Sundae, Niko]

We went to EX and performed an end station calibration during Tuesday maintenance. Our resulting value deviates from previous measurements by about one tenth of a percent, we think potentially because the Working Standard was mistakenly placed in front of the RxPD rather than in its place. We will take another EX measurement next week to check our value. Rx beam alignment looks good.

Sensor Jan. 22 Mar. 05 Mar. 12 Apr. 23 Apr. 23 / mean of prev. meas.
Tx (V/V) -0.558870 -0.558129 -0.558519 -0.559161 1.00117
Rx (V/V) -0.720173 -0.720980 -0.720198 -0.721624

1.00096

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