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AOS (Baffles & Beam dumps)
tomotada.akutsu - 0:00 Thursday 15 March 2018 (4458) Print this report
Updated calibration factors of oplev of the WAB at IYC

Miyo, Akutsu

Have changed the oplev calibration factors at around 9:44 today (2018 March 14) JST. So please don't be surprised when you find jumps in the data.

  • Pitch: [WAS] 1100 -> [IS] 75.75
  • Yaw:  [WAS] 1000 -> [IS] 83.33

[WAS] status can be seen in the attached photo.

Method

It is the simplest method, even though I know there is more detailed one. Calling the measurement results here as "A", and the oplev length to be "L" ~ 3000mm according here,

Counts = 1/(A*2*L) * (displacement on the QPD)

so, we input the "1/(A*2*L)".
 

The 3000mm should be increased more as we need to consider more length outside of the viewport.

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