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 Thu Jan 22 23:36:50 2009, pete, HowTo, oplevs, arm cavity oplev calibration 
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 Fri Jan 23 12:48:12 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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Thu Jan 29 17:24:41 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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Sat Mar 14 22:53:12 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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Fri Mar 20 15:37:58 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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Thu Mar 26 09:08:18 2009, Kakeru, Update, oplevs, arm cavity oplev calibration
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Message ID: 1259
Entry time: Thu Jan 29 17:24:41 2009
In reply to: 1249
Reply to this: 1403
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| Author: |
Kakeru |
| Type: |
Update |
| Category: |
oplevs |
| Subject: |
arm cavity oplev calibration |
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I calibrated optlevs again. My previous work has a lot of mistakes, so ignore it.
ITMX pit: 195 microrad/ct
ITMX yaw: 185 microrad/ct
ETMX pit: 303 microrad/ct
ETMX yaw: 296 microrad/ct
ITMY pit: 192 microrad/ct
ITMY yaw: 141 microrad/ct
ETMY pit: 294 microrad/ct
ETMY yaw: 301 microrad/ct
(For ITMY, the data is low quality)
My calcuration and Peter's(based on Royal's report) is different in two point.
i) Royal uses some geometrical factor to calibrate ITM.
ii) Royal fits data to exp(-a^2/(2*w0^2)), and I fit data to exp(-a^2/w0^2).
When I calculate with modification of these differences, my result became almost same value of Peter's one.
Now we are discussing which equation is correct.
But we must do some laser works before it... |