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| 40m Log |
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 Mon Mar 4 16:46:31 2013, yuta, Update, SUS, oplev calibration for PRM 
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 Tue Mar 5 17:09:30 2013, yuta, Update, SUS, oplev calibration for ITMY
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Tue Apr 2 15:58:40 2013, Jenne, Update, SUS, oplev calibration for ITMX, BS
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Tue Apr 2 16:13:10 2013, rana, Update, SUS, oplev calibration for ITMX, BS
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Tue Apr 2 16:55:34 2013, Jenne, Update, SUS, oplev calibration online for ITMs, BS, PRM
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Tue Apr 2 18:19:30 2013, Jenne, Update, SUS, BS, PRM oplev servos improved
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Tue Apr 30 22:40:57 2013, Jenne, Update, SUS, oplev XY-plots reflect new calibration
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Sun Sep 22 22:05:10 2013, rana, Update, SUS, oplev XY-plots reflect new calibration
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Thu Oct 3 01:06:48 2013, rana, jenne, Update, SUS, oplev XY-plots reflect new calibration
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Thu Oct 3 09:49:49 2013, Steve, Update, SUS, ETMY oplev laser is sick
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Tue Nov 5 19:55:12 2013, rana, Update, SUS, oplev XY-plots reflect new calibration
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Message ID: 9152
Entry time: Sun Sep 22 22:05:10 2013
In reply to: 8514
Reply to this: 9188
9351
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| Author: |
rana |
| Type: |
Update |
| Category: |
SUS |
| Subject: |
oplev XY-plots reflect new calibration |
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The ETMX oplev signal looks kind of dead compared to the ETMY. It has no features in the spectra and the SUM is pretty low.
I noticed that the cal fields are still set to 1. To get it close to something reasonable, I calibrated it vs. the SUSPIT and SUSYAW values by giving it a step in angle and using 'tdsavg' plus some arithmetic.
OLPIT = 45 urads/ count
OLYAW = 85 urads / count
These are very rough. I don't even know what the accuracy is on the OSEM based calibration, so this ought to be redone in the way that Jenne and Gabriele did before.
The attached image shows the situation after "calibration" of ETMX. This OL system needs some noise investigation. |
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