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 Wed Jan 6 22:47:41 2021, gautam, Update, ALS, Noisy ALS 
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 Thu Jan 7 19:16:11 2021, gautam, Update, ALS, Noisy ALS
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Thu Jan 7 20:07:27 2021, Koji, Update, ALS, Noisy ALS
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Thu Jan 7 21:16:22 2021, gautam, Update, ALS, Noisy ALS
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Thu Jan 7 23:25:19 2021, Koji, Update, ALS, Noisy ALS
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Fri Jan 8 20:01:11 2021, gautam, Update, ALS, Noisy ALS
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Message ID: 15754
Entry time: Thu Jan 7 21:16:22 2021
In reply to: 15753
Reply to this: 15755
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| Author: |
gautam |
| Type: |
Update |
| Category: |
ALS |
| Subject: |
Noisy ALS |
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I thought about it, but wouldn't that show up at the AUX PDH error point? Or because the loop gain is so high there we wouldn't see a small excess? I suppose there could be some clipping on the Faraday or something like that. But the GTRX level and the green REFL DC level when locked are nominal.
| Quote: |
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How about resurrecting the PSL table green beat for the X arm to see if the non-fiber setup shows the same level of the freq noise (e.g. the PDH locking became super noisy due to misalignment etc).
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