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| 40m Log |
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 Thu Jun 12 01:51:23 2008, rob, Update, Locking, report 
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 Thu Jun 12 15:09:33 2008, alan, Update, Locking, report
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Thu Jun 12 15:55:15 2008, rob, Update, Locking, report
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Message ID: 533
Entry time: Thu Jun 12 15:55:15 2008
In reply to: 532
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| Author: |
rob |
| Type: |
Update |
| Category: |
Locking |
| Subject: |
report |
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| Quote: | | Rob: Awesome figure. As you can imagine, I have lots of questions, and hope that you will consider this figure to be the beginning, leading to ever-more detailed versions. But for now, I just want to ask whether you understand *what* is twitchy, and what the twitchiness does to prevent you from taking this further? |
I definitely don't understand what's twitchy, but I have suspicions. Tonight we'll try to start by revisiting the other loops (the non-CARM loops) and see how they're dealing with the changing power levels. It may be that the DARM loop is going unstable due to gain variations (due to either increasing power or to rotation of demod phase) or it could be the PODD (or SPOB) saturating with increased power in the recycling cavity. I just hope the glitchiness doesn't have a digital origin. |