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Entry  Thu Jun 12 01:51:23 2008, rob, Update, Locking, report lock_control_sequence.png
    Reply  Thu Jun 12 15:09:33 2008, alan, Update, Locking, report 
       Reply  Thu Jun 12 15:55:15 2008, rob, Update, Locking, report 
Message ID: 533     Entry time: Thu Jun 12 15:55:15 2008     In reply to: 532
Author: rob 
Type: Update 
Category: Locking 
Subject: report 

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.
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