Lock back up at 12:35 local. Jeff spent the last couple of hours changing DARM gains and trying other fixes, but we've reverted everything now and the lock came right back. No idea. Range is even a little better, it was 8-is when I came in, it's now a solid 10.
I should add, we did change the end station beam direction ISI St1 blends from 90 to 45 mhz blends.
jim.warner@LIGO.ORG - 15:28, Saturday 02 May 2015 (18183)
We are still having difficulty acquiring lock, I've switched the intent bit, I'll revert when we re-acquire.
Lock back up at 12:35 local. Jeff spent the last couple of hours changing DARM gains and trying other fixes, but we've reverted everything now and the lock came right back. No idea. Range is even a little better, it was 8-is when I came in, it's now a solid 10.
I should add, we did change the end station beam direction ISI St1 blends from 90 to 45 mhz blends.
Another lock loss at 15:05 local, so about 2.5 hours for that lock.