[The LHO H1 Team]
After a rough day and a half, we're back Observing!
Throughout this, we have reset our initial alignment setpoints, see first attachment.
Also, we have caught a tricksy situation with guardian that if we do an initial alignment and then the DRMI never has to run its down state (as happened just now, since we are locked on our first attempt!), the PRM M2 coil drivers will be left in their higher noise state. Because we do not believe that we can switch it while locked (and we're not willing to risk a lockloss), we are leaving the PRM with the slightly higher noise coil driver state for this lock, and modifying guardian so that this cannot happen again.
However, this means that next lock, we'll need to re-accept the correct values in SDF (the setpoint values in the second attachment are the correct ones that we'll have to re-accept).
As Jenne said, we have kept the inital alignment references that we changed yesterday 51307 so that we are acquiring with the spots in the center of the optics. This is working well for lock acquisition, and this morning we allowed all 3 of the ADS loops to converge before we moved the spots to their final locations. We moved them and waited for convergence before increasing the ADS gains, so this will add a little time in the ENGAGE_SOFT_LOOPS state. We've not added this in the guardian, but haven't loaded the change or tested the new code.
Tagging OpsInfo just in case we have a beautifully long lock stretch until 3a.
Note: This lock stretch will have a non-nominal SEI Configuration. We are using WINDY_NO_BRSX as the BRSx is still glitching.
Since the PSL computer just went down and we're out of lock, we've loaded the new code, so we'll get to excercise it shortly.