This morning I did a few things:
First I made some injections to the EMTX ISI (WP5528). This data can be used to make a projection to the normal level of noise.
I made 3 guardian changes (WP 5533):
I added a new state to the OMC_LOCK guardian which tries to keep the OMC off resonance, and the ISC_LOCK guardian requests this for the early part of lock acquisition.
Added a function which checks that the ETM pit oplevs have an rms less than 0.5 urad before we attempt to start locking again. This will prevent tidal from acculating junk while the optics are still swinging.
Changed the decorators in the ISC_LOCK guardian so that we do not check the DRMI lock once CARM is locked on the transmitted power (this will reduce th confusion in lockloss logs).
I also copied a bunch of medm screens and filters in the ASC ADS system from LLO, as well as scripts with help from Carl, Adam and Marie. This is in preparation to try using Marie's modifications to Hang's A2L script.
Two more things:
We added bounce and roll bandstops to the HSTS and HLTS suspensions for the ASC inputs. The new filters are all in FM8 of the ISCINF filter bank for each suspension. They are 3rd order elliptic bandstops, for the HSTS we have a bandstop from 26.4 Hz to 28.6 Hz and one from 39.9 Hz to 41.9Hz. For the HLTS we have one from 27.1 to 29.1 and one from 43.7 to 45.7Hz.
Once we are in full lock, we will have to accept new SWSTATS that have FM8 on for ISCINF P and Y on MC1, MC3, PRM,PR2, PR3, SR3, SR2, and SRM. There will also be diffs for MC2, which already had notches which were not all engaged. Here we need to turn on FM6 and FM7 in ISCINF for P and Y.
This finishes WP 5517.
This did not get rid of the 40 Hz line in DARM that shows up durring the noise tunings guardian state (according to Evan). Durring noise tunings we engage the LSC FF paths, so these may be part of the problem.