ALL TIMES IN UTC
Arrival: IFO is unlocked. Sheila and Evan in and out of the LVEA taking ASC measurements. Wind calm. Seismic calm. Patrick on Evening duty.
On Site: Kissel, Balmer, Driggers, Hall, Dwyer, Hoak, Cahillane and Darkhan
ACTIVITY LOG:
10:24 ETMY saturation
11:25 SRM Saturations (4)
11:26 SRM Saturations (8)
14:26 Pepsi on site
14:30 Fire Protection on site
LOCK LOG:
8:10 Locked at N_L_N - 68Mpc
added OMC whitening - 72Mpc
after adding whitening, OMC guardian state didn’t return to ‘READY_FOR_HANDOFF’. This left the ‘Guardian top level state OK’ RED on the ODC MASTER screen. The remedy was to re-select ‘READY_FOR_HANDOFF’.
10:18 OIB/OOM set to Undisturbed/Observing
Evan cleaned up SDF diffs with the exceptions of: ODCMASTER, CALCS and ASC
13:19 Setting OIB/OOM to Commissioning for Richard to do some PEM noise investigation
1Hz comb in PRCL
13:29 LockLoss - Richard in LSC RF racks fooling with 45Mhz cable
13:31 Begin sequence
DRMI - Having some difficulty
after PRMI align, SRM watchdog tripped. Untripped and damped to settle it.
14:42 DRMI locked
14:48 Locked at DC readout for Richard to plug the 9Mhz back in
45Mhz still connected and no sign of 1Mhz comb
15:04 Locked at N_L_N - 68Mpc
engaged OMC whitening - ~70Mpc
Summary:
Environmentally calm tonight.
From 7:00 to 10:18 commissioners had the IFO
IFO locked once and remained locked for 5+ hours @ ~72Mpc
ETMY glitched twice: 10:24, 12:08
SRM glitched as well. 12 Verbal Alarms: 11:25, 11:26
NUC1 Seismic FOM crashed. In an attempt to restart the computer was very slow to non-responsive. (as bad as the mini-Mac that used to be where NUC0 is now). I got the DMT running but it’s not configured correctly and I don’t know how to.
After the lockloss at 13:29 I’m having difficulty getting DRMI locked. PRMI was optimized but some strangeness was going on after I got the power maximized BEFORE I re-aligned SRM. it almost looked as if another optic was “swinging” in to join them and then it would break the PRMI lock.
Richard put baluns on the 9Mhz and the 45Mhz PEM lines which seems to have removed the 1Mhz comb problem.