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.