TITLE: 08/08 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 115Mpc
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: relocking was an effort, with some manual alignment in OFFLOAD_DRMI_ASC, calibrations ended about 2 hours ago, Observe since then
LOG:

Activities:

• 22:57 - Niko and Ethan to the optics lab
• 23:00 - Jenne working on relocking
• 23:48 - Kyle back from mid stations
• 00:23 - Niko and Ethan out of the optics lab
• 00:30 - Timesh to the optics lab
• 01:00 - Jonathan here, giving a tour, in the Control Room, and then to X arm overpass
• 03:14 - Timesh to the optics lab
• 04:09 - Timesh out of the optics lab

Locking:

• ISC_LOCK state: CARM_TO_REFL  (Aug 7 23:57:31 UTC)
• DRMI Unlocked  (Aug 7 23:57:39 UTC)
• ISC_LOCK state: INITIAL_ALIGNMENT  (Aug 7 23:58:46 UTC)
• ISC_LOCK state: LOCKING_ARMS_GREEN  (Aug 8 00:16:02 UTC)
• ISC_LOCK state: CARM_TO_TR  (Aug 8 00:26:52 UTC)
• DRMI Unlocked  (Aug 8 00:27:01 UTC)
• ISC_LOCK state: LOCKING_ARMS_GREEN  (Aug 8 00:28:09 UTC)
• ISC_LOCK state: ENGAGE_RF_VIOLINS  (Aug 8 00:39:56 UTC)
• DRMI Unlocked  (Aug 8 00:39:59 UTC)
• ISC_LOCK state: DRMI_LOCKED_CHECK_ASC  (Aug 8 00:48:52 UTC)
• E_X  (Aug 8 00:49:48 UTC)
• DRMI Unlocked  (Aug 8 00:49:48 UTC)
• ISC_LOCK state: LOCKING_ARMS_GREEN  (Aug 8 00:51:34 UTC)
• Incoming earthquake from Tajikistan  (Aug 8 00:53:33 UTC)
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 00:56:31 UTC)
• ISC_LOCK state: ACQUIRE_PRMI  (Aug 8 01:01:32 UTC)
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 01:04:17 UTC)
• ISC_LOCK state: ACQUIRE_PRMI  (Aug 8 01:09:18 UTC)
• 01:13:03 - SEI to EQ
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 01:13:39 UTC)
• ISC_LOCK state: RESONANCE  (Aug 8 01:40:19 UTC)
• DRMI Unlocked  (Aug 8 01:41:03 UTC)
• ISC_LOCK state: LOCKING_ARMS_GREEN  (Aug 8 01:42:09 UTC)
• 01:42:51 - SEI back to WINDY
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 01:46:33 UTC)
• ISC_LOCK state: ACQUIRE_PRMI  (Aug 8 01:46:35 UTC)
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 01:50:38 UTC)
• ISC_LOCK state: ACQUIRE_PRMI  (Aug 8 01:55:39 UTC)
• ISC_LOCK state: ACQUIRE_DRMI_1F  (Aug 8 01:59:41 UTC)
• ISC_LOCK state: OFFLOAD_DRMI_ASC  (Aug 8 02:04:43 UTC)
  • paused here to adjust PRM, PR2, SRM, SR2, also paused here yeaterday to adjust these optics, alog 51089
  • watching POPAIR B RF18, and POPAIR B RF90
  • the DC increase in RF18 was small, but changes reduced the noise of the signal, and are easily seen in the attached plots
  • both plots are the same channels, one is zoomed out to see all slider changes, one is zoomed in to see manual alignment changes
  • in the first plot, the first big step in alignment sliders is the OFFLOAD, my changes are after
  • slider changes: PRM P -7, PRM Y -0.2, PR2 P +0.1, PR2 Y -0.2, SRM P +1.0, SRM Y -1.0, SR2 P -0.3, SR2 Y +0.1
  • changes also reduced the noise of the PR_GAIN signal
  • total adjustment time was less than 10 minutes
• ISC_LOCK state: CHECK_AS_SHUTTERS  (Aug 8 02:13:07 UTC)
  • ISC_LOCK state: CARM_TO_TR  (Aug 8 02:13:44 UTC)
  • ISC_LOCK state: CARM_TO_REFL  (Aug 8 02:16:28 UTC)
  • ISC_LOCK state: RESONANCE  (Aug 8 02:16:39 UTC)
  • ISC_LOCK state: ENGAGE_RF_VIOLINS  (Aug 8 02:17:43 UTC)
• 02:19 - SUS Violin guardian set to DAMPING_ON_SIMPLE, violins were very rung up, at 500Hz and 1000Hz
  • JeffK and I worked on damping
• ISC_LOCK state: NOMINAL_LOW_NOISE  (Aug 8 02:36:38 UTC)
• ISC_LOCK state: NLN_CAL_MEAS  (Aug 8 03:19:52 UTC)
  • calibrations
• ISC_LOCK state: NOMINAL_LOW_NOISE  (Aug 8 04:11:47 UTC)
• ISC_LOCK state: NLN_CAL_MEAS  (Aug 8 04:21:37 UTC)
  • calibrations
• ISC_LOCK state: NOMINAL_LOW_NOISE  (Aug 8 05:04:33 UTC)
• 05:06 - SUS Violin guardian set to Idle and then DAMPING_ON_DC
  • some gains are changed, all modes either decreasing, or not increasing
• Intention Bit: Observing  (Aug 8 05:07:03 UTC)