Hanford Fire Maintenance was out today after the 2 false alarms at the LSB and determined that the fire alarm control panel is faulty. Apparently a control board has been fried. HFD has taken the panel out of service and will remain disabled until we can correct the problem. 

Meanwhile, I would ask that the swing and owl shift operators do a walk through of the LSB every 2 hrs for the rest of the week and then 2 hr checks for all 3 shifts on the weekend. Training the control room camera towards the LSB may also be a good idea.

PT110 (HAM6 pressure gauge) showed some sort of "hiccup" - see attached.

I lowered the exposure for the IO GigE cameras on the PSL from 4000 to 100.  At this new exposure the cameras are not saturated at 30W.  The beams are hard to see at 2W, but the SUM is still sufficient for reasonable x/y data.

Sheila, Fil, T Vo

We got a little time at the end of PEM injections to try a different method of disconnecting the ETMX ESD cables.  We had the sheildling box already installed at EX, so we went there and first disabled the HV ESD driver, then powered off the low voltage driver.  Fil grounded the sheilds of the ESD cables using the grounding box, and then disconnected the LL cable from the shielding box (on the chamber side) and connected it to the grounding box he made on monday.  The interferometer stayed locked and the noise didn't change, but just as we were touching the cables on the input side of the shielding box the interferometer unlocked.  It seems like something is extremly touchy here, which we already knew. 

IFO is locked at NLN, Intent Bit is Commissioning. Robert S. doing PEM injections from 16:00 to 20:00 (09:00 to 13:00PT). 

   HFD responded to fire alarm at LSB. Bubba and Richard were notified. Appears to have been a false alarm. 
 

PT343b at the X-mid went off at about 10:30 hrs. local.  I re-enabled it and it came back on in a few minutes.  John W. contacted Gil Hibbs who was in the X-mid VEA at the time.  Gil didn't think that he was near the area of the gauge.  Perhaps just coincidence.  We have had gauges along the X-arm turn off a few times this year when there was human traffic in the area of the gauge(s) but no causal determination has been shown.  Probably unrelated.  

John and I both got emails when the gauge dropped out but no texts (5 minute threshold for texts?)

   TJ swept LVEA before the start of commissioning. He unplugged one unused extension cord. 

TITLE: 08/09 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 53Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: No issues to report.
LOG:

14:36 UTC Ken pulling wire in OSB.

Have remained in observing. No issues to report.

TITLE: 08/09 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 54Mpc
OUTGOING OPERATOR: Ed
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 2mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.06 μm/s 
QUICK SUMMARY:

0.03 - 0.1 Hz seismic BLRMS is coming down from after earthquakes near Alaska.

07:25 UTC Lock clock not updating. Lock timer python script not running. Started. Screenshot attached.

TITLE: 08/09 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 53Mpc
INCOMING OPERATOR: Patrick
LOG: N/A

SHIFT SUMMARY:

Mid_Shift Summary (never got posted)

After many failed attempts to recover lock after the EQ(s), I performed initial alignment. The furthest I've been able to get thus far is LOWNOISE_ESD_ETMY. I had to pause at DC readout to tame some ETMX violin modes.

Lockloss problems included:

• LOWNOISE_ESD_ETMY - consistent problem
• Trouble with ALS - intermittent problem; still not reconciled.
• CARM_ON_TR - random. Happened once. Not atypical.

ETMX Violin Mode damping:

• I noticed that the VIOLIN_MODE_DAMPING_1 default gain for mode 4 was causing that mode to ring up.
  • it starts at 50 but this seems to cause it to ring up a bit. I immediately turned it down to 20 while damping mode 2...segue
  • mode 2 has no gain on it and has been ringing up higher than mode 4 according o the new DTT template. I immediately set this gain to 50 and perhaps this should be hard coded. After this damping takes effect mode 4 can be turned up to 50. It will need to be.
  • the screen shot below is how modes 1-5 should look ( at least for now?)
  • also, PEM awg was left running and had to be halted in order to set the intention bit.

Lots of phone time with Sheila got H1 back in business.

I'd like to suggest that next time an earthquake takes us down we wait to re-lock and assess any artifacts from the event before beginning maintenance on the IFO and then take it down on our own terms to begin making changes.

06:27 H1 back to Observing

23:50UTC whilst trying o acquire lock and 95% of the way there, a 6+mag EQ in Khazakstan‌ took us down. The Observatory mode wasn't switched to environment until 00:40. Apologies for the late action.

TITLE: 08/08 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 11mph Gusts, 7mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:

Currently trying to debug ALS troubles. Sheila is on the case.

SudarshanK, RichardS

We moved the Pcal beam back to their optimal position at 111.6 mm away from the center of the optic. The actual position of the  current Pcal beams (last column) along with the history of where they were are in the table below. The number quoted on the table are distance of Pcal beam (in mm) from their optimal position of [0, +/- 111.6] mm. 

We also re-centered the Pcal beams on the receiver side to relieve it from any clipping that was happening outside the vacuum. The spectra attached below shows no significant clipping on the Rx beams.

We will run a set of calibration lines (from 4501.3 - 1501.3 at 500 Hz interval) with this Pcal beam configuration for about a week.

T Vo, Sheila

We measured a transfer function from PCAL X to DARM this afternoon.  The attached screenshot shows a comparison of driving the ETMX ESD in the low noise state (with the settings that allowed us to transition to it from ETMY) and a drive to PCALX_DARM with the filters that Thomas copied from the ESD filter banks.  The red trace (ref 14+15) were taken with a gain of -150 in the PCAL filter bank.