• STATE of H1: Observing at 43Mpc
• CURRENT ENVIRONMENT:
  • Wind: 29mph Gusts, 22mph 5min avg
  • Primary useism: 0.15 μm/s
  • Secondary useism: 0.07 μm/s
• Wind has increased
• 3-10Hz anthropogenic has increased with the wind

TITLE: 07/16 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 48Mpc
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 21mph Gusts, 17mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY: locked since last night

TITLE: 07/15 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 48Mpc
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY:
LOG:

21:00 Kyle on site working on VPW

CH2M was supposed to knock down a stack today. Didn't see any evidence of it here on ground sensors or roof cam, but wall FOMs may not include relevant frequency bands? 
 

TITLE: 07/15 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 51Mpc
INCOMING OPERATOR: Jim
SHIFT SUMMARY:  Observing for 4+ hours.  No issues after IA and relocking. 
LOG:  None

After a bit of a extensive IA followed by a short lock, we are back to Observing.  The range is down from earlier in the week at around 50 MPc.

TITLE: 07/15 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Calibration
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 8mph Gusts, 6mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.06 μm/s
QUICK SUMMARY:  Relocking after mystery lockloss post input pointing changes.  Currently at DRMI_LOCKED and will attempt to proceed further.  Cheryl suggests that if this lock doesn't work out, another IA may be helpful.

TITLE: 07/15 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Calibration
INCOMING OPERATOR: Travis
SHIFT SUMMARY:
LOG:

• Jenne and ThomasV were moving spots when a large shelf of noise started
• the noise lasted about 5-10 minutes, and cooincides with a large bump in noise on the 3-10HZ anthropogenic noise, though no proof that that was the cause
• H1 lost lock
• last 3 hours have been realigning H1
• arms locked in green nicely, but they are no longer aligned to the IR, so X arm in IR started locking at 0.3
• I had to move ITMX and ETMX at the same time in pitch and yaw to recover the X arm in IR
• had to center ASC QPD with SR2 to get SRC to lock
• in full lock, arms in green looked good, about 1.0, but COMM and DIFF beatnotes were way off, COMM was 2.2, DIFF at 1.2
• I used PR3 to bring COMM up to 4. something
• locking ALS locked well
• find IR had the X arm at 0.7 and Y arm at 0.5, so I tweaked PR3 to bring IR are signals up to were guardian would move on
• locked PRM, it was low, aligned it
• DRMI locked and ASC engaged, so hopefully this will make it to NLN
• handing off to Travis

Jenne D. Thomas V.

After Robert finished his PEM injections, we wanted to try to change the pointing into the interferometer after IMC using the IM1 and IM3 to put IM4 Trans QPD back to the pre-EQ location, this seemed to help the range a bit as well as increase the power recycling gain.

Since we were convinced the pointing was satisfactory, we began to try to optimize the spot locations using the reverse A2L procedure using the June 18th data as a good reference.  However, this really screwed up the sensitivity so we're leaving the SOFT loop offsets back at zero.

So in the end, there's a bit of change to the input pointing, spot positions remain unchanged, A2L gains remain unchanged.

TITLE: 07/15 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Calibration
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.07 μm/s
QUICK SUMMARY:

• H1 locked and made it to NLN without removing OMC whitening
• Robert to EY for injections
• currently Jenne and ThomasV moving beam spots

TITLE: 07/14 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1:  CALIBRATION ("PEM Injections")
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY:

Violin Modes rung up while locking up!  Please watch Violin Modes to confirm Guaridan settings are OK (watch them around the VIOLIN_MODE_DAMPING_1 steps).
LOG:

• 20:17-21:02 OBSERVING
  • OMC_LOCK NO LONGER MANAGED  (to fix this, can:  "z write H1:GRD-OMC_LOCK_MANAGER ISC_LOCK")
  • Knocked out due to "Loading" a Safe.snap file to look at.  
  • Since we were out, I made OMC_LOCK re-managed by ISC_LOCK.
• 21:06-22:37 OBSERVING
• 22:37 Out of OBSERVING for coordinated L1/H1 PEM Injection work (Obs Mode:  CALIBRATION).
  • 22:47 Had a lockloss while Robert was doing ETMy ERM adjustments
  • Relocking now & looks like violin modes look OK.
  • Robert/Anamaria plan to have 1-2hrs of detector time.

Since there are no tasks on deck for H1, going to take this opportunity to get some multiple-coincidence data (w/ L1 & V1). 

There were some SDF Diffs:

• SUSITMy:  Related to MODE9 (this is due to violin mode damping), ACCEPTED
• ASCIMC:  Related to PZTs (this is due to IMC this morning), ACCEPTED

Guardian Note: 

Since OMC_LOCK was needed to go to MANUAL to REMOVE_WHITENING,

I made two BruCo scans, the first from before the Montana EQ at:

https://ldas-jobs.ligo-wa.caltech.edu/~brian.oreilly/bruco_1183356018/

the second from July 14th 0300 UTC at:

https://ldas-jobs.ligo-wa.caltech.edu/~brian.oreilly/bruco_1184036418/

Attached are the trends of the Oplevs (FAMIS #4736).

Do not see any pressing issues to worry about.

During current lock:

• Many OMC DCPD Saturation Verbal Alarms
• DARM Spectra clearly showed rung up violins

Jenne had me quickly maintain lock by:

• Going to OMC_LOCK node
• Go to MANUAL
• Select REMOVE_WHITENING state & wait for it to complete
• Select READY_FOR_HANDOFF
• Go back to AUTO  Edit:  Go to Manual (& Manager: will list this node as being managed by YOU, "User", etc.  You will want to change this to ISC_LOCK at some point*)

This calmed things down.  Then moved on to Violin Modes.

ETMx MODE4 (505.805Hz) was once again the largest rung up violin mode.  Have stayed with positive gain, and played with increasing it & also fiddling with phase, but not having luck with that yet.

* See Sticky Note for how to change the Manager Flag from "User" to "ISC_LOCK".

TITLE: 07/14 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Travis
CURRENT ENVIRONMENT:
    Wind: 4mph Gusts, 2mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.07 μm/s

Quiet at the moment with small useism & low winds.
QUICK SUMMARY:

Richard and Travis were troubleshooting IMC when I walked in.  Richard asked me to run the DOWN state (Guardian was in the INITIAL_ALIGNMENT state), and this locked up the IMC.  Will start an initial alignment from scratch now.

Note:  OBSERVATORY MODE is in the EARTHQUAKE state.  It was taken to OBSERVING last night.

WP 7075

To further proceed with the 72 MHz WFS (Wave Front Sensor)s (37042), today I made the hardware changes (mostly cabling), as summarized below, while the interferometer was in a violin-mode-damping state.

I am going to leave the hardware configuration as it is. If this new setup doesn't cause extra noise in the interferometer, they will stay semi-permanently.

Here is a summary of the new configuration:

• We have the 118 MHz RF modulation signal applied to the EOM with the full RF power (+33dBm@PSL rack).
• And we have the 72 MHz RF local oscillator signal sent to the HAM6 area, providing the 72 MHz WFS signals.

[The modifications]

• I plugged the new 72 MHz RF source to the unused RF Heliax cable so that the signal is sent from the CER to the ISC R3 rack (by HAM6).
  • Additionally, I newly installed a balun at the HAM6 side which was missing for some reason.
• At the ISC R3 rack, I routed the 72 MHz to the distribution amplifier which had been used for the 90 MHz demodulators.
  • In this configuration, the distribution amplifier feeds the WFS demodulators which had been also used for the 90 MHz but now with the 72 MHz signal.
• At the ISC R3 rack, the 90 MHz RF cable was rerouted so that it directly feeds the demodulator for ASAIR_B_RF90.
• I adjusted the RF power level by inserting appropriate RF attenuaters while looking at the EPICS readouts from the distribution amplifier and WFS demodulators.
• In the LSC, I changed the FM8s for LSC_ASAIR_B_RF90_(I|Q) from +3 dB to -1 dB in order to keep the same level of signals. See the attached screenshots for the changes that I made.
  • Also, I have changed the digital demodulation phase of ASAIR_B_RF90 such that the signal is maximized in I when the interferometer was locked at 30 W.

Last entry from Roam position 7, see 37334.

At Roam8, a meter or so further +X from Roam7, the spectra would suggest this location is not as quiet (wind response tilting) as Roam7.  However, this wind is from the NNW rather than our usual S or SW for previous views.  Also, while the Y dof seems more tilty for STS2-C (HAM5), at the lowest frequencies, HAM5 seems less tilty below 100mHz for the X dof.  I'm not sure if this conclusion is valid when the sensor is noisier during the quiet period???

Attached are the usual wind plot and sensor spectra.  The quiet wind time is 11 July 1200utc and the windy time begins 0230utc on 11 July.

J. Kissel

Just posting an update on this -- the H1 PCAL Y RX PD reported displacement continues to decay, likely due to some temperature dependent clipping. This had been a part of the FRS Ticket 8328, but there's little we can do during an observation run to fix this. We've since closed the issue as LONGTERMFIX. AS such, I'll raise to an integration issue, and mark as WHEN VENT (similar to the promised work in Integration Issue 4700).

For now, recall that we've switched over to using TXPD as the calibration reference (see LHO aLOG 37166).