TITLE: 06/09 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
INCOMING OPERATOR:Patrick
SHIFT SUMMARY:

Quiet shift. There were a couple of small quakes that were of no consequence to H1. A2L was run towards the end of the shift as Livingston dropped their lock. Handing of locked/Observing H1 to Patrick. There was 1 RO alarm.
LOG:

23:10 Chandra to MY

23:23 Kyle called to inform me that he had driven past the barricade to the bunker with the pickup truck for gas cylinders.

23:25 Little Quake from around the Mariana Islands ~.05um

23:53 Chandra back

00:17 Wind is picking up in excess of 30mph over the last hour.

Attached are the before and after screen caps.

H1 back to Undisturbed @ 6:17UTC

Jenne and I reviewed the ISS status this morning. Jenne noticed that the RIN of the 2nd loop out-of-loop PD array shows increased coherence between 7~30Hz. I continued to investigate the comparison of the ISS state between now (6/8 19:00 UTC) and May 1st (5/1 1:00 UTC).

The 2nd loop out-of-loop floor level shows the stability of 1e-8 [1/rtHz] for both cases. However, the stability below 30Hz is worse than the one on May 1st. (Attachment 1. The blue curves are the current, and the red curves are the ones on May 1st.)

Attachment 2 shows the ISS QPD pointing. The yaw shows the shift from 0 to +0.3 while the pitch stayed ~-0.7. (Is that Okay?)

The 2nd loop PDs (inner/outer) exhibited 5~7% decrease, while the input power was also decreased 5%. So there looks some real decrease of the incident power on the PD exist. (Note tthat the QPD sum decreased -6.5%).

Can we change the features in the power spectrum by realigning the ISS PDs?

Based on what I know about this spectra, I don't see any outliers worth mentioning. Everything looks nominally ok.

The first figure shows the jitter peaks in DARM from last night and their coherence with PSL table accelerometers, along with the same plot from May 1. Little has changed.

The second figure is a reminder that the jitter is mainly driven by the chilled water flow to the HPO. The vibration from this flow didn’t change much between May 1 and June 8. However, it is greater than it was during O1. We might get significant improvement in DARM by turning down the flow to the specified minimum flow.

Because of the similarity in the jitter noise, Im guessing that only minimal PEM injections will be needed to characterize coupling in last night’s state before we continue commissioning and try to reduce jitter coupling.

TITLE: 06/08 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ed
SHIFT SUMMARY:

Main push in the morning was to get our Nominal Low Noise H1 back into OBSERVING.  H1 is now back in O2.  Had one lockloss toward the end of the shift which was recovered fairly quickly.  Had a bit of wind earlier in the day (& we rode through that).
LOG:

• 16:28-17:24 EX & EY Sweep (Jeff)
• 16:45 Peter out of Optics Lab
• 17:04 Military helicopter flyby at EY
• 17:00 -17:26 LVEA Sweep (Corey)
• 18:40 OBSERVING
• 20:40 TJ in Cleaning Room to get Cleaning Wipes
• 21:59 MY IP9 power supply swap (Chandra
• 22:16-23:01: Lockloss:  not sure of reason, has been windy all day.
  • At NLN had e-17 SDF diffs for ISC & ALS channels, so ACCEPTED them.
  • Ed noticed a glitch on the CDS Overview while I was getting ready to go to OBSERVING (several frontends had red & some related to timing....Dave reminded us this is a known glitch!).  :)

TITLE: 06/08 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing! at 66Mpc
OUTGOING OPERATOR: Corey
CURRENT ENVIRONMENT:
    Wind: 21mph Gusts, 15mph 5min avg
    Primary useism: 0.07 μm/s
    Secondary useism: 0.13 μm/s
QUICK SUMMARY:

Decent blast of wind today gave opportunity to assess the Roam5 position--I only moved there on Tuesday.

First plot shows the speed & direction for the CS and w/ Robert have learned the wind sensor has shifted out of position.  Don't know when but need to add about 90 degrees to reading.  Will fix Tuesday--FRS 8292.

The second plot shows the usual ASD and coherences between the ITMY and HAM5 (roamer) STS2s.  Roam5 position is getting pretty close to ITMY so no surprise that it is looking very similar.  While close, as previous positions have shown, no need to relocate the ITMY yet.  The quiet time in this measurement is 1000 utc 8 June; the windy period analyzed begins at 1700 utc 8 June.

One channel of IP9 power supply went bad on Wed. Swapped with same model - Varian dual vac - a used unit from IP6 (uses same CDS signal cables).

Closed WP 7024

Closed FRS 8289

Earlier this morning after the VEAs were swept, we had to go through a couple of other items before we could get back to OBSERVING:

1) DIAG_EXC

We had a stuck ASC Excitation channel (H1:ASC-INP1_P_EXC).  Dave confirmed this excitation was run briefly (seconds/minutes?) on Maintenance Day and has remained OFF ever since.  So Dave cleared this excitation test point and h1asc is no longer red on the CDS Overview.

2) DIAG_SDF (see attached screenshot of all diffs found this morning before they were addressed.)

We had handful of SDF Diffs in a few systems, but surprisingly not a whole lof of diffs.

• PSL:  ISS state request was ACCEPTED (consulted with Jason).
• SEI:  BS HEPI CPS diffs were NOT MONITORED by Hugh.
• LSC, SUS, ALS/ECAT diffs were ACCEPTED/NOT MONITORED according to Keita's alog.

Went over Past Tues Maintenance Open items

New Items for June 13th Maintenance (there was mention of possibly going over 4hrs)

1. Power cables at end stations for beckhoff (Fil)
2. Running pump CP3 MY dewar (kyle)
3. Crane (no gate valve closing needed) lifting platform for diode box back to H2 PSL where it is stored (Peter)
4. Move roaming seismometer (hugh)
5. HAM6 ISI model change/update for connecting OMC SUS to HAM6ISI. No DAQ restart (hugh)
6. PEM injections (Robert)

Closed meeting by going over work permits on the TV.

Vacuum staff is aware that annulus IP on HAM 11 is out of range again. Next Tuesday we will check it out. It failed recently but Kyle revived it with a tap. We may have a leak in the o-rings.

CP4 log file DOES NOT exist!

After getting Official OK from the LHO Run Coordinator (Keita Kawabe), and help with others to address a few tasks Keita wanted addressed, as of June 8th 18:40:06 UTC, H1 is now back to OBSERVING (H1 had been out of OBSERVING for a month & have now rejoined L1 in O2!).

LHO Operator Team:  Ops Observatory Mode Returns

This had been in PLANNED ENGINEERING for most of the last month.  Let's return to the habit of marking H1's Observatory Mode.

ACCEPTed changes:

H1:SUS-ITMY_R0_OPTICALIGN_P_OFFSET (from -150 to -400), this is for HWS and ghost beam (alog 36264).

H1:LSC-PD_DOF_MTRX_SETTING_4_1 and 4_7 (from [0.0091, -849] to [0.035, 0]). These are for PRC input matrix (alog 36473).

H1:ALS-C_COMM_A_DEMOD_LONOM (from  19 to 12). Don't know why it was 19dBm, 12dBm sounds good to me.

H1:ALS-X_LASER_HEAD_NOISEEATERTOLERANCE (from 0.5 to 0.6), H1:ALS-X_REFL_SERVO_COMOFS (from 0.375 to 0.25). These were all changed during the X end investigation.

H1:ALS-Y_REFL_A_DEMOD_LONOM (from 20 to -100) and B_DEMOD_LONOM (from -100 to -9), we used to use channel A but at some point A was broken and we switched to B. Since then the board was swapped and both work but we still use channel B.

H1:ALS-Y_VCO_REFERENCENOM (from 21 to 20).

H1:ALS-X_QPD_A_YAW_OFFSET, H1:ASC-X_TR_A_PIT_OFFSET, H1:ALS-Y_QPD_A_PIT_OFFSET, H1:ALS-Y_QPD_A_YAW_OFFSET, H1:ASC-Y_TR_B_PIT_OFFSET and H1:ASC-Y_TR_B_YAW_OFFSET,  no real change, just the numerical error on the order of 1E-17.

REVERTed changes:

H1:ASL-X_FIBR_LOCK_TEMPERATURECONTROLS_HIGH and LOW were temporarily set to  +-1300 during the X end investigation, doesn't look like we need to keep it, reverted them back to +-600.

H1:ALS-Y_REFL_SERVO_IN2GAIN was set to 1, don't know why but inconsequential, reverted to 0.

Measured the tuning coefficient of the laser crystal temperature for Prometheus S/N 2011B
(the one that was removed from EndX a week or so ago).

    The tuning coefficient is ~2.72 GHz/V for the green light and is fairly constant for
laser crystal temperatures from 24 degC to 34 degC.

    Increasing the laser crystal temperature decreases the laser frequency.  Increasing the
diode current also decreases the laser frequency.

On the Ops white board, there is a note of the last time the VEAs being swept on May 2nd.  

• 16:28-17:24 EX & EY Sweep (Jeff B.)
• 17:00 -17:26 LVEA Sweep (Corey)

Jeff mentioned needing to unplug unneeded items at the End Stations, and I unplugged unused extension cords & phones. For the H1 PSL, I went through the checklist to confirm the room is in "Science Mode".  I assume we do not do this for H2 PSL because it running at 100%.

Kyle, Gerardo, Chandra, John

CP4 liquid level control appears to be controlling normally now. The large dip in the red trace is likely due to warm gas in the liquid transfer line being pushed into the pump as the transfer line cools to liquid temperature. This means that the 20% setting was not enough to keep the transfer line cold. 

Blue is the control valve position.

The current setpoint is 96%.

It would be nice if DVWEB could provide up-to-the minute data.

The faulty regulator which turned out to be only a bad o-ring in the regulator itself, has been repaired, reinstalled, and air is flowing again. I unlocked the valves with Chandra watching the vacuum screen in the control room.
While I was repairing the regulator, Kyle was ordering a couple of new regulators for spares. 

Chandra and I also replaced the check valves on the corner station instrument air compressor.