TITLE: 07/17 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
While the Earthquake slowly rolled through the site CDS took some time to do some updates and restart the Data concentrator 18:02 UTC 
19:48 UTC CDS seemed to recover.

Ryan C and I were wondering why ISC_LOCK wouldn't get to idle. He traced it through ISC_Lock log and found that the ETM X&Y ESD drivers has not recovered from the power outage. Marc went down there to rest the High voltage. But they still are not working properly and there is a very slow barely noticeable increase to the  H1:SUS-ETMX_M0_FASTIMON_F1_OUT16 channles that seems to be growing. Rahul has been contacted and he's going to look at it and he may leave it in safe if it continues to grow in amplitude.

IMC locking team has been trying to get it locked but has been running into chris-crossed-overed settings and are still activley working on locking IMC.

VAC Team have made gains in getting the vacuum pressures to continue to go down, so Pump down Continues!

Jack team is cleaning up for the weekend.

LOG:                                                                                                                                                                                                                                                                          

As part of WP 13402 we did some daqd restarts today.  These were to pull in changes to the EDC to reflect the reconfiguration of the DAQD system and the additional channels generated by the safety system update.

In addition on review of the system wiring, we switched the location of two fibers on h1daqdc1 to keep it consistent with the fiber layout on h1daqdc0.   The fibers where the link to the front end data stream, and the live data stream to the NDS2 systems.

This was the first time that we had done a channel list change since updating the daqd config.  This found an error in our puppet configuration.  Normally when the data concentrator machine starts up it grabs the channel list from the main copy, and stores a copy of the channel list that all the other daqd in its leg refer to.  This keeps a stable copy of the channel list that only updates on restarts.  During the puppet reconfiguration, this addition to the startup sequence got lost and was not applied on h1daqdc1.  It didn't show itself until we did the restarts with a new channel list, at this point the frame writers where disagreeing on the channel list.  This has been fixed in our puppet config now.

After some minor cleanups, a fiber re-arrangement, and several restarts and debugging the daqd system is running, the edc is connected to all its channels.

Ryan Short, Rahul Kumar

We mechanically offloaded SUS ZM4 (PSAMS) in Yaw dof. (rotating the suspension cage clockwise on the table) to relive it's alignment slider values which were taking up too much of DAC output (20k counts approx.).

At first we marked the beam position on the periscope and the two irises on SQZT7 table. We then set the Yaw sliders to zero on ZM4. The beam moved a little but was still pointing on the periscope and was not too bad on the two irises. Then, I rotated ZM4 (clockwise) until the beam returned to its nominal position (Ryan kept an eye on the beam position on the iris). The beam looked great on the periscope as well. We then checked how the beam looked on ZM4, ZM5 and the beam divertor in HAM7 chamber and they looked well centered on the optic. 

I re-attached all five dog clamps on ZM4.

Ryan is still fine tuning the alignment using sliders - however, the DAC output on both ZM4 and ZM5 are now around 10k and 12k respectively.

IMC_LOCK guardian thinks that the IMC is never locked even when it momentarily locks because IMC-MC2_TRANS_NSUM_OUTPUT is smaller than threshold.

I noticed that the MC2_TRANS_NSUM_OUT_DQ stayed negative all the time when the IMC was flashing (mismatched_whitening2.png).

I checked the whitening of the segments and somehow stage 1 whitening was on but the anti-whitening was off (mismatched_whitening.png).

I pressed "OFF" and then "ON" for stage 1 on the MEDM screen to make the whitening/awhitening in sync again. I made the stage 1 whitening OFF after this.

I haven't checked when the problem started but most likely at the time of power outage.

I'll ask the operator to check if there are other mismatches.

I took advantage of this morning's earthquake to tweak beam alignment into both the PMC and RefCav, as well as tweaking the amplifier injection currents to attempt to improve both PMC Trans and Refl.

With the ISS OFF, I started with the PMC.  At the start PMC Trans was ~102.0 W while PMC Refl was ~29.5 W.  After the alignment tweak PMC Trans improved slightly to ~102.9 W while PMC Refl improved to 28.8 W.  I then tweaked the amplifier injection currents as shown below:

At the new injection currents PMC Trans is now ~105.0 W and PMC Refl is ~28.5 W.  At this point, to get better we will need a few days to redo mode matching into the PMC.

With the PMC done, I turned the ISS ON an adjusted the RefSignal until the diffracted power % was ~4.0%; this is a RefSignal of -1.97 V.  I then tweaked beam alignment into the FSS RefCav.  Starting TPD was 0.388 V and final TPD is 0.507 V.  To improve this further we will need to do an on-table alignment of the FSS beam in the PSL enclosure.

TITLE: 07/17 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 17mph Gusts, 13mph 3min avg
    Primary useism: 5.04 μm/s
    Secondary useism: 1.84 μm/s 
QUICK SUMMARY:

Vacuum looks to be still pumping down. 
I read that on last night's EVE shift there were some IMC locking attempts! How exciting!
Unfortunately Now Every thing is getting tripped by a M 7.3 - 48 km SW of Aquiles Serdán, Mexico.

TITLE: 07/17 Eve Shift: 2330-0200 UTC (1630-1900 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY: After alignment on IOT2L wrapped up, Jennie, Keita, and I made some attempts at locking the IMC, but ultimately were unsuccessful (see alog91086 for details). I've left the IMC and JAC Guardians in 'DOWN', and I unlocked the ISS while the PSL thermalizes a bit more overnight. The LVEA remains Laser HAZARD and pumpdown of the corner and HAM1 volumes continues.

Sheila, Camilla, Ryan S, Cory (Fellow), Rahul

Given below is the summary of beam alignment work we performed in HAM7 today.

After locking the SQZ beam and the OPO we first checked the alignment on the OPO - it looked good and there was no clipping anywhere. Then we checked the beam on ZM4 and ZM5. Camilla measured the incoming beam on ZM4 to be 5.5inches approximately and it looked well centered on the iris in front of it.

On ZM5 the beam was very high on the optic (we had to remove the face baffle to be able to see the beam on the PSAMS mirror). At first we tried using  ZM4 sliders to center the beam on ZM5, but ran out of range. Hence, we mechanically adjusted ZM4 in pitch (using the pitch adjuster) to bring the beam down on ZM5 and center it (Camilla took pictures for reference). 

The beam from ZM5 to the beam divertor was off in both pitch (beam too low) and yaw (too wide as well, almost missing). We first adjusted ZM5 in yaw (mechanically) to center it on the beam divertor - we also had to push it slightly (less than 3mm) side ways for this purpose. With Yaw looking good on the beam divertor, we tried using sliders for Pitch but quickly ran out of range. I then used the mechanical pitch adjuster, but even that was not enough (ran out of range here too). Hence, I added 50grams of weight to the rear side of ZM5 intermediate mass to pitch it up (by 0.5inch) on the beam divertor. This worked and the beam looked good both in pitch and yaw on the beam divertor. 

Finally Ryan S checked the beam on the periscope and the two irises on SQZT7 table. It was off in Yaw - so I applied a negative yaw (clockwise rotation) on ZM5 mechanically (again the sliders were not enough for this big move) using dog clamps and round end screws (for better yaw control). While I rotated ZM5 in Yaw, Ryan S held an IR card on the periscope (SQZT7 table) and Camilla kept an eye on the beam, telling us when to stop. Once we were satisfied in both pitch/yaw on the periscope, Ryan S looked at the two iris in SQZT7, and he was happy with it as well.

I dogged down ZM5 and also re-attached the face baffle before closing the curtains on HAM7 chamber. Camilla started using sliders to fine tune the alignment.

Tomorrow morning I will take health checks on both ZM4 and ZM5 suspensions. 

<Channel name="H0:VAC-LY_Y1_PT120B_PRESS_TORR" low="1.0e-10" high="1.0e-05" description="VE gauge, PT120B CC">

TITLE: 07/16 Eve Shift: 2330-0500 UTC (1630-2200 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: Ryan C
CURRENT ENVIRONMENT:
    SEI_ENV state: MAINTENANCE
    Wind: 10mph Gusts, 5mph 3min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.10 μm/s 
QUICK SUMMARY: The LVEA is currently Laser HAZARD while alignment work is happening on IOT2L and SQZT7. Power outage recovery today is essentially finished and recovery of the IFO begins.

Shoshana, Arnaud

wp 13430

CRS laser was turned back on. HOQI signals are alive, and CRS is still ringing down at 25mHz (fig 1) 

Some convention we implementend : 

1) hoqi photodiode signals calibrated in mW with calibration gain (see below) and filter was added to FM1 of the HOQI{1,2}_{SIN,COS,MCOS} filterbanks. A minus sign was added to have positive power at the output of the hoqi filterbanks (fig 2)

[1] PD sensitivity 
[2] Transimpendance Amplfier Gain
[3] 16 bit ADC 

2) hoqi distance was calibrated as per section 2 in the assembly procedure such that a positive hoqi distance signal corresponds to the retroreflector on the CRS moving away from the sensor. For this, we had to add a -1 gain in the HOQI{1,2}_DIST filterbank (fig 3)

The next two conventions not yet implemented are to match the sign of the CRS with the CPS and get the CRS tilt signal calibrated in nrad (at the CRSINF filterbank)

TITLE: 07/16 Day Shift: 1430-2330 UTC (0730-1630 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Ryan S
SHIFT SUMMARY: Outage recovery for most of the day, commissioning work ongoing on IOT2L and HAM7 as of 23:30 UTC. 
LOG:                                                                                                                                                                                                                                                                            

• 14:30 UTC Recovered CR screens
• 15:15 UTC CDS had recovered the models and let me know I was good to work on SEI/SUS
• 15:20 UTC Start to look at SUS with Oli alog91065
• 16:00 UTC TJ to reset VFD panels (CS the Ends), this didn't first the first round and he went out to do it again (open up the VFD box and reset internally instead of the exterior red/green buttons)
• 17:00 UTC Patrick and I recovered the HEPI pressures for the Ends
• 17:40 UTC Reset CS HEPI pressure after Fil restarted the 4 VFDs (again)
• 17:41 UTC PSL recovered expect for ISS (needs to thermalize) alog91066
• 18:00 UTC While recovering the ISIs we noticed a thermal error on EY ISI coil driver, TJ went out and reset it which fixed it
  • Jim was also called and he took over finishing up the SEI recovery of the CS
  • This coil driver's thermal error returned after a bit, ST1 V1 is in thermal shutdown, Dave and I watched it flip fromV!  ST1 to ST2 on the medm. alog91071
• 18:25 UTC Jennie opened the PSL light pipe
• 19:00 UTC Dave to the ends to fix the long range dolphin
• 20:15 UTC High Voltage was turned on, then the picos and heaters were turned back on. Fast shutter was turned on and verified
• 21:00 UTC Oli verified and changed if need the optics pointing based on Top Mass osems alog91081
• 21:45 UTC Re-energize rotation stage
• 22:23 UTC small power glitch, lights flickered
• 23:25 UTC HWS recovered for now...

Alignment into JAC was not great. Since JAC wasn't thermalized yet (heater was turned on merely 30minutes or so before we started aligning) and the fringes weren't staying put relative to the PZT voltage, I injected more than 250Vpp (with an appropriate offset) into JAC PZT to make sure that more than FSR is scanned and manually aligned JM1 and PSL PZT until 10/01 mode became less than 10% of 00 mode. Didn't bother to refine further. Attached shows the JM1 and PSL PZT alignment offsets.

I zero-ed the dark offset of JAC_REFL_A_RF43.

We had to turn on FM10 ("W_in_HAM2" which is not calibrated in reality) which was disabled at some point.

JAC guardian was able to lock JAC after the above.

We are able to see flashing in MC TRANS camera now, seems like it's mainly off in yaw but we can see 00 mode once in a while. Nothing in MC REFL camera, we'll work on IOT2L next.

Power storm last night tripped all 3 turbos and a couple of aux carts. Pressure rose up to about 2.1x10^-04 Torr, noted on the attached plot.

As I was doing recovery work on the output mode cleaner tube turbo pump, I had just closed the main isolation valve and "reset" the box, I was taking a photo of the as found when we had the 6:01 am power glitch.

I returned to HAM1 SS-500 to check the system, it tripped, and I recovered pumping on the SS-500 system and HAM1 turbo.  Moved back to the OMT turbo pumps system, by now the main isolation valve was closed, restarted the different components and spun up the turbo pump, while this one reached "normal" speed I moved to the other two turbo stations, and repeated the process, soon we had all three turbos back up.

The aux carts were restarted for BSC1 AIP, GV5 AIP, and HAM3 AIP.

The Kobelco compressor made it back on its own, but the dryer tower did not, I restarted it and visually checked the dew point, it was good, reported by the dryer at -63 ^oC.

Attached is a plot of the pumpdown for HAM1 and the corner via PT180 signal from BSC8.

Also I have attached a video capture of the power outage, on the video you can hear the solenoid valves closing for OMT turbo station and other items.

The roughing scroll pumps were valved out and shut down for overnight.  Pressure in the corner was ~2 Torr at the break.