DAY Operator Summary

TITLE: 02/26 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:

Cheryl out sick, so her shift is being covered by multiple people (I covered morning & Patrick/Jeff will also help with coverage).

LOG:

•  15:51-15:59 Mark D at EY. --DONE
• 15:47 Reset Dust  #10 in LVEA (Jeff) --DONE
• 16:10 Ken to EX for Access System work, may cause access system alarms
• 16:25 Getting tools from H2 PSL room (Rick) --DONE
• 16:38 Looking for parts in LVEA (TJ) --DONE
• 17:35 EY stuff to EX all day (both Marks)
• 17:45 Transitioning LVEA to Laser SAFE (Bartlett)
• 18:06 CP4 work (Chandra)
• 18:06 Connecting HAM6 VOPO In-air cables to the roof flange (Hugh)
• 18:10 VOPO prep in Optics Lab (TJ, Alvaro)

18:13 UTC Jason to PSL enclosure
18:19 UTC Travis and Betsy helping Apollo crew move equipment from end Y to end X

18:38 UTC Corey to optics lab for VOPO.

19:05 UTC Gerardo and Filiberto to mid Y

19:11 UTC Ready to move VOPO. Jeff K. taking pictures, informing Bubba.
19:11 UTC Pepsi Cola through gate.

ETMx OpLev drift during vent

Checking the ETMx OpLev in preparation for in-chamber activities starting soon, I noted that the OpLev that was re-centered on Feb. 15 (40559) is no longer centered on the QPD.  We will probably want to re-center the OpLev again before removing the Quad so that we have an in-air reference to align back to.  See attached trend.  It appears that the OpLev Pit and Yaw are continuing to trend upwards even after the vent has completed.  This is possibly due to temperature, but this gives us some (small magnitude) doubt to the reliability of using the OpLev for Quad alignment.  Luckily, we also have ALS and PCal to use to verify our pointing.

Monday 9:00am Vent Meeting Notes

Status

• Corner Vent pressure good--HAM6 VOPO work should be good to go.
• Can transition to Laser SAFE (Bartlett)
• Discussing HAM6 fiber feedthru flange (Gerardo needs to receive paperwork)
• PSL work continues

LVEA:  VOPO Install (Corey, TJ, Alvaro with Bubba observing).  And then fine tuning rest of the week.  Might need beam/laser HAZARD Wed. 

EX:  Vented, IP12 removal (Tues), door off (wed/later?), Arm install (later in week)

EY:  PCal work beginning of the week, ground loop checks, elec field measurements later in week, Vacuum install tasks next week

MY:  CP4 Bakeout start this week sometime

Tues Maint: 

• ISI model boots,
• framewriter work,
  SQZ model update,
• DAQ boot,
• Beckhoff SDF (hanks),
• Redundant trend writers (hanks),
• Tues Operator be on look out for any issues which could affect alignment from these bootfests...want to be ready for HAM6 alignment later this week. 
• Corner station HEPI maintenance, 

Safety: 

• IR only glasses use at EY for PCal.  This is a waived and rare occasion.  Rick & Peter talked about it. (Mike L)
• Want to be good with housekeeping! (Bubb)
• Do not leave in-air optical table doors open if you are leaving table unattended--even if we are Laser HAZARD. (Peter)

EY & EX Temperatures

Having some EY Verbal Temperature Alarms. Bubba notified and we are within the range he wants there. He mentioned EX may begin to have wide temperature variations soon as well. This is all known & corresponds with chamber work at the end stations. Perhaps we can open up the temperature alarm settings on Verbal Alarms for the end stations.

PSL Weekly Report - 10 Day Trends FAMIS #6189

Trends are in a state of flux as the 70W work continues.

Monday Morning Status

TITLE: 02/26 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind: 12mph Gusts, 8mph 5min avg
    Primary useism: 0.25 μm/s
    Secondary useism: 0.51 μm/s
QUICK SUMMARY:

LVEA continues to be Laser HAZARD.

VOPO install at HAM6 is on the docket for today.

• Receiving EY Low Temps on Verbal (Notified Bubba, we are still within his range he likes.  Perhaps Verbal Alarm levels should be opened up a bit.)
• Seismic FOMs are up and current on nuc5!
• Hardware Watchdog is RED at EY due to ISI trip (chassis will need to be reset after ISI is able to be un-tripped.  This known status alogged last week.)

In-chamber work in HAM6 OK now abiding by normal protocol

Significant pressure transition across septum viewport complete

TCS CO2 Lasers On

Sheila D. Greg G.

Remotely enabled the CO₂ lasers from the control room, CO₂Y is in the Guardian lock laser state, while X is merely on. The integrators in the chiller control loops have been turned off, and a new chiller limit value was set to try and keep the control loop from giving the chillers a value that causes them to trip.

Pressure not decreasing in XBM

As seen in the attached pressure graph, the XBM pressure isn't following the expected pump down curve.  Since GV2 was closed, thus isolating the XBM from the adjacent volumes, the pressure has been rising, flat or not decreasing etc.. In this configuration, IP6 and the XBM MTP are the only pumps pumping.  Chandra R. had suspected previously that IP6 may be dying.  Even so, I would expect that the symptom would be a loss of net pump speed. With the LVEA temperature constant, I'm wondering if this apparent increase is something else, like.....? 

I confirmed that the MTP and IP6 are valved in.  4.9 x 10-9 Torr indicated at Turbo inlet -> PT170 gauge has been questioned in the past and is suspect 

Papua New Guinea EQ

The good news is that it looks like someone must have set our seismic system to the Large EQ mode before this morning's EQ hit, and none of the seismic systems are tripped now, the ISIs are set to damped with feedforward off and sensor correction seems to be off.  

ITMY suspension was unfortunately set to safe, I assume this is left over from the fix earlier in the week.  The attachment shows a comparison of ITMX and ITMY top mass osems (ITMY oplev beam is not on the QPD in safe mode) during the EQ, ITMY was swinging by more than 60 urad peak to peak while ITMX which had suspension damping loops engaged was swinging by about 20 urad at most. 

I've turned on the damping on ITMY now.  I also hit the button RECOVER EQ on the ISI_CONFIG screen, I got some errors from the script but it did take the ISIs to the windy state (screenshot attached).

 It might be good to add to the operator tasks a check that suspensions and ISIs are in a good state before leaving for the night or weekend.  (ie, if suspensions are not damped, operators could make sure they know that it is intentional and there is a good reason for it).  Leaving our suspensions damped as much as possible will help us avoid some problems similar to what we had after the Montana EQ last summer.  (For reference, while the suspensions were undamped during that EQ they were moving by 10,000 urad peak to peak, so this EQ is not really comparable.)

This is probably my fault. I set ITMY SUS to safe on Feb. 21 before Filiberto started disconnecting cables and didn't think to set it back.

On site checking running equipment

I texted Gerardo and Chandra when arriving and will when leaving or 6pm, whichever occurs first. 

Will also finish rough pumping the Vertex.  I expect to be here until around 6pm and will make a comment to this entry when leaving.  I can be found in the LVEA, Mechanical Room (Kobelco area), VPW, Y-mid VEA or my office.  I won't be craning, on ladders or using power equipment.

Need until 7pm

Leaving site now.