I added 150ml water to the crystal chiller. I also added about 100ml to the diode chiller. 

Note: There was no indication the diode chiller water level was low. The approximately 100ml added to the diode chiller was the remainder in the filler cup from topping off the crystal chiller. Adding the few milliliters of water left in the filler cup after filling the crystal chiller to the diode chiller has been enough to keep the water level above the low limit.         

I"ve processed JeffK's B&K measurements of the PRM, PR3, SRM and SR3 cages. I'm posting plots comparing previous measurements, generally from April 2013 or June 2014 (based on dates in headers in the original measurement files). I've put the exports I used in the folders for the appropriate folders, i.e.:

/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/PRM/BandK
/ligo/svncommon/SusSVN/sus/trunk/HSTS/H1/SRM/BandK
/ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/SR3/BandK
/ligo/svncommon/SusSVN/sus/trunk/HLTS/H1/PR3/BandK

I'm not sure where to stick the script to plot them with yet. I also need to move over the  .pls files and the full exports, but Jeff and I both have USB sticks with full back ups of all of the B&K measurements from the vent. 
 

Mid vent trends for HEPI

FAMIS7469

Laser Status:
SysStat is good
Front End Power is 35.66W (should be around 30 W)
HPO Output Power is 152.9W
Front End Watch is GREEN
HPO Watch is GREEN

PMC:
It has been locked 6 days, 3 hr 58 minutes (should be days/weeks)
Reflected power = 25.6Watts
Transmitted power = 48.03Watts
PowerSum = 73.64Watts.

FSS:
It has been locked for 5 days 0 hr and 29 min (should be days/weeks)
TPD[V] = 2.725V (min 0.9V)

ISS:
The diffracted power is around 1.8% (should be 3-5%)
Last saturation event was 6 days 2 hours and 14 minutes ago (should be days/weeks)

Possible Issues:
PMC reflected power is high
ISS diffracted power is Low

The upper E18 in the MSR (h1fw0's raid) was sounding an audible alarm this morning. The management web interface is showing that controller0 on this unit has/had an over-temp event, though its current temp of 45C is the same as h1fw1's raid which is not in alarm.

Trending the MSR MAX temp over three days does not show much variation. RACK1 temp shows a slightly elevated temp of 25C (75F) at 8am PST this morning.

I've silenced the audible alarm and I am working on resetting the latched alarm.

AT 18:19 UTC (10:19 PST) Peter transitioned the LVEA to laser HAZARD

The LVEA has transitioned to LASER HAZARD.

Closing out the CS chambers this week.

Modified IO team will work out the bypass and a stable beam for the ISS alignment.

VP emulator will be installed on HAM2.

Transfer functions will be running over night.

Vacuum team ready to pump down end of this week or next week.

Apollo crew will be here next week.

Be cautious of unlocked HEPIs.

Prep for end station work is beginning. Clean rooms are not on yet. EY is first on schedule.

TMDS equipment will be brought back to CS.

PSL will go off at the end of the day Thursday and remain off for the duration of the holiday break.

See whiteboard for entire plan and WORK SAFELY

All plots look normal

TITLE: 12/18 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: 20mph Gusts, 11mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.30 μm/s
QUICK SUMMARY: There is some alarm in the MSR, Richard investigated and it seems to be the tape drive not initializing. We will inform CDS when they arrive. Other than that cleaning crew is making their rounds.

The LVEA has transitioned to LASER SAFE

Both Chandra R. and myself had independently observed that the %open value for CP7's LLCV seemed unusually low.  After reviewing the recent values/history, the only thing that is unusual is that the storage tank (dewar) is abnormally full-having received a delivery recently.  

No worries.  

Kyle R., Rakesh K. 

Last week Rakesh K. and I bolted together the NEG pump assemblies that get mounted atop the OMC tube prior to pumping down the Verex+YBM+XBM.  "Others" have shown (confidential study) that these NEG pumps can be a significant source of particulates in the size range that is of concern us if not first subjected to a few cycles of 1) heat soak at 250C (condition step), 2) heat soak at 550C (activation step), 3)cool down, 4) vent using UHP N2 followed by 5) a sustained viscous cross-flow of UHP N2 (60 psi source).  After a few of these cycles, the measured particulate falls off to acceptable levels (near zero counts per cf).  

We were able to complete the assembly of (3) ea. of these pump assemblies.  I had hoped to complete (3) of these conditioning cycles in the lab for each pump assembly prior to installation but have had to succumb to the schedule.  As such, each NEG pump will need to complete the remaining cycle(s) after installation on to the OMC tube.  This will be done before exposing the Vertex vacuum to these pumps.  Note that the blank flange, opposite that used to introduce the viscous UHP N2 flow, gets removed for this process so as to allow liberated particulate to exhaust from the pump housing.  

Misc. checks and some NEG pump prep. work in Room 169 for tomorrow.  

HAM2-3 work today (Cheryl, Ed, Sheila, Betsy)

Since Sheila and I finished after the rest of the crew I'll post this log, but hope that Cheryl (or other 2) feel free to add. 

After some whiteboard work this morning to interpret the misalignments that Cheryl reported at IM1 yesterday, we proceeded with walking the beam through the IMs, adjusting mechanical yaw and pitch along the way.  Although only mostly sure, we think the misalignment of IMs reported yesterday were due to the gamut of mechanical adjustments made to them over the last few weeks (a few bolt tightening exercises, B&K knocking, realignments within the cage, slight misalignments left over from previous alignments, you name it...).  So we decided that it was not crazy to think that twisting the tower to correct such things in order to buy back maxed AOSEM ranges was prudent.  In the end, the twist of IM1 to IM2 was achieved by loosening dog clamps and barely applying some finger pressure to the tower to 'feel' a sub-millimeter slide on the table".  We needed even less at IM3 and IM4 in yaw, and nothing at IM2.  Only IM4 needed additional Pitch mechanical bias relief, for this Cheryl needed to remove the structure baffle and switch the pitch adjusting locking collar to the back side for ease of use.  At COB just now, we have reasonable bias on all IMs (~50% DAC range used here and there), and the beam well centered on all, plus the input of the FI, the output of the FI, the PRM iris, the PR2 iris, and the PRM refl beam going back to HAM1 (with exisiting bias from previous alignment).

For the record, to do this we:

Translated IM1 to center beam on closes wave plate and baffle,

Yaw/Pitch IM1 to center beam on IM2 and fine align to FI input,

Yaw/Pitch IM2 to center output of FI and check alignment ot IM3 is also good,

Yaw/Pitch IM3 to PRM iris,

Yaw/Pitch IM4 to PR2 iris,

Bias relief mechanically as needed,

Took quick TFs along the way to make sure IMs were healthy as we went since we were adjusting things on them,

Centered IM3 LR and UR AOSEMs since 1 had become near 0 and the other was also slightly out and was super easy to fix.

I also fixed that PRM front dummy flag that Cheryl reported as getting knocked during cleaning the other day.  All AOSEM signals look good on that guy.

MONDAY - Install bypass mirror and align ISS.

TITLE: 12/16 Day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
LOG:

15:20 UTC Mark and Tyler to LVEA to install NEG pump on output tube
15:32 UTC Bubba to LVEA to join Mark and Tyler
16:16 UTC Chris to LVEA to talk to Bubba
16:31 UTC Bubba back
16:36 UTC Chris back, will open LVEA high bay outer rollup door
16:36 UTC Richard out of LVEA
17:01 UTC Mark and Tyler back
17:26 UTC Richard to LVEA to retrieve tools from bier garten
17:34 UTC Richard back
17:51 UTC Richard and Filiberto to LVEA to test ESTOPs
17:55 UTC Peter transitioning LVEA to laser hazard
17:58 UTC Tractor delivery through gate for Bubba
Richard back
18:31 UTC Travis to bier garten to pack up equipment
18:38 UTC Filiberto back from LVEA, going to end Y to jumper EtherCAT safety block
18:46 UTC Terry to squeezer bay, squeezer bay to laser hazard
18:48 UTC Travis done
18:57 UTC Nutsinee to squeezer bay
19:06 UTC Filiberto going to end X to jumper EtherCAT safety block
20:43 - 20:50 UTC Elizabeth dropping off cables in CER
21:01 UTC Nutsinee back
21:11 UTC Ed and Yannick to HAM2 area to garb
21:14 UTC Travis, Mark and Tyler to LVEA to prep for moving equipment to end stations
21:23 UTC Bubba to end Y
21:23 UTC Betsy to HAM2
21:23 UTC Richard to LVEA to test Beckhoff laser safety interlock
21:32 UTC Travis, Mark and Tyler back
21:36 UTC Sheila, Betsy, Cheryl, Ed and Yannick in HAM2
21:56 UTC Bubba back
22:27 UTC Richard and Filiberto to LVEA
Richard back
23:01 UTC Filiberto back
23:09 UTC dust alarm in vacuum prep lab
23:25 UTC Travis to LVEA to take torque wrench to HAM2
23:36 UTC Travis back
23:36 UTC Terry to squeezer bay
23:47 UTC Nutsinee to squeezer bay
00:03 UTC Yannick back

Please be mindful of the signs and the floating blue parts.  The pump station is not running so the HEPI can not be isolated.  So, the platform can not be tripped but it can be moved, so again, mind the signs and avoid the blue hardware.  The ability to isolate and so be tripped will not be until all the 4-way valves are changed to the run position and fluid is lowing through the actuators.  I don't want to re-pressurize the flex lines near the open chambers so waiting on doors.

When the HEPIs were locked way back mid September, it was done so with them isolated and it was attempted to lock them in the isolated position.  WHAM4 was locked pretty close, see aLog 38654 for the numbers.  However, since all the alignments and work was down in the locked position, the CART_BIAS SETPOINT which is the servo'd to position, was reset to the locked position.  After unlocking, the large HEPI payload springs were adjusted to reduce the residual=free hang position less the setpoint, as much as possible.  Did manage to get under 3um or urads.  The final adjustments were single springs turned ~1/24th turn.  After isolating or running TFs or ROM tests, this free hanging position will likely change, but, it is a start.  At least the first time it should have no problem isolating and serving to the TARGET locations.  SDF files have been updated but not committed (issues with svn I understand?)