Scott Ed Zack & Slim

A little rusty, it has only been 14 years since we did this last but we got the South Tube into HAM6.  We did do the hard one first though, the North Tube should go much easier tomorrow.  Follow that with the Support Table, position work, and Bellows install.
A few photos for the archives.

•	0845 Hanford Fire onsite all day doing maintenance and testing of outbuilding fire alarms with Rodney.
•	0900-1300 Terry, Christina, Chris and Karen cleaning various areas in LVEA---BSC1, BSC2, test stands. Corresponding dust alarms periodically.
•	0930 Corey installing LED lamps on LVEA ISC table.
•	1000 Rental tractor delivered to Mid-Y for tumbleweed crew (Valley Tractor).
•	1045 Jim B examining test stands in LVEA.
•	1119 Dave B restarting H1SUSIM.
•	1445 HFD work complete.
•	1530 Apollo breaking bolts on BSC1 in anticipation of removing south door tomorrow.

Mark B.

I checked out the basic functionality of MC1 and MC3 and they seem fine after the rerouting of their cables. Matlab TFs will start shortly. The corresponding MEASUREMENT STATUS indicator will flash when a TF is underway on a particular suspension. The damped TFs will be done first in case in case the whole run is not done by the time of the RTCDS v2.6 installation tomorrow and needs to be interrupted.

The tumbleweed situation on X Arm remains dicey. One lane was cleared from the corner to the end however there has been some encroachment due to subsequent weather. The road section from the corner to the mid is a little intimidating because of the height of the tumbleweed piles but is passable as long as you don't hurry too fast. The road section from the mid to the end is somewhat more open. 

ICC is complete, the new spool pieces are installed and married up and all doors are returned to the chamber.

The tumble weed situation down Y arm has not changed since last week: wide open from corner to mid, one lane open from mid to end. Please be careful of machinery by second beam tube enclosure door from mid.

The vinyl flooring by the front of BSC10 and under the test stand location is completely installed. The leg of the E-module is sitting back down on the floor so the crane is available for use.

0900 hrs. local 

1.7 x 10-6 torr @ turbo inlet 

BSC 3 now has its HEPI housing installed and locked in place. The blue-iron brackets are still in place for now but will be moved to BSC 8 for swapping back in the iLIGO stacks.

The hydraulic actuators on BSC 8 will also be moved over to BSC 3. One bolt had galled on BSC 8 horizontal actuator but was cut out. After removal the HEPI foot will need to be fixed.

This morning I relocked the HEPI elements after yesterday's L4-C replacement.

As I said yesterday, there was motion when I unlocked but after putting the motion into Global Coordinates, the motion suggest these were just strains put into the system when it was locked.  There has been a lot of activity at the HAMs between Dial Indicator removal and IPS coming on line.  So, I look forward to hearing from IO that the Mode Cleaner is still flashing.
The Global Coordinate shift is 15urad and the average translations are less than 0.1mm after everything is replaced and relocked.  The shift from floating to locked is much less than these numbers.
I did not zero out these readings as I did on HAM2 alog5018.  The Pier3 Horizontal Actuator may need adjustment; I'll wait to zero HAM3 until that is complete.

Mark B.

Preparing for undamped and damped Matlab TFs on the BS. "Measurement Status" indicator on the MEDM screen should go on automatically when underway and off when done.

Restarted the daqd process on h1broadcast0.  Prior to doing this, David Barker revised it's broadcaster.ini file to specify the list of channels requested by John Zweizig, and modified the daqdrc file to cause the daqd process to read the broadcaster.ini file.

The date on the h1broadcast0 machine is Jan. 1, although the time of day is correct.  This will be corrected.

Yesterday, the two remaining spool pieces were moved into the cleanroom. One spool was attached to BSC9 and a second spool added to fill in the gap between BSC9 and BSC5. Since BSC5 already had a spool piece attached, it was possible to marry the three spool pieces and complete the beam tube between the chambers.

Yesterday, the C-3 soft roof was pulled from HAM3 and installed on the cleanroom over HAM6. 

Sloooowww vent is done -> As such, I connected the HAM6 vent/purge connection and cracked it open -> Now the YBM vent/purge is connected with its valve partially open and the HAM6 vent/purge is connected with its valve partially open -> Purge-air air currents across the ITM (real or imagined) can thus be manipulated to compensate for the 1st component to be removed (YBM spool, or HAM6 door) 

1730 hrs. local 

1.9 x 10-6 torr @ turbo inlet -> Foreline @ 3.7 x 10-3 torr

The non-functioning Horizontal L4-C L41659 on Pier2(SW) was replaced with L41366.  While at it I 'leveled' the L4-C based on its clamping bracket D030586 but other data suggest that may only possibly help.  This required about 0.09" of shim although this isn't the amount of out-of-level due to geometry.
I've left the HEPI system on WHAM3 unlocked; I want to see if there is any slow creep of the system while free.  I'll lock it up in the morning and then summarize the numbers--yes there were some shifts from locked HEPI to unlocked position.

As of 4:00 PM local today, the vacuum level at BSC 8 = 720 torr and at BSC 2 = 660 torr.  Richard replaced the power supply for the LVEA test stand sus IO chassis and Jim did some reboots to restore the system, which appears to be running satisfactorily.  Flooring installation is underway at EY.  Seismic's replacement of the HAM3 HEPI L4C appears to have worked.  Michael R and Kiwamu worked on PSL RF during the day.  Apparently tumbleweed baling has continued throughout the day.  Work permits signed by ops today:  3625 (Hugh, HEPI L4C), 3626 (Thomas Vo, oplev removal), 3627 (Filiberto, HAM1/HAM2 cable re-routing), 3628 (Apollo, EY crane support of clean room during flooring installation).

Mark B.

Taking TFs on MC2 from 12:45 pm.

I let Michael R know that the NPRO is off.  H1:PSL_AMP_ENABLEPWRDOG was alarming this morning.

I ran a quick test today on IM3, which now has the largest offsets of the 4 HAM AUXs.  In the attached plot, red shows the pitch offset, black the yaw offset - blue shows very different behavior when each offset it removed - the damping of the oscillation when the pitch offset is removed shows the optic is touching an EQ stop.

I left all HAM AUXs, IM1, IM2, IM3, and IM4, undamped overnight.