ITMx:

The first half of the day was spent packing up welding and IAS equipment and converting the space from a laser enclosure welding area to a install/assembly area.  I then replaced the middle wire segment (from top mass to UIM) that was broken during the extraction of the lower structure.  I also added the UIM non-magnetic blade dampers (NMBDs) to the blades of the main chain and removed the unused copper ECD blocks as per E1600011.  We then called Fil in to start looking into an FRS 4509 (ringheater RTD sensor non-functional).  Fil will continue this work tomorrow.

ITMy:

With Fil working on RH issues on ITMx and Garilynn visiting this week to commission the new baffle alignment equipment, we redirected our effort to ITMy.  We got as far as swinging back the ACB (Note: we had to un-swing-away the ITMx ACB since we only have one wedge, but will hopefully have another arrive in the mail from LLO shortly) and putting on optic face shields.  It is NOT locked yet. 

Pumping on shroud prototype in mech. shop - leaving scroll pump run overnight. Pump is relatively quiet.

I'm covering for Cheryl.  Ed covered for me from 8:50 - 10:50.  Cheryl covered 12:30- ?.  Patrick covered from ?-2:30.  And now I'm back to cover while Cheryl heads out to HAM2.

Had "Noise Eater out of range" verbal alarm this morning.  Ed mentioned filing an FRS for this on behalf of Jason.

Day's Log Of Activities

• 15:45 CER Work (Richard, Ryan)
• 15:47 Christina out to EX
• 16:01 Travis out to biergarten
• 16:03, 18:13 Betsy heading out to biergarten a few times.
• 16:15 Cintas on site
• 16:27 Jason out to reset Noise Eater
• 16:28 Elizabeth out to HAM6 area to retrieve equipment (non-specific)
• 16:52 Elizabeth is back
• 17:06 LN2 delivery for CS-X
• 17:57 IAS equipment removal from beer garden; will likely go into afternoon (Jason)
• 18:02 Paradise water 
• 18:04 - 18:28 UofWash Tour (Richard)
• 18:53:26  Jason - GV7 is hissing
• 18:53:37  Travis is out for lunch
• 19:28:02  Jason out of LVEA
• 19:28:31  Richard to CER to test a phone
• 19:34:13  Keita, Ed, Corey, to HAM2 to swap optics
• 19:34:52  Richard to LVEA to deploy phones
• 19:35:10  JeffB out of optics lab
• 20:12:15  Richard is out of the LVEA
• 20:15:11  Travis to ITMX
• 20:37:04  Patrick rebooting ISC at EX
• 21:08:36  Hugh to HAM6
• 21:30 Cheryl out to HAM2

As of 23:12UTC: (completed by Cheryl)

• Jason, Betsy, Travis - at ITMX, not in chamber, in the cleanroom
• Keita, Ed, Corey - out of the LVEA from HAM2
• Gerardo - out of the LVEA

(Cheryl, Corey, Ed, Keita)

Items Removed 

The following assemblies/items were removed today & bagged/tagged:

ROM RH4:  

• 2" BS (90/10) only

ROM RH5:

• Siskiyou Mirror Mount
• Post

NOTE:  The 2" HR ("M-38-UNP-53") & Black Glass dump for this one was installed on ROM RH4

ROM RH6:

• 2" HR Mirror ("ATF PL M-17-P")
• Siskiyou Mirror Mount
• Black Glass Beam Dump assembly for mirror mount
• Post

ROM LH2:

• 2" HR Mirror
• Siskiyou Mirror Mount
• Black Glass Beam Dump assembly for mirror mount

NOTE:  A V-Black Glass Dump was installed on the post for LH2.

Misc:

• (2) Fork Clamps Removed

Tightening IM3 Assembly Screws

Here is a note Ed wanted me to take while Keita tightens:

1)  Tightened screws on top of IM3, and had this:

• Pit:  No Change
• Yaw +10 uradians

2) Tightened 1/4-20 bolts (on sides, OSEM plates, etc.), and had this:

• Pit:  No Change
• Yaw +70 uradians

Don't be alarmed when you hear a flow of air near GV7. Its compressed air solenoid valve is leaking. Replacement is on order.

   Betsy, Jeff B.,

   This afternoon we made a first pass at adjusting the M2 and M3 OSEMs to their mid-light positions. The adjustment went well. They are all within 200 counts of zero. A minor tweak was made to the T3 top OSEM. All these OSEMs will need final adjustments when the beam alignment is made.  

   Betsy tightened the flat head screws on the 25 pin connectors. The loose one may be the source of grounds.  

FRS ticket already exists as 5270.
Restarted.

Travis, Jason & Angus.	Oct 5th, 6th & 9th

The new ITMx has been welded and the violin modes of the fibres measured in air with the PUM clamped. The welding went quite smoothly apart from a couple of points. 
1)	The epoxy around the sapphire prism on one side of the PUM (+Y side) has charred due to heat from the welding of that fibre.
2)	The lengths of the horns on the PUM after fibre removal were not all exactly 6.0 mm above the ear, and this was not compensated for exactly with each fibre. The consequence is that the break-off values for one of the fibres (+X-Y) will be higher at the PUM and a bit lower at the ITM
The following fibres were used and the violin harmonics recorded

Posn	S/N		fund	2nd	3rd	4th	5th	(predicted in-vac)
+X+Y	S1400158 	502.45	994.8	1463.8	(1930)	[2390]	503.0
-X+Y	S1400137	503.96	997.85	1468.3	1931.6	(2391)	504.0
-X-Y    S1400164	504.71	1001.6	1472.4	1940.3	2408.3	504.6
+X-Y	S1400154	504.45	1002.6	1466.6	1936.4	2390.0	505.4

Accuracy is about +/- 0.05 for the fundamental, +/- 0.2 for the 2nd harmonic and the higher harmonics are generally +/- 0.5 or better, except for the ones in brackets which are worse. The round brackets are +/-1 and the square is +/-10 Hz (yes ten!).
It can be seen that the harmonics “cross” and that without this measurement it would be harder to determine which harmonic belongs to which fibre.
The pitch prediction from the fibre profiles was 0.1 mrad up (wrt PUM), the actual pitch is 0.3 mrad up. The roll and separation are as good as, or better than, the previous ITMx assembly. The yaw and pendulum frequencies were measured with +/- 0.005 Hz accuracy to 0.650 and 1.095 Hz respectively.
Attached are typical (linear) plots of the modes and a zip file of the original data files and excel files. Plus pics of the welds.
Fibre guards are on.

In anticipation of attaching AOSEMs to the OFI for HAM5, I laid out a string of the appropriate cables and AOSEMs next to the chamber on a staging table.  I've fastened to the table the clean-to-dirty ribbon-feedthru-simulator-cable to the table and Fil has run a grey temp out of vac cable from it to the sat amp located on the other side of the chamber.  So, the OFI guys can test fit and test the new AOSEMs and their brackets when ever they are ready.

The cables and AOSEMs are:

D1000234-88"  S/N 932

D1000225-230"  S/N S1104240

D0901065  S/N  525, 559, 511

The Noise eater has tripped and is currently NOT resettable. Jason and Peter are aware of this and are investigating it. An FRS ticket has been filed.

This morning I completed the weekly PSL FAMIS tasks.

HPO Pump Diode Current Adjust (FAMIS 8443)

With the ISS OFF, I adjusted the operating currents of the HPO DBs, changes summarized in the below table.  A screenshot of the PSL Beckhoff main screen is attached for future reference.

I did not adjust the DB operating temperatures.  The HPO is now outputting 154.4 W and the ISS is back ON.  This completes FAMIS 8443.

PSL Power Watchdog Reset (FAMIS 3671)

I reset both PSL power watchdogs at 16:19 UTC (9:19 PDT).  This completes FAMIS 3671.

Yesterday we tied in ±18V to SUS-R3 and SUS-R4. We now have our standard 8 awg shielded cable running from the CER mezzanine down to the LVEA racks. The following electronics were moved to the new ±18V line: Op Lever whitening chassis, CPS Timing Fanout, and the SAT Amp units. Some of the "temporary" cabling used to previously power these electronics will be removed.

Both TCS LVEA racks are sharing their own dedicated power supplies for ±18V and ±24V. One thing to note is that the CPS Timing Fanout in TCS-R2 (next to BSC1) is being powered by TCS rack power.

The new SQZ-R1 rack is now powered by its own dedicated ±18V power supplies. We used the the existing ±24V from ISC-R3/R5 since the current draw is minimal.

Betsy, Hugh, TJ

Last week Betsy put the heater on the table and today Hugh checked it's vertical center with an auto-level. Some washers were added to get it as close to center as possible, which ended up around 0.4mm high. Betsy and I then had to wiggle the assembly into place, and rotate the entire gold ceramic holder to allow the screws on the outside to clear the OSEM brackets. The heater is currently sitting ~6mm away from the back of the SR3 optic and it is plugged into the feed through.

Picture attached.

With GregG in chamber and JimW helping outside, the installation of the ViewPort onto the -X most Septum Window was pretty straight forward.  A new o-ring was used and the window/flange clocking mark was put at 9o'clock (-X) and was torqued in three steps to 16 ft-lbs.  Attached photo shows these men in action.

The image attached shows the 5 way cross installed.  The Fiber feedthru (currently blanks) are visible below the cross.  The five ISI cables are rerouted to FTs on the cross but the in-air cables have not been reconnected.  I'll do that after Kyle gives it all a look and touch; fingers cross for leak checks down the road.  The facing 25p has no cables but it was readily available, that is why it isn't a blank.

I've added a button the ISI_CONFIG screen that transitions the seismic systems to a robust state to protect the suspensions during a verly large earhquake, like the infamous Montana earthquake or the recent Mexican earthquakes. It's the red button that says Very Large Earthquakes. This script requests the DAMPED state for all of the chambers with ISIs and switches the gains of the all the L4Cs and GS13s. This button is likely temporary, but is probably the state we want to leave the seismic systems in when no-one is on site in the future. The script lives at /opt/rtcds/userapps/release/isi/common/scripts, and is called SET_EQ.py .