JimW GregG Hugh

All the Actuators are reconnected.  All the IPSs are ~zero'd.  The loop targets have been reset to the ~zero position and the lvl1 isolation loop has been closed.

Based on the dial indicators, we should still be very close or even closer to alignment objective--waiting on safe conditions for Jason to confirm.  We (SEI) need to shoot the level of the Optical Table but again, based on DIs, I think we are fine.  A slight tweak with the DSCW springs is still doable.

I haven't retailored the loops but the L4Cs on the HEPI and the IPS themselves shows a noisier state when the position loops are closed.  We may neeed to remeasure the plant TFs.  I just did a dof by dof look and it looks like the Y is the main problem.

I've started a Linearity Test on opsws3--Please let it go.

New Targets for position are -1200 1700 1000 -400 -400 300 -300 -200 for X Y Z RX RY RZ HP VP

Arnaud, Rolf, Jim, Dave

At 15:10PDT we ran a 1Hz Sine excitation of ETMY to test the HWWD. Prior to the test we reduced the trip level on the HWWD to its minimum value of 60mV. Arnaud brought the excitation amplitude up slowly until the PD error condition was triggered on the HWWD. At that point the RMS read back from the HWWD was about 600 counts (on a PEM ADC channel with the 10xgain AA) and the SWWD was recording about 88mV. Arnaud was happy leaving the ETMY in this state for several minutes, so we let the HWWD run through its two 2 minute count downs. All worked correctly.

The next test is to excite ETMY using the ISI system on BSC10.

Today, Travis, Robert and I installed the temp dams in the tub sections between BSC3 and 2 and between BSC1 and 2.  This will provide laser safety for IAS at the X-spool while there is laser work taking place in HAM2/3.

similarly as for TMSx few weeks ago, some of SRM and SR3 osem signals were suspiciously noisy (have been for few days), and were showing ~1700Hz oscillations. As Richard suspected, power recycling the AA chassis of those osems fixed the pb. attached is a spectra of one of the osem for SR3 and SRM before (blue/red) and after (brown/green) rebooting the chassis.

Morning's Activities  (covering Justin's Morning 8:30am - 12:45pm)

Today's Maintenance Day, but some CDS maintenance work will be postponed to Thurs due to NSF Meeting.

• 8:45:  LVEA Transitioning to Laser HAZARD (justin)
• 8:50:  BSC3 HEPI work (Hugh)
• 8:55-9:44:  Dust Mon#2 at HAM2 is back online (battery change) [Jeff B]
• 9:09-10:30:  EX & EY Pulling Cables (Aaron & interns)
• 9:20:  IMC bypass work begins (Keita, Kiwamu, and others)
• 9:30:  ex, ey terminate ethernet cables (cyrus)
• 9:30:  IO Water turned ON
• 9:40:  BSC2/HAM3 Laser Barrier installation (Betsy, Travis, Robert)
• Praxair delivery at EY ~10:45
• (after lunch) Toggling Power for SUS Electronics at HAM5's SRM & SR3 for noise investigations (Arnaud)

The ISIs ODC bits were reporting ST1/ST2 isolation to be off for ETMX/ETMY whereas the isolation was on. This was due to the "Correct Gain" setting to be wrong for all DOFs in the ISO filter bank. They were corrected for ETMy and ETMx. At the same time ETMX and ETMY suspensions M0 and R0 ODC damp state were also updated.

A safe.snap should be done on ETMx/ETMy ISI/SUS before next model restart.

model restarts logged for Mon 23/Jun/2014
2014_06_23 11:15 h1susetmy
2014_06_23 11:16 h1susetmy
2014_06_23 12:11 h1susetmy
2014_06_23 12:30 h1susetmy
2014_06_23 12:58 h1susetmy
2014_06_23 13:12 h1susetmy
2014_06_23 13:16 h1susetmy
2014_06_23 15:05 h1sustmsy
2014_06_23 15:11 h1broadcast0
2014_06_23 15:11 h1dc0
2014_06_23 15:11 h1fw0
2014_06_23 15:11 h1fw1
2014_06_23 15:11 h1nds0
2014_06_23 15:11 h1nds1

no unexpected restarts. HWWD work at ETMY followed by supporting DAQ restart.

• BSC3:  25% of Actuators installed.  Will use all of today to continue Actuator Work (Hugh & Greg)
• HAM2:  Need Hazard ASAP to continue work (which will take most of the day).  Will run in pseudo Laser Hazard in that barriers will be set up in LVEA to allow Laser Safe in areas away from Laser Hazard work at HAM2.  Witness plates removed from HAM2/3. 
• HAM6:  Needs cabling attention (when we go back in-chamber).  Doors will be tacked on.
• Beer Garden:  Bubba/Apollo working on cleanroom
• NSF Tour 2-3:15

model restarts logged for Fri 20/Jun/2014
2014_06_20 13:18 h1broadcast0
2014_06_20 13:18 h1dc0
2014_06_20 13:18 h1fw0
2014_06_20 13:18 h1fw1
2014_06_20 13:18 h1nds0
2014_06_20 13:18 h1nds1

Saturday and Sunday, no restarts reported. No unexpected restarts.

Nowhere near bypassing yet.

PSL power was set to 200mW, and the polarization was set to low finess.

Position of the PSL beam reflected off of the HAM1 PSL input viewport was marked on the wall of the PSL enclosure. It was off by about 2mm to the right. The beam motion is smaller than previous vent.

Good MC mirror biases were put back.

MC didn't flash though there were already multiple bounces.

Installed irises for MC1, MC2 and MC3. There are dog clamps on the ISI as a part of permanent installation that are meant to work as stops for the base of these irises. We just picked the irises with right height, pressed them against the fixed dogs, and fixed them down using temporary dogs.

On MC2 the beam is somewhat too high and maybe about 3 or 4mm to the east. We will fix this by touching PSL.

Om MC3, it seems like the iris position is wrong for whatever reason. Maybe this is intentional, but as is, the iris should move about half inches to the west. In the attached picture, MC3 and the baffle are positioned correctly, but the iris has a big offset from the center line of the baffle. See also T1300327-V2, Figure 1.

I'd like to move the MC3 iris to where it's supposed to be and realign MC tomorrow. I will not proceed without IO's consent.

Sloppy lock just for the Septum pull.  That is, not at alignment at the moment.  As soon as Septum work is done we'll unlock again.

Made the moves per IAS/Jason, reattaching Actuators now using DIs for position monitoring.  The two West side Verticals are complete; will continue Tuesday.

JimW GregG Hugh

Day Shift Summary
LVEA Laser Safe 

09:00 Gerardo & Joe – Inspect viewports at HAM2 and HAM3
09:00 Hugh – Disconnect BSC3 HEPI 
09:20 Mike L – SURF tour through LVEA
09:30 Jason – Alignment work at ITMX
09:35 Jeff – Adding dust monitors at HAM2 and HAM3
09:45 Apollo & Jeff – Removing doors on HAM2 and HAM3
13:10 Hugh – Working on ITMX move
13:15 Jeff – Remove witness optics & 4” wafer from HAM2
13:45 Calum & Kate - Remove witness optic and 4" wafre from HAM3
13:52 KingSoft on site working on RO filter 
15:00 Travis – General SUS cleanup in the LVEA
15:05 Dave – Reboot SUS-TMSY for hardware watch dogs
15:00 Dave – Restart the DAC

Installed new dust monitors in HAM2 and HAM3. Removed the dust monitor from the HAM assembly/staging cleanroom between HAM4 and HAM5. 

The dust monitor in HAM6 is showing battery/power problems. Filiberto found no problems with the power supply circuit. I am going to put this monitor on a local power supply to see if the problem is in the batteries.  

After our success in controlling the EY HWWD with the h1susetmy model, I reverted the h1sustmsy back to its original model and rebuilt it against RCG2.8.3. This required a DAQ restart due to INI changes.

• Lateral: +0.2 mm (West)
  • Tolerance: ±1.0 mm
• Vertical: 0.0 mm
  • Tolerance: ±1.0 mm
• Yaw: 30 µrad CCW
  • Target: 0 µrad
  • Tolerance: ±50 µrad

Once HEPI actuators are re-attached, I will take another look at position/yaw to make sure alignment is maintained within spec.  After that IAS only needs to align the ITMx in pitch and the CPx in pitch/yaw.

Olli, Justin and Volker

Task:  Set power at bottom of the PSL periscope to 200mW and rotate the polarization by 90 deg to resonate in the low finesse mode of the IMC.

Jim and Dave. We are now running a HWWD version of h1susetmy compiled against branch2.8. The model was restarted at 11:16PDT. If we determine there is an error with channel 25 of the binary output chassis, we will replace that chassis.