[Jenne, Vaishali, Karl, Betsy]

Koji pointed out to me that even though the new black glass beam dump had been sitting on a HEPA table at the 40m, since it has been so long since it was cleaned, it could accumulate a bit of dust or film. 

So, we temporarily put the razor dump back, disassembled the black glass dump, and with Betsy's guidance cleaned the surfaces of the black glass with first contact.  We then reassembled the dump and put it back on the table. 

Taking advantage of a few minutes while those working on the cleanroom took a short break, we transitioned to laser hazard so that we could do a fine alignment of the beam dump with the DRMI flashing.  The LVEA was transitioned back to laser safe after this brief work was completed, so that the cleanroom team could work more easily.

This was h1calcs model change was covered under the continued work described in
WP #6572
ECR E1700121
II 7828

This restart was to incorporate a few more EPICs monitor channels (24 or so) to support commissioning of the new SRC Detuning Infrastructure (see LHO aLOG 35547). In addition, I moved the pick-offs for calculated time-dependent correction factors that feed into the next subsequent calculations upstream of the final-answer 128 [sec] low pass. No change was made to the functionality of the infrastructure for h(t), these are all control-room only used redundant infrastructure. 

The changes to the h1calcs model is actually just changes to common library parts, which have been committed to the userapps repo:
/opt/rtcds/userapps/release/cal/common/models/
    CAL_CS_MASTER.mdl
    CAL_LINE_MONITOR_MASTER.mdl

These EPICs channels have been added to the various MEDM screens, and those screens have been committed to the userapps repo under
/opt/rtcds/userapps/release/cal/common/medm/
   CAL_CS_TDEP_F_C_OVERVIEW.adl
   CAL_CS_TDEP_F_S_OVERVIEW.adl
   CAL_CS_TDEP_KAPPA_PU_OVERVIEW.adl
   CAL_CS_TDEP_KAPPA_TST_OVERVIEW.adl
   CAL_CS_TDEP_OVERVIEW.adl

Initial results (i.e. the 30 minute NLN lock we just had) indicate that moving the pick-offs that pass one answer to the next calculation upstream of their 128 sec low-pass has cleaned up the final answers. Plots to come when we have more data.

Measure ASC sensing matrix, including POP WFS. (Should be quick - amplitudes all tuned already)

Now that we've got infrastructure in place for tracking SRC detuning parameters live, I'd like to repeat Evan Hall's study from LHO aLOG 27675, putting offsets into the SRCL loop and see if the infrastructure / parameters track the change in detuning as that has been confirmed to do. 

I request 30 minutes of full, NLN IFO time.

Here is a link to a Vertex scan taken a few months ago:  https://alog.ligo-wa.caltech.edu/aLOG/uploads/29517_20160907141626_09062016_Vertex_SEM1500_analog.pdf  Note: the apparent amplitude discrepancies are due to differing multiplier voltage settings.  As such these two scans are for qualitative comparisons only.

I replaced the burned-out incandescent lamp with an upgraded LED version (Data Display Products, miniature, wedge-base 24-28VAC white WB200-FW4K28HD)

I de-energized Kobelco and valved out water to QDP80. Tomorrow during commissioning I will enter LVEA and de-energize turbo stations.

Maintenance Update as of19:00UTC:

• 18:45 - Kyle back from EY, into LVEA, now done
• 18:49 - DaveB back from EX
• 18:54 - DaveB, HWS code ready to start
• 19:00 - Greg, DMT code being backed out

• 19:22 - Robert and Evan to EY and EX, hunting noise that started two weeks ago
• 19:22 - Greg, DMT reverted to previous code, call if any issues found

Since the HWS table work was completed before we were ready to start locking, we pulled the rest of the L4Cs. 

Please let me know if there are others that need removing.

Unfortunately we could not get DMT hoft to send output downstream with this change. We are going back to calibration 1.1.5 for now.

Both pipelines were restarted again at 1176577576 to pick up version 1.1.5 again.

Went out today to tweak the power of this laser, as it is still glitching, and found the interior of the box to be very warm.  This is highly unusual.  I also found the exterior mounted box that holds the DC/DC converter that powers the laser to be very warm as well.  My suspicion is that something, likely the laser, is drawing more current than it should.  I checked the other oplev lasers in the LVEA and none of them were running warm like this.  The quickest fix at this point is to swap in another laser.  Unfortunately the only laser currently ready for swap in is SN 189-1, which happens to be the laser I just removed from the ITMy oplev due to concerns over an ~0.44 Hz feature that might be from the laser.  Doing a quick spectrum of the new ITMy oplev laser SUM, pitch, and yaw signals after install on 4/11/2017 (attachment 1) and this morning (attachment 2) shows that the laser is currently very noisy compared to just after install (likely due to the increased operating temperature), but also still shows a feature at ~0.44Hz.  As this ~0.44Hz feature is still there with this new laser, the feature is likely either from the the electronics of the ITMy oplev (QPD, whitening chassis) or is something real that the oplev is only a witness for.  Assuming laser SN 189-1 checks out in the lab, I will re-install SN 189-1 into the ITMy oplev at the next available opportunity.