The latest HPI tools development from Stanford have been installed. They ramp the controls a better way and close the Xterm windows 5s after scripts have successfully completed. I tried it on ITMY, everything worked well.

The LSC demodulator chassis (for ASAIR_A 45MHz, ASAIR_B 18 MHz, ASAIR_B 90 MHz) has been removed from slot 8 in the ISC R3 rack.  This is for executing ECR E1300899, which calls for adding low pass filters to the 2f paths, and high pass filters for the 10f paths.

The plan is to actually modify this AS demod board with the needed POPAIR modifications and test, then do swapsy with the installed POPAIR demod and fix that board for reinsertion into the ASAIR slot.

Hard-close to soft-close GV7, Kyle

Remove yellow covers on HAM2 and HAM3 to look for POP beam, ISC

Look for ETMX ACB PDs through viewports, Richard

Add IPC sends/receives in LSC and ASC models, Sheila

DAQ restarts, Dave

HAM1 POP beam look with IR only glasses (approved), ISC

Flying a camera on the crane, Apollo

Work on EY TMS, Corey, Jeff, Andres

Guardian presentation/training, Jamie

(Andres, Corey, Jeff B, Keita)

Today the TMS Upper Structure was moved from its H2-BSC6 spot to its H1-BSC10 spot.  For the most part it was straightforward, but it should be noted that there are issues with the Alignment Templates (i.e. "cookie cutters") and/or the Overall Drawing (D0902168).

Issue #1:  When we used the called out alignment templates, it was noted that the counterbored holes were not useful, because to match the drawing, we have to flip the Templates over. 

Issue#2:  After we lifted the Upper Mass up to the Cookie Cutter and inspected the position of the Upper Mass, it was apparent we were just under an 1" off!  This was with using the called-out Templates (#23 & 24) at the correct corners.  We ended up switching the template out between corners (i.e. we used a #23 at the location the drawing calls for #24).  This got us much closer to where we wanted to be....not perfect though, we were probably a few millimeters off.

At any rate, the Upper Mass is up & torqued down.

Jamie, Alexa, Kiwamu

We went in to HAM1 this morning to deal with two tasks:

RM TT eddy current damper adjusted

We wanted to make sure the eddy current dampers (ECD) on the tip-tilts (TT) in the REFL paths (RM1 and RM2) were set correctly after we touched them in the previous incursion.  Bram sent us a procedure for setting the spacing, which we followed.  There are four ECDs, two front and two back, on the left and right side of the mirror mount (all in the same horizontal plane):

• check mirror hanging freely (undamped)
• Undo ECD screw locks (lock nut on front ECD and set screw on back), and back out ECD screws
• turn 8-32 ECD screws in until it just touched the coper nub
• back out ECD screw between one (1) and 1.25 turns

The procedure went smoothly, and the TT seem to behave fine after, although we have no rechecked the YAW transfer function.

I'll try to find a DCC for the ECD setting procedure.

POP search

Kiwamu climbed under HAM1 to wriggle over to the north side of the table to try to find the POP beam coming out to the POP periscope.  Unfortunately he wasn't able to find anything, using both an IR card, a viewer, and I clean wipe.  We suspect the beam is either not coming through the swiss cheese baffle, or is being lost in HAM3

Preparation for opening to X-end - Monday?

Found IP5 not pumping effectively due to improper settings -> nominal settings for nominal pressures not -6 torr environment -> changed "Imax" value from 10mA to 200mA and "Pmax" value from 50watt to 200watt -> Ok now

(Anamaria, Kiwamu, Chris)

We're gradually converging on a shared LSC model for L1 and H1. Here's what we have in place on H1 so far:

• New library parts encapsulate all top level blocks in the LSC model (LSC, PSL, IMC, ALS, SYS).  See lsc/common/models in userapps.
• There are also new library parts for the LSC sensors (to handle their signal conditioning and power normalization), for the dynamic power normalization logic, and for the lockins.
• An unused set of per-sensor static power normalization factors was removed.
• Static power normalization of REFL_SERVO_SLOW was removed.  Also, the IMC row and the REFL_SERVO_SLOW column were removed from the dynamic power normalization matrix.  (All of these things will be normalized using the gain sliders in the common mode and IMC boards.)
• IPC outputs to the ASC model for SPOP and SASY are now statically normalized.  Another set of IPCs that sent POPAIR_B to ASC were removed, since they appeared to be redundant.
• The switches that enable a SQRT calculation for SPOP and SASY were moved inside the dynamic power normalization subsystem, so their channel names changed. (Example: LSC-SPOP18_SQRT_SWT -> LSC-POW_NORM_SPOP18_SQRT_ENABLE)
• An initial set of channels was selected for science frames.

In addition, we experimented with -- but eventually reverted -- a variety of approaches to organize and simplify the 7x34 LSC input matrix and the other LSC matrices.  (It seems that we need to develop a new RCG matrix part if we want to make significant improvements here.)

The model, libraries, and MEDM screens have all been updated in the SVN.  However, the L1-H1 merge is still ongoing.  One remaining stumbling block is the readout of the FSS_RFPD channel in the PSL top_names block. (This was introduced to the LSC model long ago as a temporary hack, and we're still laboring to get it moved to a PSL model where it belongs.)

After discussions yesterday, we agreed on a plan for cleanroom usage for upcoming work in the LVEA. The work includes, but is not limited to, ACB/CPB/OFI assembly and ITM swaps. The easiest solution seemed to be clustering the work in the West Bay. We will add a Work Space cleanroom and a garbing/staging cleanroom to the four existing cleanrooms. (Please see the attached sketch for details.) Apollo will move the additional cleanrooms as soon as they get a chance.

TF crashed (watchdog trip) last night at 6pm local. Very weird. The attached plots show the details. First plot shows all the excitation channels for a 3 hour period around the watchdog trip, you can clearly see where we were driving at ~3000cts on each exc channel (this wasn't happening at the exact moment of the trip. The second plot shows the V4 excitation channel and the V4 L4C that tripped over a 100 second window. There is a very low drive, but  high frequency excitation that does not look like the other parts of the transfer function being run at the time. But, this excitation is also roughly at the same time as when we were driving on a different (H1) channel.

Fabrice was able to copy the signal from the V4 excitation channel at the time of the trip and send it again with some matlab trickery, but we saw nothing on any of the chamber's (HEPI, ISI, SUS) sensors. So we still don't know what caused the trip. Weird.

Following the DAQ restart to service the h1sushtts model change, I noticed that h1lsc DAQ status changed to 0x2000 (new ini file). I pressed the "DAQ Reload" button on h1lsc which cleared the error, and then realized  that there is most probably a mismatch between the lsc model and its INI file. True enough, the model was started on Tue 17th but the model was changed and a "make install" issued Wed 18th. At this point the lsc data is most probably corrupted in the frame.

I restarted the h1lsc model to bring the software and the INI file back into synchronization.

J. Kissel, J. Rollins, A. Staley

In order to align the in-vac REFL path, as well as address proper spacing of the RM's eddy current damping copper block / magnets JAmie and Alexa need the RMs steerable and dampable. However, with the battles I've been having getting the HTTS model up and running, I hadn't noticed the obvious -- if we connect the OMs (whose models are down and out, and screens are not-yet functional) to the USERDACKILL, which blocks all HTTS drives (including the RMs) -- one cannot operate the RMs.

I have subsequently, temporarily removed the OM1, OM2, and OM2 inputs to the USERDACKILL, recompiled, reinstalled, restarted, and restored the h1sushtts on the h1asc0 front end. Now, the RMs can damp and actuate as desired.

Note -- I'm still not finished with the HTTS and HAUX model modifications; please bare with me in this time of flux. I hope to get through with this by the end of the week.

I lowered the locking threshold this mornig because IMC wasn't locking well. The followings are the current values:

H1:LSC-MC_FM_TRIG_THRESH_ON = 2000
H1:LSC-MC_FM_TRIG_THRESH_OFF = 2000
H1:IMC-TRIG_THRESH_ON = 2000
H1:IMC-TRIG_THRESH_OFF = 2000
H1:IMC-DOF_FM_TRIG_THRESH_ON = 2000
H1:IMC-DOF_FM_TRIG_THRESH_OFF = 2000
 

We will watch for changes in the alignment onto the ALS refl PD. 

PRMI is finally aligned and it is now flashing. This should help us to find the POP beam because of higher intra-cavity power and reasonable alignment.

After PRMI was coarsely aligned, I went to ISCT1 and quickly looked for the POP beam, but no beam was found. I also toggeled the HAM1 POP beam diverter, but it didn't help.

The above plot is an exmaple of time series where you can see that ASC_POP_A goes up to more than 100 counts because of the recycling.

Alignment:

• I started from yesterday's condition in which the beam was centered on ITMX (see alog 8996)
• Using PR2 and PR3, I adjusted the yaw alignment such that the beam goes through the center of both BS baffle and ITMX.
  • This pushed PR2 from -220 to -2270 counts in its DC bias.
• I steered ITMX and found the PRX fringe.
• Then I moved onto the PRY alignment.
• Keita suggested to take a look at the BS BOSEMs to see if they are at a similar position to that of HIFO.
  • According to the BS BOSEMs, the pitch angle is different by -800 urad from that of July 25th.
  • This large pitching sort of made sense -- because the BS was tiltled so much that the incident beam needed to be low on BS to hit ITMY. Indeed we saw that the beam was low on BS when PRY flashed.
• We cahnged the BS DC bias to get the same pitching as July 25th.
  • Pitch DC bias went from -159 to 44.81 counts.
• Then, I tweaked ITMY in pitch and yaw and BS only in yaw until PRY flashed.
• We should also check the BS yaw by looking at the BOSEM readouts and possibly steer it back to July 25th while keeping the fringe by steering ITMY yaw.

Chris, Aaron, Filiberto, Daniel

Thanks to a very motivated crew we have fabricated 2 PD amplifiers for the ITMX and ETMX baffled diodes. The amplifiers are installed, powered up and connected to the slow controls system. The software for ETMX is ready. We still need to activate and test ITMX. The channel names are H1:AOS-ETMX_BAFFLEPD_1/2/3/4 and H1:AOS-ITMX-BAFFLEPD_1/2/3/4.

TF running on ETMX HEPI. Should complete sometime in the morning. Running from opsws1.