J. Kissel

Nine for the mortal men, doomed to die...

Another successful evening of CDS bug-finding. The h1sush34 computer has locked up, and the data concentrator / DAQ / framebuilder is dead because of my further attempts to make front end model changes to the SUS. 
YOU'RE WELCOME. 
Details and status below.

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After completing the pending model changes on the HXTSs, I began recompiling, reinstalling, restarting, and restoring (4R'ing) all SUS on each of there respective front ends. Here's the rather gloomy status report:
             Main Library Part       Changes complete       Successfully Compiles        Installed         FE Process Restarted            Clean DAQ Status
h1suspr3        HLTS_MASTER               yes                       yes                     yes                    yes                            no
h1sussr3        HLTS_MASTER               yes                       yes                     yes                    yes                            yes
 
h1susmc1        HSTS_MASTER               yes                       yes                     yes                    yes                            no
h1susmc3        HSTS_MASTER               yes                       yes                     yes                    yes                            no
h1suspr2        HSTS_MASTER               yes                       yes                     yes                    yes                            no
h1sussr2        HSTS_MASTER               yes                       yes                     yes                    no(see detail 1)               no

h1susmc2        MC_MASTER                 yes                       no(see detail 2)        n/a                    n/a                            n/a
h1susprm        MC_MASTER                 yes                       no(see detail 2)        n/a                    n/a                            n/a
h1sussrm        MC_MASTER                 yes                       no(see detail 2)        n/a                    n/a                            n/a


Detail 1:
After successfully modifying and 4R'ing 3 of the 4 HSTSs which use the HSTS_MASTER, I figured the last would be a breeze. Of course not. Doing things no differently than on he other three, I successfully compiled and installed the h1sussr2 front end code. However, when I restarted the front-process,  the restart hung in the middle of turning on EPICs communication, and proceeded to crash the front end, and take down the entire data concentrator / DAQ / frame builder. I have a feeling that this is because of an error similar to what we found last Thursday on the h1sush56 computer (see LHO aLOG 8335). Note that h1sussr2 lives on a different computer -- h1sush34.

Detail 2:
Each of the models using the MC_MASTER library part complain the following same error snippet during compilation which is beyond me:

/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2/h1susmc2.c: In function 'feCode':
/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2/h1susmc2.c:1718: error: 'adc0' undeclared (first use in this function)
/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2/h1susmc2.c:1718: error: (Each undeclared identifier is reported only once
/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2/h1susmc2.c:1718: error: for each function it appears in.)
make[3]: *** [/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2/h1susmc2.o] Error 1
make[2]: *** [_module_/opt/rtcds/lho/h1/rtbuild-2.7.2/src/fe/h1susmc2] Error 2
make[1]: *** [default] Error 2

This smells like it has something to do with the connections to the ADC0 parts, because there is certainly an ADC0 in every one of these models -- that the error says adc0 is undeclared must be a red herring. I've got an email out to the relevant CDS crew, I hope to hear from them and fix these problems by the morning.

I have still not begun MEDM screen modifications. I will do so once we resurrect each of the nine mortal men.

I've installed the black glass plates on optics RH3, RH5, RH8 and LH3 in HAM 3. The left over spares are on the upper shelf in the clean room outside HAM 2 and the remaining black glass holders are bagged on the lower shelf.

LN2 delivery to CP4

Cheryl V., Joe D. working on mode cleaner

08:47 Reverse osmosis service
09:22 CPB work start in North bay
10:16 Kyle R. to replace the instrument air pressure regulator at CP4's level control valve
10:38 Thomas V. testing rotation stage electronics in CER, LVEA by H1 PSL racks
11:11 Kyle R. done replacing instrument air pressure regulator
11:50 Rick S. to lab to toggle noise eater on the H1 PSL laser
12:21 Reverse osmosis service
13:21 CPB work start
13:30 Jim B., Richard M. restarting H1 PSL frontend and IO chassis
13:30 Jodi F., Apollo installing dome on BSC9
13:44 Corey G. getting parts out of test stand clean room
14:13 Hugh R. seismic leveling of ITMX with HEPI
15:16 Jeff K. restarting SUS models
15:55 CPB work done

As SUS completed the ~6mm shift North yesterday, our turn to hoist the ITMx to height.  IAS logged that the ITMx need to be lifted by 3.6mm; however on 24 Oct I observed the Optical Table to be just 1.8mm low.  So I split the difference and lifted the system 2.7mm.  All went smoothly with low SD of the DI readings and very little off axis movement.  We'll see what IAS says next.  I was not able to evaluate the level of the table.  We'll do that when we do next tweeks and personnel are available.

Jason and I measured the support tube nozzle flange location with respect to the chamber center position.
Measurement was shot to the back side of the flange where it joins the the nozzle tube.
The results are:

Right side angle is 120deg, 34', 12" at a horizontal distance from the total station of 2356mm.
Left side angle is 59deg, 19', 17" at a horizontal distance from the total station of 2354mm.
 Difference is Y- 1.9mm.

HEPI medm screens were updated to the latest version which is covered by ECR E1300816.

The update was performed under WP #4241 which is now closed.

All PSL models stopped running at 12:07 PST with errors of ADC TIMEOUT.  I powered off the computer, then Richard power-cycled the I/O chassis using the power switch on the front of the chassis which appeared to work.  On power up, the computer could still not see more than one card in the I/O chassis.  Powered the computer down again, and Richard completely disconnected the power from the I/O chassis.  On power up, the models restarted normally.

After Fabrice okayed our close-out tests, Hugh and I headed down to the end-station to close out the seismic prep for closing the chamber. Hugh locked HEPI, while I checked cabling and locked the ISI. Other than adding a cover, we should now be ready for the dome.

Existing regulator was working but had a significant leak through its diaphram.  

Mark, Eddy, Tyler and I installed two in-chamber cleaning dust barriers into the south nozzle between BSC3 and BSC2 to provide laser safety in BSC3. The operation went well and was completed before lunch. (Note-I went in first to wipe down the floor and the south bellows convolution. The floor was in good shape as evidenced by the fact that the wipe came away clean except for oxidation. The bellows convolution was not terrible but definitely dirtier than the floor: there were some metal fines and a couple of viton shreds.) 

Randy helped the CPB folks throughout the morning. 

Eddy and Tyler moved a HAM work platform from the east side of HAM1 to HAM2 just before lunch.

The entire crew went down to BSC9 aka ETMX after lunch to work on the dome. There was a bit of a delay while walking plate bolts were removed but the dome was returned to the top of the chamber by the end of the day. I spent some time stowing the tooling etc. that is in the lower level staging area in preparation for moving the cleanroom so that the door can be replaced tomorrow.

Not a bad day's work!

This morning I was unable to use tortise svn to do an svn update on h1ecatx1, jonathan managed to do one using the command line but something is wrong.

Now PLC2 on that machine is giving the message "choose run time system".  I'm not sure why this happened.  I tried stopping the plcs and shut down the OPC powershell window, but when I reran the install scripts I got the same choose run time system message, after which the plc does not run.  So now I am restarting the machine.

I was also trying to use remina on opsws5 to log in to h1ecatx1, now opsws5 is crashed.  Also, earlier today remina crashed on opsws3, and I was not able to use it again on that machine. 

Also, the PSL shut down about an hour ago. 

Started a round of TFs for SRM at gps = 1067655775. Measurement will take ~8h to complete.

Keita asked me this morning to take a look at TMSX damping. I am not sure if it is because it is moving too much, or if it was just to make sure it's working.

In any case, damping looks to be functionning fine.

Attached are some results comparing TMS motion damping on vs damping off in each DOF with the ISI floating (no active control). The first picture shows the time series and the second one the spectra.

Qs are reduced by a factor of (roughly the order of) 100 for the first modes of each dof. The last picture shows the filters engaged and the gains (for future reference)

Joe Gleason, Volker Quetschke

We've reduced the main beam power measured at the bottom periscope mirror to approximately 260mW using the main (second) power control stage. We noticed that the PMC locking was unstable when we entered the PSL and were not able to remedy the issue. The throughput was approximately 80% according to the reflected power. The transmitted power looks to be uncalibrated at the moment and shows only about 1/10th the actual output on the PSL_PMC MEDM screen. Should the throughput change to the usual maximum we will still be under the 300 mW max required for the HAM2 work.

Travis, Betsy

Today, we attached the QUAD pusher and weight-off-loading mover assemblies on the ITMx QUAD and it's ISI.  Attempting to maintain the yaw and Y-direction alignment, we pushed the suspension structure about 6mm.  We then reclamped the QUAD with it's dog clamps and removed the pushers and movers.  Next up:  SEI HEPI Z, and Yaw adjustment, followed by another IAS measurement suite.

Some SUS items were moved from X end to Y End TMS Lab in preparation for dome and doors going back on BSC9 (maybe tomorrow). Some items (iLIGO SEI scissor jacks/blue iron, cables) were moved from Y End to Y Mid. 

A little work was done at Y Mid in preparation for receiving four ISI storage containers from LLO this week. 

The iLIGO baffle was removed from the X Arm Spool and preserved clean. Work on cryopump baffle continued.

Three dust barriers were located (two clean) and moved to the High Bay for in-chamber use. One will need the Viton strip re-attached.