- Hugh out to HAM6
- Betsy to Beer garden then to the west bay
- Jeff out to beer garden with film crew
- Jason to ITMX alignment
- Fred and film crew in the LVEA
- Sheila and Greg into the PSL for pictures
While doing the AA/AI rework last week, installed grounding plugs (per L1200193) to all SUS coil drivers at both EY and EX. The plug is attached to the DB9 connector labeled Test Input. This completes all installed electronics in CER, EX, and EY. Filiberto Clara
5 viewports were installed on MCB 2 today. Ref. W P 4673.
Per bugzilla integration issue 463, looked at AA/AI chassis to verify units have the proper insulating film used to isolate the -15V regulators to the chassis metal wall. All AA/AI chassis at EX have been modified or verified to have the appropriate insulating film. SUS S1100321 S1105306 S1105295 S1103819 S1202273 S1202611 S1202819 S1202612 S1202820 SEI S1300132 S1300135 S1300136 S1300140 S1300144 S1300611 ISC (including Whitening chassis) S1102763 S1102781 S1102777 S1101606 S1101587 S1101631 S1101642 All electronics have been reconnected and powered up. All units were placed back in appropriate rack and slot location. Filiberto Clara
Per bugzilla integration issue 463, looked at AA/AI chassis to verify units have the proper insulating film used to isolate the -15V regulators to the chassis metal wall. All AA/AI chassis at EY have been modified or verified to have the appropriate insulating film. SUS S1107601 S1105299 S1105300 S1103818 S1202280 S1103775 S1103772 S1103774 S1103773 SEI S1103403 S1103401 S1103406 S1103409 S1103510 S1103501 ISC (including Whitening chassis) S1102755 S1102764 S1102765 S1101600 S1101638 S1101595 S1101579 All electronics have been reconnected and powered up. All units were placed back in appropriate rack and slot location. Filiberto Clara
Dave reported this morning that TMSx osems readback were moving too much. Looking at a spectra from one of those osems, a 1777Hz line appears to be the main source of oscillation. This looks similar to a problem we had few months ago with one of the sat boxes of the BS (cf alog 7237). We will reboot the sat box and see if that changes it.
The weather station at Mid X has been restarted after replacing an isolator between the weather station and the comtrol serial interface box. Wind alarms have been set to 30 and 40 MPH. End X is online, but the anemometer is not working at this time.
Keita is removing a tiptilt so I locked up the ISI. It was already out of balance and probably should have remained locked anyway. The cables that were moved from stage1 was enough to unbalance the table.
Once Keita returns the TipTilt, SEI will need to rebalance the table.
No restarts reported.
Today the PSL is down for maintainence so that means
Frontend is down
PMC is unlocked
FSS is disabled and ref cav unlocked
ISS at 8% diffracted power with 0 volts on PDA and PDB
- Keita working in HAM6
- Fil and Richard working on AA and AI chassis
- Peter, Patrick, and Olli working on PSL maintainence
- Jodi working on 3rd IFO in LVEA
- Robert going out to the vault
- Gerardo working on CPB
I have created new MEDM screens for the new software watchdog (SWWD) system. These are macro substituted screens, launched from H1CDS_SUS_SWWD_LAUNCHER.adl which is accessed from the SITEMAP via the SWWD option under the WD pulldown. Currently there are two new MEDM screens for EY and HAM6.
model restarts logged for Fri 13/Jun/2014
2014_06_13 11:08 h1broadcast0
2014_06_13 11:08 h1dc0
2014_06_13 11:08 h1fw0
2014_06_13 11:08 h1fw1
2014_06_13 11:08 h1nds0
2014_06_13 11:08 h1nds1
2014_06_13 11:11 h1iopiscey
2014_06_13 11:13 h1iscey
2014_06_13 11:13 h1odcy
2014_06_13 11:13 h1pemey
no unexpected restarts. DAQ restart to support SWWD work, ISCEY to clear DAC error.
The attached screen shot ZtorZCoupling.ing shows the meaured transfer function from stage 1 Z drive to the T240 rZ signal (blue line) and the measured magnetic coupling which was done in the staging building, there are only
two points in this measurement as of now. If you divide the measured magnetic coupling by 10 it exactly matches the transfer function, so I'm not sure what is going on there, but the case for the mystery coupling being magnetic is pretty strong.
The attached T240 rZ Signal shows the signal from the T240 rZ (trciky huh?) in low blend mode, with the subtraction in three different states
Blue = OFF
Orange = ON
Red = ON with the wrong sign (gain = -1)
You could convince your self that above 60mHz the subtraction is doing something good (it is mostly aimed at below 100mHz), nothing below 60mHz and something very bad at 60mHz, that you get almost
identical badness at 60mHz for either sign must (might?) mean something
The figure YAW OPLEV shows the same thing using the optical lever signal
The fact that we don't see a factor of 50 improvement isn't very surprising, but the fact that the subtraction makes things worse in the middle of the measurement band is. Right now I'm speculation on drives from other degrees of freedom coupling to the T240s although I
the mechanism isn't very clear to me
We did take a look at rZ to Z coupling, which might create an unindented loop when the subtraction gets turned on, but didn't see anything.
I've been using verious templates in /ligo/svncommon/SeiSVN/seismic/BSC-ISI/H1/ETMX/Data and ETMY/Data
The ETMX_Performance ....xml are passive Twist_Measurement ....xml are driven
I've added a few more plots to the T240rZ.... plot
MoreT240Performance
Blue = OFF
Orange = ON
Red = ON with the wrong sign (gain = -1)
Blue
Black Start blend (no T240 in loop)
Green Lower Blend Frequency, ~40mhz pervious ow blend was at ~100mHz (subtraction on)
Purple Lower Blend Frequency (no subtraction)
there are really to many lines here to make an sense of, but as far as the T240 thinks, subtracting hurts at 60Mhz, more interesting is the MoreOpLev plot which shows that above 200mHz it doesn't seem to matter what I'm doing with stage 1 (More OpLev)
if anyone really wants this is all in ETMY_Performance_testbb.xml
Thanks to the efforts of SUS I was able to get in and look at the ring heaters of ITMy today. There are no apparent problems with breakage of either the glass formers or the macor retaining pieces. However, the center macor piece (D1002545) looks to have wandered off center quite significantly. I didn't have any pictures from that angle while the quad structure was still in chamber. So, unfortunately, I am unable to determine when it wandered off, but it definitely warrants looking at ITMx closely before it leaves BSC 3 if possible. It should be noted that this is the older style of ring heater, but the macor element standoff is the same throughout all but the most recent version.
As requested a picture with a few labels, showing how the macor has wandered off the center point where it should be.
The old ring heaters on ITMy have been removed from the old quad structure. While I was packaging the upper and lower ring heater I noticed quite a bit of particulate coming out. Looks like glass, certainly warrants a closer inspection.
J. Kissel Dither paths have been added to the HSTS OVERVIEW screens, completing all development for ECR E1400105 / II 722. I attach a screen shot of the new screen. I also fixed a few bugs found in the QUAD implementation as noted yesterday, and updated the BSFM screen, in which Stuart found some bugs (see LLO aLOG 13048). These screens are also attached. As soon as Stuart gets the model changes for his HSTSs, HLTSs, and QUADs installed, and updates to the new screens, we can close out the integration issue and begin using these paths as need be. Note, that though I committed the dither path changes, I've retained the still-under-development local modifications for the prototype ESD linearization (initially installed a month ago) so the common parts for the QUAD, ${userapps}/release/sus/common/medm/quad/SUS_CUST_QUAD_OVERVIEW.adl ${userapps}/release/sus/common/models/QUAD_MASTER.mdl remain locally modified.
Swapped parts between Mid X and End X weather stations until the defective part was isolated. Left End X weather station up, but the anemometer does not work, which is a separate problem. Temperature is being reported properly for End X. Mid X weather is down until a replacement WeatherLink Isolator can be found.
Work of AA AI work at both end stations is complete. All electronics are powered on and reconnected. Will alog serial numbers of units that were either modified or verified later. When turning on SUS electronics at EX, notice that the output of a Quad Top Transmon Coil Driver(S1102670) was oscillating. Brought unit back to the lab to take closer look. Filiberto / Aaron / Vanessa
- 8:30 am Filiberto and Aaron to Y-End, to retrieve equipment for use at X-End.
- 8:34 am Corey to the CS VEA, continue work on HAM6.
- 9:25 am Filiberto, Aaron and Vanessa to X-End, continue work with AA/AI chassis.
- 9:35 am Margot to the CS VEA, West bay area work.
- 9:56 am Dale and camera crew to CS VEA, film around West bay and HAM6.
- 10:23 am Cyrus to Y-End, computer work.<--- Done by 11:00 am.
- 10:31 am Thomas to CS VEA, computer work channel fix.
- 11:06 am Dave from CS-CR, DAQ reboot.
- 11:09 am Andres to CS VEA, retrieve item for assembly.
- 11:10 am Dave from CS-CR, ISCEY code restart, succesful.
- 12:23 pm Dave and Jim to Y-End, AI chassis investigation.--->Then to X-Mid for weather station work---->Then to X-End for more Weather work.
- 2:16 pm Jim returning to X-End for more weather work.
