J. Kissel

Dither paths, which had been added to the front end models a long time ago (see LHO aLOG 11627), have now been added to the QUAD overview screens. Not really much more to say that; It took a long time because squeezing the new banks in took a lot of rearranging and making things smaller. It was really exciting. I can't wait to do every other suspension. Stay on the edge of your seat.

For Stuart -- because we're still prototyping the more complete ESD linearization routine, I've reverted the screen to what's in the repository, and added dither paths to *that*, committed, and then re-added the prototype linearization stuff.
I updated:
/opt/rtcds/userapps/release/sus/common/medm/quad/
SUS_CUST_QUAD_OVERVIEW.adl
and there's some new screens (in the same folder):
SUS_CUST_QUAD_DITHER2EUL.adl
SUS_CUST_QUAD_DITHERINF.adl
SUS_CUST_QUAD_L1_DITHER.adl
SUS_CUST_QUAD_L2_DITHER.adl
SUS_CUST_QUAD_L3_DITHER.adl
SUS_CUST_QUAD_M0_DITHER.adl

Restarted the IOP and x1isiitmx models on the seismic test stand in the staging building, which were not running after yesterday's power glitch.

The LDAS gateway computer was frozen after the power glitch of yesterday.  Restarted the LDAS gateway, then mounted the frames directory on the frame writer and NDS computers, and restarted the daqd processes on them.

PEM and IOP models at Mid X and Mid Y were restarted to get the GPS time set correctly for the models. Timing was off by 1 second from the restart after yesterday's power glitch.  Usually this involves killing the PEM and IOP models, then starting the IOP model and pressing the BURT button as soon as the IOC server starts. The idea is to keep delay of starting the IOP to the shortest time possible, given that the GPS time is derived from the computer clock instead of an IRIG-B.

ITMY install planned for today

BSC1: two central pieces of BSC flooring will be removed to ease cleaning of two "hotspots" identified in prior vent cycle. Spots will be cleaned with isopropanol and Alpha 10 wipes. Flooring will be returned and ITMY install will proceed.

Bubba - Spool piece is out

Bubba - moving 3IFO ISI's via crane in LVEA

Peter K et al working in both H1 and H2 PSL enclosures

Aaron working on AA/AI chassis at EY, will require shutting down some systems

model restarts logged for Wed 11/Jun/2014
2014_06_11 18:11 h1ioppemmx
2014_06_11 18:11 h1ioppemmy
2014_06_11 18:11 h1pemmx
2014_06_11 18:11 h1pemmy
2014_06_11 18:42 h1iopasc0
2014_06_11 18:43 h1iopasc0
2014_06_11 18:50 h1asc
2014_06_11 18:50 h1susauxasc0
2014_06_11 18:51 h1ascimc
2014_06_11 18:51 h1iopasc0
2014_06_11 18:51 h1ioppemmy
2014_06_11 18:51 h1sushtts
2014_06_11 18:57 h1ioplsc0
2014_06_11 18:57 h1lscaux
2014_06_11 18:57 h1lsc
2014_06_11 18:57 h1omc
2014_06_11 19:10 h1iopsusey
2014_06_11 19:12 h1susetmy
2014_06_11 19:12 h1sustmsy

Red are unexpected restarts at the time of power glitch. Purple restarting frozen models. Green fixing SWWD.

Rich, Jeff, Arnaud, Dave

During the power glitch recovery Rich found that the DACs were not driving on h1hpietmy. I discovered my new SWWD on h1susey had tripped from the TMSY suspension. I had noticed earlier that two of the TMSY OSEM signals looked bogus, and Jeff found that the incorrect ADC channels were being read for two channels. To correct the problem quickly to get Rich back on track, I fixed the simulink model and compiled against RCG2.8.3 (the version which was running was compiled against branch2.8). This means the trip level is back to 15,000 counts and the resets are cached. I'll rebuild against branch2.8 tomorrow as part of the HAM4,5,6 install. Also the MEDM still has the incorrect raw signals for these two channels.

J. Kissel, R. Mittleman

While at the X-end investigating the HPI pump failure, WE remembered to put the jumper back. This is inside the Corner 1 T240 Interface chassis, S1201388 in U21. I attach a few pictures.

Pg 1 shows the internal board and the jumper in the upper left corner marked GND Shield. It's engaged in the picture.
Pg 2 shows the rack number
Pg 3 shows the serial number

We experienced a power glitch at Jun 12 2014 01:08:29 UTC (18:08PDT). The lights in the control room flickered for several seconds, the MSR UPS reported a switch to battery and back. Vacuum controls was not affected. Here is what I have found:

All models on h1lsc0 and h1asc0 stopped running

Both mid station PEM systems have DAQ timing errors

Right hand monitors for workstations opsws0,1,2 went blank

I'm going to restart the affected models. The workstations were power cycled.

R. Mittleman, J. Kissel

Rich found H1 ETMX HEPI unable to drive, and after a little bit of investigation, he found the "Pressure OK" indicator on the pump controller screen indicating badness. We drive to the end station and did the following:
- Confirmed that we heard the pumps not running.
- Found the "Heartbeat" LED blinking green, the "Level Alarm" LED solid red, and no light from the "Pressure OK" LED.
- Confirmed that the power supply was feeding the pump servo box +/-15 [V] (as indicated on the box itself)
- Confirmed with a DVM that power cable from the power supply at the pump servo box was outputing +/-15 [V]
- Disconnected and reconnected the power cable to the pump servo. No change, but all LEDs turned off.
- When into the pump controller box, which sounded as though it was whirring with power, and the digital readout said "OU3," which we presumed to mean "0.03"
- Rich hit the "RESET" button on the control panel, then hit "FWD," and the digital readout went to 0, but no action from the pump.
- Of the 4 The "OUT" spigots on the pump servo box, #1 was is sent to the pump controller, and all four spigots were sending out ~0.05 [V] which is ~0.
- With power on, the pump servo box's fan did spin up.
- Just to check, with everything re-powered on, we physically lowered the fluid level threshold a smidge, but this also failed to resurrect the pump.

We conclude that the pump servo box has let out its smoke in some unknown fashion. The serial number of the box is S1301037.

Once we got back to the control room, we found the pump controller screen white as well...

Pictures of the various things attached.
Pg 1 -- Fluid Level indicator. Looks like plenty of fluid.
Pg 2 -- Back of pump servo showing heartbeat, level alarm, pressure OK LEDs (off at this point)
Pg 3 -- Fluid level fluid lever threshold that was lower a smidge
Pg 4 -- display and buttons of control panel
Pg 5 -- front of pump servo box
Pg 6 -- Close up of serial number

J. Kissel, F. Clara

Upon hearing news that LLO suspects their recent discovery of excess noise in their ESD signal chain (see LLO aLOG 13017 and 13034) is due to an older revision (V4) of AI chassis not being able to drive long signal chains (where the unique), Fil and I checked what documentation exists for ours. The serial numbers and version for our ESD AI chassis are as follows:

Optic   Chassis S/N       Board(s) S/N      Version 
ETMY    S1103819          S1101716            V4
                          S1101720            V4
ETMY    S1103818          S1101884            V4
                          S1101890            V4


So we'll need to swap these out for V6 at the earlier.

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 ISC AA/AI chassis in the CER have been modified or verified to have the appropriate insulating film.

S1102793 S1102790 S1102782 S1102794 S1102770 S1102786 S1102766 S1102789 S1102759 S1102760 S1102788 S1102784 S1301308 S1102761

All electronics have been reconnected and powered up. All units were placed back in appropriate rack and slot location.

Filiberto / Aaron / Vanessa

Day Shift Summary
LVEA Laser Safe 

08:30 Corey – Going to End-X Lab
08:50 Jodi – Working on 3IFO hardware near the H2 enclosure
09:00 Filiberto & Aaron – Working on AA/AI chassis repair in H1 electronics room
09:26 Robert & John – Checking high dust counts at HAM6
09:30 Ski and Mount Lock & Key  - Checking emergency egress doors at Mid-X
09:35 Keita – At HAM6 testing for ground loops
10:05 Karen – Going to End-Y
10:15 Rick, Peter, Olli, & Patrick – Working in H1-PSL enclosure
10:38 Jim – Going to End-Y to swap WD chassis
10:44 SUS crew – Working on ITM-Y swap at BSC1
11:04 Aaron – Going to End-Y to work on AA/AI chassis repair
11:24 Filiberto – Working in BSC3 on cabling problem
13:04 Mitch – In LVEA west bay looking for parts
13:12 Gerardo – Working CPB assembly
15:00 Safety meeting in LSB auditorium  

Corey, Keita

We were able to get rid of a ground loop on the "solo" QPD by simply moving/touching it's Seismically Responsible Cable.

Moved to Tip Tilts and discovered that two of the three Tip Tilts had grounding loops to the table.  After much investigation, Keita appeared to discover the issue.  It's related to the BOSEMS and how the connector is close to the aluminum mounting plate which holds them.  He was able to do some "surgery" to move the connectors in a way such that they didn't short to this plate.  One Tip Tilt (OM3) was repaired, re-installed, and tested good.  OM2 still needs to be fixed.

There were three runs of cables (the two WFS cables which run to Flange D3 & the OM2 cable) which were run "under" Stage1.  According to Hugh, this is a no-no, so these cables re-run and routed around the perimeter of Stage0.

Believe Keita still had more ground loop issues on his list, and he also wanted to look at the capacitance of the OMC PZT.

Travis, Betsy, Gary, Margot, Apollo

After Apollo finished mounting the arm, elevator and 5-axis lift table on the BSC 1 flange first thing this morning, the ITMy was deinstalled from the chamber.

[Mark B Jeff B Arnaud P]

Yesterday we did some software debugging in the staging building in order to run transfer functions on the assembled quad 08.
When driving the top mass, we usually monitor the lower stages osems, in both osem and euler basis. For some reason the model running for the quad doesn't record those channels (particularly the ones in the euler basis "WIT_{L/P/Y}_DQ"). We decided not to spend too much time understanding what the model situation was, and instead simply not monitor the lower stages channels during the top mass TFs.

The undamped transfer function measurements for the main and the reaction chain are attached.