We've eliminated all ground loops that  can be easily eliminated in chamber at this point. There are two remaining grounding-related issues.

1. There seems to be a serious ground loop problem for OMC DCPD and OMC QPDs, which is described in a separate alog (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=12349).
2. Shield for beam diverter cables (there are two) appear to be grounded to the ISI via mighty mouse connector. This is Beckhof and there's no signal that needs a great S/N or anything on these cables, and I don't know how the grounding of Beckhof chassis is done, but we might want to modify the in-air DB25 cable to cut the pin13 wire at the feed through.

The first problem will NOT be addressed until I hear back from Rich.

The second issue is dealt with in air (if the solution is to cut pin13 wire).

We "fixed" another tiptilt with more annoying problem than yesterday (see below).

We "fixed" a bunch of other things by changing four in-vac cables (also see below).

Apart from the issues noted above, we checked picos, OMC REFL QPD (sled), AS_C QPD, WFS(DC) and OMC SUS, and these are all good.

Everything is connected back except the DCPD and OMC QPD cables at the field rack.

We didn't like the way a big coil of cables was dangling from ISI table top to the side, no idea why this was done (just an extra weight without real merit), so we moved it to downstairs. Due to the reduced weight on the ISI, Hugh might want to rebalance ISI.

Tomorrow I'll be out, but Corey and Dan will have to do the following:

1. Re-center BOSEMs of TT2 and TT3. These are the units that we pulled and reinstalled. Most of the coils are OK, but one of the upper coils for each TT is not well centered.
2. Check if QPDs, WFS(DC) and DCPDs work using a flash light, because we messed with the cables. There are 5 QPDs, 2 WFSs  and 2 DCPDs. Right now all corner station ISC whitening are crazy, ask Daniel to fix before you go in chamber. You also need to connect the DCPD cable and OMC QPD cable back to the field rack.
3. Check if beam diverters and picos work, because we messed with the cables.
4. Unlock ISI and give it to Hugh.

After this I don't have a problem closing HAM6 for now.

WP4672. Compiling out of the RCGbranch-2.8, I installed new IOP models for h1iopsush56 and h1iopseih16. An IPC connection was established between the SUS OMC and the SEI HAM6. Basic testing using the panic feature showed the communication was working.

Build pointers were restored to the RCG Tag 2.8.3. I'm working on generic MEDMs for the new SWWDs.

Opened GV11, leaving GV18 closed until a need to open arises 

911 - Fil and Aaron to EY to work on AI/AA chassis

913 - Corey and Keita to HAM6 on ground loop hunt

924 - Jeff B and Jodi out to LVEA to inspect 3IFO

929 - Jim B working to recover various systems from power glitch - may require various restarts. See his aLOG.

935 - Gary, Margot and Betsy beginning to clean and prep for install at ITMY

1005 - Dave B restarting all SUS/SEI front ends in the corner station to remedy issue stemming from power glitch

1056 - Gerardo working in west bay

1055 - Kyle opening GV11

1310 - Instrument Air alarm at EY...sensor cable unplugged. Kyle to plug back in

with Betsy:
This morning while the ITMy structure was out Betsy and I pulled a couple floorboards out of BSC1 to take FTIR tests of parts of the chamber that had previously failed FTIR (One on chamber floor nearly dead center of chamber, other just inside beamtube towards BSC8.) 
Before taking the FTIR tests, we took a FBI sample of the floor, then wiped down the whole floor with IPA soaked Vectra Alpha wipes. 
After the floor dried, we took an FTIR in the center and replaced the floor panels. 
Took other FTIR (in beamtube floor) and re-wiped floor panels before proceeding with rest of ITMy install.  

M. Phelps, G. Traylor, B. Weaver, myself

Today we successfully installed the ITMy lower structure into BSC1.  Recabling of the reaction chain has begun.  As a health check, we hung the test mass as a single pendulum to verify the integrity of the monolithic.  All is well.  We relocked the suspension since it is second in line for alignment work a couple of weeks out.  Tomorrow, Apollo will remove the BSC install arm.

The old lower stucture was put back in the can and flown to the test stand cleanroom vicinity for upcoming 3IFO rework. 

With the addition of the planned Table Top payload per D1201388-v3, I pulled 119kg from the ISI sidewalls.  Based on previous ocurrances like this, I don't believe th eCOG sci/eng will be bothered by this CG vertical shift.  Will run TFs asap once ICS is done with their cable work.

The evidence I've been able to gather suggests the VFD (Variable Frequency Drive) saw an overvoltage while running at constant speed. OU3 is in fact an error code. This is something that has happened before, maybe a couple times a year. Don't really know what it means, will talk to EE. Since the troubleshooters (Rich & Jeff) shut down the servo despite it running before they pressed the reset button on the VFD, they were dead in the water until the servo was restarted (instructions in the OPS WIKI.)

In this situation with the Servo running and outputting max: 2048 coutns = 10 volts but producing no pressure, one could assume the pumps are not running due to a low fluid level trip or a fault at the VFD.  A trip to the Pump Station is warranted.

If the Red indicator on the DD Box is not illuminated, a fluid level trip or a power fault should be suspect.  In this case, reduce the output to the VFD by putting the servo in manual and stepping the output to zero or change the set point to zero.  Hit the green button on the DD Box, if it illuminates, ramp up the output of the servo manually or in auto mode by first reducing the set point to 5 psi and increasing it to 80 psi, do so slowly to minimize overshoot and risk of fluid level triping and over pressure valve opening.

If the Red Indicator on the DD Box is iluminated, it is likely the VFD is registering a fault.  Open the VFD box ( you must be EE qualified to do this!) and look at the VFD display, note the display.  Pressing reset from a VFD fault situation will restart everything so before doing so, as above, reduce the servo output to zero.  Once the servo output is zero, press reset and then as above, ramp up the output to 80psi.  Call me, I might be able to walk you through it remotely.

Jim, Dave.

The reason h1lsc0 did not shutdown last night is that its IO Chassis was not powered up, presumably due to the glitch. Jim powered it back on via the front panel switch. Unfortunately h1lsc0 was is a strange state, and it did not cleanly remove itself from the dolphin fabric even when all procedures were followed. Most of the Dolphin'ed front ends were glitched when h1lsc0 was rebooted, and these models were restarted. This completes the recovery from the glitch.

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.

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.

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.