Apollo – Move the installation arm from BSC3 to BSC1
Apollo – Remove the spool on the X-Arm for alignment
SUS crew – Getting ready to remove ITM-Y lower structure
Keita & Corey – Working in HAM6
Gerardo – CPB assembly work
EE – Repair work on AA and AI chassis 
 

model restarts logged for Tue 10/Jun/2014
2014_06_10 09:21 h1susbs
2014_06_10 11:09 h1fw0
2014_06_10 11:09 h1fw1
2014_06_10 11:09 h1nds0
2014_06_10 11:09 h1nds1
2014_06_10 11:12 h1broadcast0
2014_06_10 11:26 h1iopsusey
2014_06_10 11:35 h1iopseiey
2014_06_10 11:41 h1iopseiey
2014_06_10 11:58 h1isietmy
2014_06_10 11:59 h1hpietmy
2014_06_10 12:01 h1susetmy
2014_06_10 12:01 h1sustmsy
2014_06_10 12:39 h1broadcast0
2014_06_10 12:39 h1dc0
2014_06_10 12:39 h1fw0
2014_06_10 12:39 h1fw1
2014_06_10 12:39 h1nds0
2014_06_10 12:39 h1nds1
2014_06_10 12:57 h1iopsusey
2014_06_10 12:58 h1susetmy
2014_06_10 12:58 h1sustmsy
2014_06_10 13:01 h1iopseiey
2014_06_10 14:01 h1susetmy
2014_06_10 15:23 h1sustmsy
2014_06_10 16:20 h1hpietmy
2014_06_10 16:22 h1isietmy
2014_06_10 16:29 h1susetmy
2014_06_10 16:30 h1susetmy
2014_06_10 16:30 h1sustmsy

no unexpected restarts. SUS BS work green, SUS EY watchdog yellow, supporting DAQ restarts blue.

Baffled to find many ground loops, then I remembered that I was baffled by this same thing in all chambers.

Tested some (not all) of the HAM6 ISC cables for ground loop according to T1200131.

Each in-air cable was disconnected from the chassis while still connected to the chamber feed through (other in-air cables were still connected to both the chassis and feed through), and the continuity between the cable shell and the chassis ground was tested using DVM beeper (any continuity=bad).

FYI, for all of the above cables, there was a continuity between pin13 and shell (it's supposed to be like that).

WFS (both DC and RF), OMC PZTs, OMCS and SEI cables were not tested but I'll test at least WFS and OMC PZT.

Anyway, this is not acceptable for the chamber containing our main read out, and should be fixed in chamber.

Many more trips today, many of which are dtt sessions ending, some come from ramping the blends from TBetter (40Mhz) to Start (750mHz, no t240) which seems to trip us every time

  There was some speculation that we might have a ground issue in the T240s, similar to what we had earlier with the GS13s.

To test this we lifted the shield to ground jumper in the corner #1 T240 electronics box on the ETMX-ISI. We then drove the system in the z direction (loops on, blends = start)

and looked at the individual T240 channels

  the first thing is that all of the Z channels look the same, so lifting the shield ground didn't effect anything here.

  the other thing is the horizontal sensors which have some coherence and a flat response which is kind of odd

  WE should remember to put the jumper back

  The second plot is the same set up except now I'm plotting the transfer functions to the modal T240 signals. We expect some cross coupling at the level of a 1-3% due to gain mismatch in the electronics, which

is kind of what you see in the vertical signals, the rX and rY are smaller then the Z by about the right factor and show the same slope. While the horizontal signals show something completely different, the 1/f^2 coupling that we have been working on

Dave, Jim

A hardware watchdog chassis has been installed in the suspension electronics rack under the Binary Input and Output chassis at EY.  It is currently connected to monitor ports on the satellite amps for M0.  It is NOT connected to interrupt the drive from the coil drivers.  This is only for testing the watchdog.  The RMS output from the watchdog is connected to the h1pemey AA chassis channel 31, while 3 of the outputs to turn off the coil drivers are connected to h1pemey AA chassis channel 28-30 for monitoring.

The watchdog is powered up, and we can monitor the status, but we have not succeeded in sending commands to set parameters for testing.

Dave, Jim, Jeff, Filiburto

Software Watchdogs

I created new h1iopsusex and h1iopseiex models which use the new RCG2.8 Watchdog and DACKILLIOP parts. This permits the timed shutdown of SEI and SUS DACs if the excitation of the suspension(s) persits over a period of time. These parts are available with RCG2.8.3, so initially I built the models against this. For test purposes the countdown timers have been kept short, between 10 and 30 seconds.

I put together a new software watchdog MEDM in userapps cds/h1/medm/H1CDS_SOFTWARE_SUS_TARGETEDWD_EY.adl (targeted watchdog). We are starting with EY since this is the easiest model (one chamber, simple mapping between SUS and SEI, one IPC channel).

Jeff setup SUS ETMY to drive the DACs, I then tested the watchdogs using oscillators I built into the IOP for test purposes. There were no problems found.

I then set the release pointers to build out of RCG branch-2.8 to get the final version of the WD parts (with trip levels in mV) and the reset-cached bug fixed.

Hardware Watchdogs

To support in monitoring-only testing of the hardware watchdog (HWWD) in EY, I modified the h1susetmy model to add the HWWD part, and link it to the Binary input and output channels which are connected to the unit. We were able to read back the status of the front panel LEDs, but were unable to set the WD parameters. I then installed the HWWD part the h1sustmsy as a test of using different Binary chassis, but the problem remains. I backed out the change in h1sustmsy, and made a copy of etmy called h1susetmx_hwwd.mdl. By reverting the models I did not need to do a DAQ restart.

The release pointers were set back to 2.8.3 and the sus models were recompiled and restarted.

Situation at the end of the day

So at the end of this, the IOP models are the new targeted/timed DACKILL version built against Branch2.8, the SUS ETMY,TMSY are back to the original and the SEI ISI/HPI models were not changed today.

There are 12 unmonitored channels that will be removed tomorrow.

Gary

The LSAT lifting plates are attached to the lower structure.

Mark, Ed, Gary

The elevator, 5-axis table and installation arm have been removed from BSC3. The strengthening flange plates and flange protectors are installed on BSC1. We will finish installing the arm in the AM and fit the table and elevator.

This morning, we used the Genie "duct jack", the install arm, elevator, and 5-axis table to install the newly assembled ITMx Monolithic lower suspension into the chamber and mate it to it's upper structure.  All went as expected.  We then proceeded to start reconnecting wire segments and cabling.  When we mated up the lowest stage of the ESD cable, we had a small hiccup.  One of the 5 pin receptacles had fallen into the connector back shell on the end that is soldered directly to the CP.  With some care, we were able to gently fish it back out and push it into place with the wire which had been tugging on the other end of the pin receptacle.  We expanded the receptacle such that it seemed to hold itself in place better.  As well, all 5 receptacle "houses" were twisted such that they seemed to seat better in the connector.  We then connected this female connector to it's upper male cable counterpart and it "seemed" like it the connection seated properly.  We have no way of visually knowing though.  WE NEED TO CHECK THIS AT THE FEEDTHRU, OR SOMETHING.

[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.
 

Betsy, Travis, Danny, Margot

Today, we finished deinstalling the ITMx lower section of the QUAD using the install arm and elevator.  All went as it was supposed to.  After transfering the load to the manlift and attaching the LSAT structure for support, we set it down onto one of the LSAT trollies we have.  We then separated the Main and Reaction chains.  Margot and Danny FirstContacted the CP front and back surfaces (spray for back, paint brush for front due to bump stop locations).

While FC work was going, Travis and I went into BSC1 and started prepping the ITMy for deinstallation.  By the end of the day (and some final muscle from Danny) we had the masses locked in positions which facilitate upper and lower segment separation, the cross braces and sleeve structures removed.  (Of course, see yesterdays alog for exact details of how this really happens with floor panels removed, etc.)  We also finished pulling the balance of the witness plates and witness optics in BSC1 and BSC2.

Note, when we removed the flooring in both BSC3 and BSC1 we found hidden treasures.  To be continued... 

:)

(Betsy, Travis, Danny, Margot)

Today we (undid some work! - ha):

- Swung the ACB back with it's swing-away hardware

- Put a TFE cap on the TCS steering mirror right in the line of foot-traffic and floor removal for protection

- Removed the stiffening braces and wedges (and ~40 fasteners) from the ITMx QUAD

- Removed 3 of the floor panels and removed the sleeve stiffening structure from the QUAD

- Started disconnection of all top stage OSEMs and cabling to lower stage OSEMs on QUAD

- Staged the QUAD hanger hardware and elevator adapter parts

- Richard swapped out my dead backup PS for the elevator - thx, RM for promptness

- Collected the witness plates/samples from BSC 1 and cleaned flooring there