BOSEM mounting plate was tapped dry by Jim and it's working great.

All TMS SUS cables were connected.

• TMS BOSEM cables (D1000234) were connected to the BOSEMs.
  • One cable was connected to F1, F2, F3 and left OSEM, another one was to right and side (in this order). No S/N visible on the cable connector.
• We borrowed two D1000225 cables from Justin, and used these to connect the OSEM cables to the 25 pin male-male dummy feed through.
• Clean cable routing is not excellent but there's no need to do it super nicely at this stage.
• On the dirty side of the dummy feed through, two female-female were used to connect dirty cables that have male connectors.
• These dirty cables are connected to the feed through on the ceiling of the lab, and to the rack outside.
• I have no idea which of the dirty cables are supposed to be which, so there's a 50% chance that F1-F2-F3-LEFT is connected to what is supposed to be RIGHT-SIDE cable. You'll find out soon.

All BOSEM were reasonably centered but height was not adjusted because the MEDM was not working on cdsimac2.

Not all safety structures were installed, but the one that matters (safety wire) was. There was some problem that was fixed by bending wire (another alog).

I'll be on vacation next week, but basically everything is there for SUS test. Corey/Cheryl/Deepak need to do the following:

1. Make MEDM work. Ask Dave.
2. Remove all wipes on the table that are protecting mirrors. Some wipes are touching the SUS wire. Otherwise everything should be floating freely.
3. Open TMSX MEDM and look at the raw count of the BOSEMS. Adjust the height of BOSEMs by turning two PEEK nuts. You need to shoot for the mid  point between open and closed. 
4. There's 50% chance that (F1 , F2) are swapped with (RIGHT,  SIDE), and no signal from F3 and LEFT. If this is the case, swap the dirty cables.
5. Leave it for about 30 min and take the free swing spectrum.
6. Give it to SUS people. The point is just to see that the damping works and that nothing is touching. 

In parallel, you need to work on assembling the remaining safety structures.

Another ugly work around.

Mounting position of TMS vertical safety wire is shifted by about half an inch from the center of the TMS table. I'm guessing that the mounting hole position for the wire on the safety support beam, type 01 (D1100264) is wrong.

I'm bending the safety wire, as it is more like a thin rod, so that it clears the ring on the TMS tele.

The first picture shows how the safety wire is bent and the safety wire clamp tilted to allow the wire to clear the ring.

The second picture shows that a plumb bob, which is suspended from the center of the safety wire clamp, is pointing almost at the edge of the ring. 

The third picture shows how I held the plumb bob.

I cannot open MEDM sitemap from the dock.

When I click the  terminal  icon in the dock, a terminal window opens immediately but it takes more than 5 minutes before bash prompt is shown.

When finally the bash comes up, a simple ls command takes 3 seconds.

sitemap command from bash tries to launch something, and it takes about a minute or two before "cannot access file: /opt/rtcds/lho/h1/medm/SITEMAP.adl" is displayed.

We tested a new scheme for IMC locking that is based on fast triggering on the IMC transmitted power. This allows discriminating against higher order modes, without lowering the feed-back gain.

Our plan was to
 - acquire with the fast path (frequency feed-back) only
 - immediately engage the slow path (MC2 feed-back) once above the threshold
 - but avoid a large switching transient
 - and put some slow motion on the optic to make sure we see fringes.

All that was achieved by
 - leaving the the slow path to MC2 on, but
 - have an additional 0.3Hz pole in the slow path. this puts some slow motion on MC2.
 - once triggered, this 0.3Hz pole is simply turned off, engaging the full feed-back without a transient.

To implement this we had to make one minor change to the FILTBANK_TRIGGER.mdl library part:
 - our filter needed to be turned OFF on trigger (not the opposite)
 - we thus added an epics input named "_INVERT" (e.g. H1:LSC-MC_FM_TRIG_INVERT) to the library part
 - if "_INVERT" is 0 (the default), the behavior is unchanged from the previous model.
 - if "_INVERT" is ~0, the trigger fires if the input is below threshold.

With this logic the IMC seems to grablock in less than 1 sec, reproducibly.

The changes (both h1lsc and FILTBANK_TRIGGER.mdl were submitted to the svn (revision 5458). 

Work on the OSB roof – Richard
Work on the Optics Lab – Gregory
TMS work at End X – Cheryl/Keita
H2 PSL Enclosure work (local laser hazard ON/OFF) – Colin/Pablo 

I looked into cross talk in the PEM Endevco boards and the Anti-Aliasing boards.  For the Anti-Aliasing boards I directly injected a 5 Hz ramp signal and looked at 10Hz right before saturation. For the Endevco I installed an accelerometer on a shaker at 5 Hz and gradually increased it until just before saturation. The cross talk attenuations in the attached table are at 10 Hz.

After testing a known good channel on it, we determined that channel 3 of AA2 is bad. 

[Stefan, Kiwamu]

  Today Stefan reminded me that the WFS RTS library parts for its DC signal was updated in July 30th (see LLO alog 8061) and we haven't applied it at all in LHO. This update was for fixing the numbering of the four DC segments to match with that of the RF segments. Before appplying this updates, we wanted to make sure that this is the right thing to do. So for the reason we did a brief check on the existing WFSs, namely IMC WFSs on ITO2L. We intentionally misaligned the IMC REFL such that it hits only one of the four segments and did a block-and-unblock power modulation by hand to identify which segment responds. We went through all four segments on both WFS_A and WFS_B. Indeed the DC segments were in a wrong order of {4,3,2,1} while it is {1,2,3,4} in the RF segments. Indeed we need to correct it in the IMC realitme model although we haven't corrected it yet.

 Looking at the l1asc model which uses the updated WFS library, we noticed that the labels of the tags associated with the DC library parts were incorrect. We probably need to talk to poeple in LLO to make sure that the update was done in a proper way.

VBO A is up and running again but the side effect is really high dust counts in the optic lab's vacuum oven room. For now the door to that room is closed, but hopefully the counts will drop soon. The fiberglass heat tape and insulation are the largest culprits.

We've tested a new tripod mounting system for the magnetometers with aims to decrease artifacts from motion of the magnetometer on the tripod. The iLIGO mounting scheme resulted in peaks in the magnetometer spectra that were not from real magnetic fields but from the magnetometer moving in the earth's field at tripod resonances. We tap tested both tripods to study their resonances and damping. The flagpole resonance of the current tripod is at 7.9 Hz. The new system, designed at Cal State Fullerton, is more damped and rigid. 

Attached is the power spectrum of both setups, side to side (see photo). The red trace is the magnetometer mounted on the current tripod, the blue trace is the magnetometer mounted on the Fullerton prototype tripod. The flagpole resonance of current tripod is seen at 7.9 Hz, the one place the blue Fullerton trace does not follow. Most other peaks seen are from nearby cleanroom fans and the expected 60 Hz. 

Terra, Robert

TMS ISC cables were attached to the mass using metal clamp with kapton tubing.

Took longer than we first thought because we had an interference with the screw tip of the clamp and the side of the blade, and had to experiment with shimming. Too thin a shim and your screw protrude more from the back and interfere with the blade. Too thick and your screw doesn't go all the way through the threaded hole of the bracket, and the thickness of the bracket seems to be smaller than 1/8, much thinner than you would  expect from 1/4-20 thread.

Then the cables were attached to the cube rather than the ceiling using peek clamps. This is because we don't have a good tapped hole to mount cable clamps under Bosch frame. Once it is moved to the test end we'd have more options, but in the mean time this should be good.

The top mass was rebalanced, table cloth was readjusted to maximize the clearance (the tolerance is extremely tight), BOSEMs were repositioned but we couldn't proceed as there was a trouble attaching the side BOSEM to the new mounting plate (see another alog).

In parallel with side BOSEM effort, we still need to mount the dummy feed through to the Bosch frame, put the BOSEM cables on, and set the height of the BOSEMs correctly, which looks like half day's work, before we can test the SUS.

Side BOSEM mounting plate that came out of the oven today didn't have tapped holes and we couldn't mount BOSEM on it.

According to https://dcc.ligo.org/d060323 it has four 8-32 tapped holes, looks as if the shop just drilled holes for the tap and then forgot tapping.

Will talk to Bubba and Tylor to see if they can dry tap (we need four such holes per plate). No SUS test today.

Robert reported ADC issues with the PEM model in the corner station. I restarted the h1peml0 and h1iopoaf0 models and he reports the problem has been resolved.

I re-imported the l1asc.mdl to Hanford and compiled it.

Changes:
 - L1->H1 globally
 - l1 to h1 globally
 - LLO to LHO globally
 - replaced the PSL IPC with a simple epics input (temporary, due to missing hardware).

Recompiling and running worked, but revealed a bug in the RTCDS code:
 - the kill script got stuck in the burt safe command. Temporary fix: replace grep h1asc with grep "h1asc "

Next I will start adding the inital alignment stuff for the arms.

Had to restart these to restore communications.

- Works at EY
    Apollo: ask Bubba
    Richard ask him

- Works at EX
    Keita (ISI) getting ready for SUS

- Works at LVEA
    Michael, Hugh: ... some HAM are offset by several mm and that can cause problems with the mode matching ... (talk to them)
    Arnaud TF

- Michael gave a tour to a PNNL group
- PRAXAIR came around 9:30AM, left around 11:40AM
- (14:20) John and a group of contractors went to the roof
- Mark Hankel and the fire department were checking fire extinguishers
- DUST at Bake-Out was very high (15000 for 300nm, 5000 for 500nm) today. Patrick told me that Greg was working inside. John is aware of the situation.