I have built overview MEDM screens showing the EPICS monitor of all PEM fast channels. To add these for CS, EX and EY to the sitemap I had to give PEM two related pull downs. All weather screens are in the right pull down, dust and others in the left.

Currently the BLRMS signals are missing because they have different name suffixes, I'm in the process of adding them.

- 9:00 am, Apollo to LVEA, prep for beer garden transformation.
- 9:15 am, David to LVEA, check on TCS cable short.---> done by 10:05 am.
- 9:30 am, Aaron to LVEA, cable run for photodiode amplifier.
- 9:41 am, Betsy and Travis to Y-End, SUS hardware retrieval.
- 10:14 am, Pablo to LVEA, hunt for a spare VCO.
- 11:30 am, Robert and guests to LVEA beer garden, installation of microphone.
- 1:00 pm, Kyle to Y-arm, open gate valves, not GV18.
- 1:10 pm, Karen to Y-End, cleaning.
- 1:10 pm, Corey and Cyrus to YBM, gigE camera testing.---> done by 1:35 pm.
- 2:00 pm, Apollo crew to LVEA, setup to move items around beer garden, remove stairs, support platforms, etc.
- 2:54 pm, Sheila and Justin to H1PSL laser enclosure, block ALS path for change of shutter.
- 3:15 pm, Joe and Gerardo to LVEA, remove and replace ALS path shutter.
- 3:24 pm, David and Greg to LVEA, TCS plumbing work.
- 3:49 pm, LVEA transitioning to laser safe.

2 days of RGA accumulation data for Y2 Beam Tube.

Files attached are;

Y2accum.txt - time vs ion current

04102014_y2_accumulation.txt - as written by RGA software.

Y2accumCC.txt - Cold cathode PT246

Termperature data yet to come but it has been 80F in the afternoons lately.

The volume under test includes CP4 and CP7 at either end of the two kilometers. GV 18 and GV11 were hard closed for the duration.

Preparations for opening the Corner Station to the Y-end for a few hours tomorrow 

Note: Indicated IP11 alarm is the result of incorrect signal conversion values to CDS -> Actual voltages and currents are nominal for pressure conditions 

(Filiberto, Aaron, Thomas, Daniel)

We installed the baffle PD amplifiers for ITMY. This is a new double chassis, so we replaced the old single unit. This should also fix channel 4 for the ITMX diodes. Previously, channel 4 was connected to channel 3, but now is back on channel 4. The TwinCAT system has been reconfigured to recognize the new channels.

I switched from fan 1 to fan 2 at Y end
Fan 2 on at 11:39
Fan 1 off at 11:40
Fan 2 set to 12K flow 

ITMX has tripped twice this morning, no known cause for the first trip, the second one we caused.

Dave H, Alastair, Thomas, Greg

Quick summary of progress:

TCSX:
Laser was operated for a few hours on Monday with an output power of ~58.5W. Optics have been mounted and placed in position on the table. This table is now ready for alignment.

TCSY:
Optics/mounts have been staged, and are ready for table installation. Cabling is almost complete. Attempts were made on Wednesday to operate the laser/test the output power, however this was unable to be performed due to a fault with the paddlewheel flow meter (amongst other interlock/laser controller issues that are still to be tracked down). Some additional cabling is still to be installed. 

TCSX/Y periscopes have been partially assembled, still to track down one last component. Socket head cap screws with lower profile heads have been ordered, as it was observed that the cap screws for the periscope base sit proud. 

Power watchdog trip, Gerardo is making plots to investigate.

Threshold raised

model restarts logged for Wed 09/Apr/2014
2014_04_09 07:27 h1fw1
2014_04_09 12:17 h1hpiham4
2014_04_09 12:17 h1hpiham5
2014_04_09 12:17 h1iopseih45
2014_04_09 12:17 h1isiham4
2014_04_09 12:17 h1isiham5

h1fw1 unexpected, all others due to power down of h1seih45.

No touching, please.

This is to remind me (and anyone else who is involved) that we need to modify the BSC-ISI control diagram to allow all 6 degrees of freedom of stage 1 to stage 2 sensor correction

Yesterday,
Scotty and I were able to populate the 400+ 1/4-20 hardware into the stage 2 closeout plate cover, as well as attach the back and side ribs. 

Today,
I made a cable kit for 3IFO BSC unit 2. Unit 3 will need 4 cables tested before it is a complete kit. All bolts connecting the closeout plate and closeout plate cover were torqued to spec. Locker sub-assemblies have begun. General cleanup and shelf organization is also ongoing.

9am Justin HAM2 area working on laser barriers

9:15 DaveH & Alastair to LVEA for TCS work

9:30 Hugh HAM4 HEPI work

9:30 Fil & Aaron to EY for camera install

10:30 Bubba to EX

10:30 Ark Roofing on site

10:45 Corey to LVEA looking for cameras

12:00 Fil & JimB powering down HAM4/5 rack for fix BIO cabling

I didn't hear from anyone after lunch, so I'm assuming all work stopped about then.

(Alexa, Pablo)

We examined the noise spectrum of REFL_DC_BIAS in several configurations. The first was in the nominal setting. We then placed an ND filter along the PSL reference path on ISCT1 after the shutter. Finally, we placed the ND filter along the x-arm green transmission path (before ALS-BS5). We saw that the beatnote signal appropraitely decreased by 3dBm (or Sqrt(2) in amplitude) with the ND filters placed. This signal was taken from the RF MON readback; I confirmed that this was consistent with an RF anaylyzer after the RF pre-amp.The 1/f noise changed by the same amount regardless of which path the ND filter was placed in. Surprisingly, the noise increased by a factor of 4. One would imagine only an increase by sqrt(2). This increase is also higher compared to what we saw when we did this measurement yesterday (alog 11221).

While on the table, I noticed that there is clipping in the PSL reference path. The beam is clipped at the bottom of the PBS. I have not done anything to fix this clipping yet. This will affect our mode matching and our noise.

We Left ETMX running over night (it wasn't very windy so this should probably count as a quite time, I need to make a tool that will tell me that kind of thing).

Sensor correction was installed in three degrees of freedom last night and running. This is ground to stage 1, using Ryan's filter which is targeting the first suspension mode at 0.45Hz.

I've attached three sensor correction plots on/off, blue is sensor correction off the other colors are sensor correction on with various gains. The X direction gain ended up at 1 (which is what it was designed to be) Y and Z came out to be 0.6,
which is very weird.

  There are also three performance plots from last night, with the GS13 and T240 curves.  In general we are buried in the GS13 noise above 0.5Hz (red vs green) except at the BSC pier resonance, we do not have the HEPI L4C feed forward filters installed yet. GS13 rY and rX tilt coupling (yellow line) explains most of the low frequency gs13 signal.  There is clearly some room to relax rZ loop to reduce the gain peaking below 0.2Hz

and again none of this is Stephen's fault I can't figure out how to change the login to me

Rich 

Mabey I hope that I now have the correct plots