The cabling and fiber converters were installed and verified to work today so we can get views of the Trans and Refl beams on the IO table.
The switch has been set to so these signals on the from CRT monitors and two of the LCD monitors by the operator station.

Terminated the input to the AA chassis on the first 3 channels all associated with the Tilt meters.  This is to facilitate some noise measurements by Keith Riles.  The Tilt meters were unplugged so no data will be lost.

I left the ALS pll running overnight and this morning, using a 20 hour strip tool with a 1 second sample time it looks like the loop dropped lock 3 times, once for less than a second so that the autolocker did not respond, and the other two times the auotlocker had it relocked with the full gain after 62 seconds and 33 seconds.  Most of the time not in the locked at full gain is spent ramping the gain up from the acquire gain to the locked gain, we could speed up the ramp if this is too slow.  

It was locked according to the locked bit 99.97% of the time, and locked in the full gain state 99.86% of the time.  

I set the limits fairly loosly, to try to make sure the locking conditions were met overnight, and there were no times when the locking conditions were not met. 

I also recorded the fiber launch power, fiber trans, and fiber transmitted power in the right polarization overnight.  There was about a 30% drift in the amount of power in the right polarization overnight, most of the drift does not seem to be due to a shift in polarization but in the transmission of the fiber itself.  A plot of the values I monitored overnight is attached, each one of these is normalized to its mean so that we can compare the trends.  

The gnuplot package has been added to the Ubuntu 12.04 workstations in the control room.  It is also available on Ubuntu 10.04 and 11.04 workstations.

h1fw0 goes into period of instability, restarted every two hours or so. We are investigating the problem. Provided h1fw1 continues to be stable, no data is lost.

Attached are plots of dust counts requested from 5 PM May 22 to 5 PM May 23.

The ezcademod program has been replaced with a new copy to temporarily fix a problem that prevented it from reading a complete channel list.  

Starting another set of M0/R0 TFs on ETMx, this time with the new M0F1 OSEM and with damped TFs as well.

(Sheila, Chris)

Recently the input alignment to the IMC was disturbed slightly by a test of the PZT on the PSL periscope.  After the test, the PZT was returned to its original state (unplugged), but it did not come back exactly to its original position.  This misalignment was interfering with our efforts to lock and align the mode cleaner, so Sheila consulted with Rick and Michael, and we got permission to enter the PSL enclosure and reconnect the PZT.

We did exactly that, and then went to IOT2L to search for the MC reflected beam.  However, the beam seems to be missing the table altogether, so we were not able to recover the alignment as easily as we hoped.  We gave up for tonight, left the PZT plugged in and closed the PSL shutter.  Tomorrow we'll have to start by recovering the alignment coarsely (e.g. by using a viewport reflected spot as a reference).

The Y end PLL autolocker is working now.  

The loop has been locked for about 3 and a half hours now, with 
In 1 gain -4, fast gain -10, common comp and fast option enabled
the slow ugf is 0.035 Hz and there is no zero used in the slow servo 

I will leave this running overnight

I have added directories for autoburt for the ethercat machines, as Dave and Daneil discussed a while ago we are going to treat each PLC as its own front end, so there is an autoBurt.req file for each PLC

I made directories
/opt/rtcds/lho/h1/target/h1ecatey/h1ecateyplc1epics  ect for each plc.  There is an autoBurt.req file in each of these directories, except for h1ecatc1plc1 where we are running a reduced number of channels.  These files I copied over from the beckhoff machines using WinSCP. They will not be updated automatically so if anyone makes changes to the epics database and they will also need to copy over the autoBurt.req file if they want their channels in the autoBurt

there is a safe.snap file for the h1ecateyplc2 that has all the parameters for the autolocker, however this will not be automatically restored yet, so we have to manually restore it each time we start the PLC.  

Documentation coming soon for the autolocking library...

I disabled the HAM 2 suspensions before Filiberto disconnected, rerouted and reconnected their cables. I forgot MC2 is not in HAM 2 and set one of its watchdog high limits to 0. I reset it.
Jim restarted cdsfs0, /ligo was read only.
Sheila and Corey worked at end Y aligning the green beam. Vincent yawed HEPI at end Y to assist with the alignment. Sheila installed a camera and Corey marked the IR spot on the ALS table enclosure.
Hugh went to end Y and restarted the HEPI pump station servo controller.
h1fw0 periodically crashed and restarted.
PCAL work was done in the H2 PSL laser enclosure.
John took contractors on a tour of the LVEA.
Apollo removed the gate valve spool at end X.
Corey escorted Mitchel into the Laser Hazard area near HAM 2 to read serial numbers off of the HEPI hardware.

ETMY R0 damped transfer functions will be running for 4 hours starting at midnight.

After Betsy and Travis aligned the ETMx (6423) but before they swapped out the M0F1 OSEM (6448ff), I took TFs on M0 and R0. Because the quad test stand had not been fired up in some time it took a lot of wrestling with the screens, settings and scripts (6443). Eventually I got the following undamped TFs:

^/trunk/QUAD/X1/ETMX/SAGM0/Data/2013-05-22-1053284303_X1SUSETMX_M0_0p01to50Hz_tf.mat

^/trunk/QUAD/X1/ETMX/SAGR0/Data/2013-05-22-1053300495_X1SUSETMX_R0_0p01to50Hz_tf.mat

The M0 data has a dropout at low frequency in L, but fortunately it doesn't obscure any of the peaks. The agreement with the model was excellent in all DOFs except that initially the pitch frequencies did not line up. Then Betsy reminded me that one of the retrofits applied since this suspension was last tested (2117) was to suspend the metal PUM on the same wire loop that will be used for the glass build. That amounts to changing the effective d2 from 10 mm to 0.3 mm. I created a new model (tag: wireloop, parameter file: quadopt_wireloop.m) with this change, and the pitch frequencies came into good agreement. This can be seen on p5 of the first attachment, where the old model coincided with the orange curve from the previous build but the new model (blue) agrees with the current build (black). This new model should be used for all metal builds with wire loops in future.

Similarly the R0 data is good and agrees with the model in all DOFs except pitch. However this is presumably just the usual cabling effect - the previous and current builds are the same.

No mechanical adjustments appear necessary to either chain - I'll get damped TFs and spectra soon.

We removed the spool at E X and sealed it with C P stat and hard covers in preperation for transport to M X for temporary storage.

MichaelR, RickS, VolkerQ

After realigning the auxiliary beam hitting IO_AB_PD1 on the PSL table we found that there was a strong 800 kHz amplitude modulation on the light transmitted through the PMC. It was a strong modulation with about 20% of the total power oscillating with a nice ~800kHz sinewave.  The ISS was not happy and would not stay locked.

Fix: Switch noise-eater off and on. This resolved the AM issue.

But even after that the ISS would not engage.  The voltage on ISS PD A and PD B was ~ 6V and we increased it to 10V. This made the autolock

work again, but IO_AB_PD1 again showed a strong AM modulation. This time at ~80 kHz.  We reduced the gain of the ISS from 9.2dB to 8dB and now the ISS appears to be happy again.  No obvious oscillations on  IO_AB_PD1 are observable.

Betsy reported that the ITMx ETMx assembly team in the staging building were near the point of needing the X1 quad test stand but that it had lost its settings, so I took a look. It turned out that there was no safe.snap file in /opt/rtcds/tst/x1/target/x1susquad/x1susquadepics/burt , so I created a symlink to /opt/rtcds/userapps/trunk/sus/x1/burtfiles/x1susquad_safe.snap which existed from 11/18/11. It also turned out that /opt/rtcds/tst/x1/userapps/release/cds/x1/medm/X1SITEMAP.adl , was pointing to .../userapps/release/sus/common/medm/quad/SUS_CUST_QUAD_OVERVIEW.adl , which was way too new, so I redirected it to .../userapps/release/sus/x1/medm/quad/SUS_CUST_QUAD_OVERVIEW.adl/SUS_CUST_QUAD_OVERVIEW.adl . The preferred commands for getting the sitemap are now sitemap1 for the quad (login as controls) and sitemap2 for the triple (login as controls3).