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.

The EndY HEPI Pump Station servo controller had failed and we were running the Pump Station on just local control with no servo on the output pressure.  The servo is now running and servoing the Pump Station output pressure to 80psi.

Both pslws2 and pslws3 computers were nearly non-responsive, so I rebooted them.  

I forgot to write more detail about the fiber swap I did inside the MSR Beckhoff communications chassis tuesday and why I did this. LHO CDS has a standard concerning the fiber connection to the single mode patch panels running between the MSR and the outbuildings. For each fiber pair, in the MSR the left fiber is the transmit (going from MSR to outbuilding) and the right is the receive (outbuilding to MSR). At the outbuildings this is of course reversed, the left connector of the pair is the receive from the MSR, the right is transmit to the MSR. Ethernet switches use LC/LC SFPs, which has standardized on the left is the transmit. So in the MSR left on the SFP goes to left on the patch panel. I modified the Beckhoff chassis to this standard, which required switching the internal SC single mode connectors on both the Y-arm and X-arm fiber units.

Corey, Sheila

Corey and I went out to End Y, Corey was checking the position of the IR beam on the middle panel of the ALS table and I was trying to align the camera for the green reflected beam.  
When we got there the qpd matrices were all zeros, after Chris did a burt restore of h1iscey to March 16th we could see that there was light on qpd A but not B.  Vincent adjusted the isi alignment for us, and then I changed the offsets on PZT1  from 100 on both Pit and Yaw to 10000 in PIT and  6000 in YAW.  We were then able to use the servos to center the beam on the QPDs.  

Corey marked his spot, and I roughly aligned the camera although there is no power to it, so we will probably need to adjust it once its powered up.  

I created a safe.snap file for h1iscey for this state, with the PZT servos off.  

So far this week, Gerardo and Danny have successfully bonded an ear to the S3 side of each of the LLO ETM optics, namely ETM07 and ETM09.  They are flipping the masses today to start the other sides.

Mark B and Travis.

Travis installed the top level OSEMs and retracted them fully. The OL values with gains and offsets are:

prettyOSEMgains(logOLs('X1','QUAD'),'QUAD')

M0F1 -25790     -1.163 12895
M0F2 -29266     -1.025 14633
M0F3 -30618     -0.980 15309
M0LF -24822     -1.209 12411
M0RT -25030     -1.199 12515
M0SD -21983     -1.365 10992
R0F1 -28836     -1.040 14418
R0F2 -22844     -1.313 11422
R0F3 -25991     -1.154 12996
R0LF -26764     -1.121 13382
R0RT -24718     -1.214 12359
R0SD -22399     -1.339 11200

To get this to work I had to add X1 support to both the Matlab functions.