Sheila, Dave Barker

I have made several model changes for squeezing with help from Dave for some debugging. 

The models which have been compiled and checked into the svn are:

omc/common/models/omc.mdl
omc/h1/models/h1omc.mdl
asc/common/models/ASC_MASTER.mdl
asc/h1/h1asc.mdl
sus/h1/models/h1susopo.mdl
sqz/common/models/SQZASC_MASTER.mdl
sqz/common/models/h1sqzwfs.mdl

I also changed sqz/common/SQZ_MASTER.mdl and sqz/h1/models/h1sqz.mdl but have not checked them into the svn because they don't compile.  Dave and I will continue to look at that tomorrow.  

The changes to h1susopo.mdl were just to add IPC receives from sqzwfs for ZM1/2 pit and yaw.  

The changes to the omc models were just to add IPC senders that send the DCPD null and sum to the SQZ_MASTER model.  There are already IPCs sending SUM and NULL to the calibration model, but with normalizations that are not quite the same for sum and null.  I decided to just add new IPCs so that we don't need to worry about settings in the calibration models for the squeezer.  

The changes in the ASC models were similarly just to add IPC sends.  We are now sending AS_C sum to SQZ_MASTER.  This is used for the seed phase locking I added a few months ago, which we haven't used yet. (You can try to lock the phase of the seed beam to generate a stable 1064nm beam out of the OPO, I was thinking this might be useful while we are in chamber trying to scan or lock the OMC, although it wasn't used at LLO.)  The rest of the senders added to ASC are AS QPDs which are added to the SQZWFS input matrix so that we can close some simple alignment loops around the ZMs while we are working on the alignment without the full interferometer.

In the SQZ_MASTER model I added some blrms for the DCPD sum and nullstream, which we can use to make monitors of the squeezing level.  I also added code for a noise lock which can dither the LO loop lock point, demodulate one of our BLRMs, and feedback to the lock point of the LO loop.  There is also the option of demodulating the CLF Q signal, or the DCPD Q signal (or the homodyne 3MHz signal), which was an idea that Lee suggested for setting the LO demod phase.  Right now this has an output matrix which only allows the signal to offset the lock point of the LO loop, but other options could be added. 

Bugs:

Dave helped me to debug a problem in the sqz wfs model.  I had originally not given descriptive names to the input and output ports on the subsystems, using the default in1, in2, ect.  I attempted to rename these to more descriptive things this time, like AS_A_RF42_I_PIT, which was fine in the SQZ_ASC block, but when I tried to do this in the ASC block the RCG gave bogus errors and would not compile. We have left these as non descriptive names. We are currently having trouble compiling h1sqz because the RCG isn't creating automatically generated medms for the new dither lock.