Alexa, Keita, Gabrielle, Dan, Sheila

The bottom line: X arm is locked on green, we are having trouble finding the beam on ITMY and it might be helpfull to have a camera on ITMY tomorow. 

Both PLLs are now working.  Both beatnotes needed to be realinged.  I reduced the power on the end Y BBPD, and realinged the laser green power monitor diode which was totally off. 

We spent some time searching for the green beam on the ITMY baffle PDs, but didn't find the real beam, I think. 

There is a beam which doesn't seem to have enough power, which can be found on PD1 at 2.2PIT, 7.3 YAW (20dB gain setting we get 3.6 Volts)  PD4 at -97.8 PIT 74 YAW (3.6 Volts, 20dB setting) When aligned to the center of these points, there is no beam arriving on ISCT1, and we could not find any return beam on the ETM baffle PDs even after a long search.  The ETM baffle PDs are working, since they clearly see the IR when PRMI flashes.  I have left  slow excitations on TMSY pitch and YAW hopping that at some point we will see light on the ITMY baffle PDs. 

Other things today:

Keita and I briefly tried to move the bem spot on PR2, using the output matrix he described here :  alog 13939

To do this we coped the gains from the opticalign filter banks into cal filters for pitch and yaw of iM4, PRM, PR2, and PR3.  However, when I briefly tried moving the spot around I misaligned the cavity. 

Gabrielle and I also tried locking DRMI using the configuration Kiwamu described from last night.  We were able to see any lock longer than a few seconds. 

PRMI however seems to be locking consistenly within a minute.