Terra, Evan H, Jeff B, Sheila
Tonight we were able to lock at 50 Watts with a decent recycling gain, but didn't get much past powering up.
-
Terra aligned the POP GigE camera.
-
We had no problems with DHARD tonight, it is back at the nominal gains of 30 for pitch and 40 for yaw durring power up (this is in guardian).
-
We can improve the recycling gain to about 30 (according to POP/IM4) at 50 watts using the POP A offsets that worked before the vent: 0.5 in POP_A_PIT and 0.4 in POP A yaw. We found that putting these offsets in moved the beamsplitter and decreased the sideband build ups as we saw before the vent. By adding an offset of 1300 to ASC_MICH_P and 500 to ASC-MICH_Y we were able to recover the sideband build ups.
-
We lost lock due to the CSOFT instability when the coil drivers state turned off the ISS 3rd loop to prepare for turning on the second loop. The easist way around this may be to use the new electronics.
-
DRMI ASC has been difficult, and I have had to hand adjust alignments and turn on loops by hand every lock. The alignment is bad after every lockloss, which could be due to some heating. I commented out PRC1, SRC1, and SRC2 from the guardian, this worked once after hand tweaking in PRMI.