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Mon Apr 25 22:38:49 2011
prepration for DRMI : Y arm flashing
This week is going to be a recycled Michelson week.
As a preparation I did several things today :
1. Alignment of the Y arm
2. Alignment of PRM
3. Checking of all the pick-off ports
(Y arm alignment)
The idea to have the Y arm aligned is that : once we lock the Y arm we will be able to align the input PZTs using the Y arm as a reference.
I tried aligning the Y arm and successfully made the Y arm flashing with IR. I can see it flashing on ITMY camera but no flashing on ETMY camera.
PRM has been intentionally misaligned for the single arm green locking test.
I just confirmed that we can bring PRM back to a good alignment. Now we can see the central part is flashing too.
I went checking through all the picked off beams to see if they are available or not.
POX : lost
POY : fine
POP : very clipped
POSRM : fine