LIGO Document T1000493-v1

Initial Alignment of PR3, ITM, and ETM prior to 1st Light Down the Arms

Document #:
Document type:
T - Technical notes
Other Versions:
This note describes a procedure for aligning the PR3, ITM, and ETM mirrors prior to achieving 1st light down the arms.
Notes and Changes:
THIS IS AN OBSOLETE NOTE. We are exploring other ways to align the optics with the arm cavity baffle in place, e.g. adding an array of 4 photodiodes around the perimeter of the arm cavity baffle. TBD

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