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Reports until 18:07, Tuesday 21 January 2025
H1 AOS
robert.schofield@LIGO.ORG - posted 18:07, Tuesday 21 January 2025 (82396)
CP beamspot still on ballast mass baffle at high CPy pitch, second beam spot found

Following up on log  82252,  I made movies of HAM3 from the PR2 camera viewport last Thursday as I moved CPy over its pitch range and then, at nearly maximum pitch up, I ran it over its yaw range. In the movie (https://youtu.be/0f0F7cWqpwQ ), the beam spot appears to stay on the ballast baffle. At this highest pitch there appears to be a second spot on the support structure of the baffle. This second spot would be a little lower at the nominal setting. A steeply angled baffle that stuck down a little below the edge of the table might mitigate both of these stray beams.

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