LIGO Document T1200385-v2

LLO BS Prism Gluing Issue and Resolution

Document #:
Document type:
T - Technical notes
Other Versions:
17 Aug 2012, 08:55
When the LLO BS was hung, it had a large pitch offset, possibly due to prisms glued in the wrong position. This document describes the efforts to understand the problem and the eventual decision to correct it using trim mass at the IM.
Files in Document:
Other Files:
SUS LLO BSFM BS prism gluing
Notes and Changes:
Added plot from model to show that pitch mode appearing in the vertical TF (as observed at LLO) is expected.

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