LIGO Document T1400587-v1

Augmenting the quad MATLAB model with fiber violin modes

Document #:
LIGO-T1400587-v1
Document type:
T - Technical notes
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Abstract:
This note describes the steps taken to add the violin modes of the fused silica fibers to the quad suspension model. This model is on the svn at
.../SusSVN/sus/trunk/QUAD/Common/
MatlabTools/QuadModel_Production/
makequad_with_modal_fibers.m

The fiber is modeled in a modal fashion so that each mode has an accurate frequency and shape, and only requires a single degree of freedom in the model.

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