Add RF centering to AS wavefront sensors

Document #:

LIGO-E1500432-v1

Document type:

E - Engineering documents

Abstract:

This is a proposal to allow the RF beam centering of AS WFSs using 2xOmega (e.g. 90MHz) component, in addition to already available DC component.

Files in Document:

Other Files:

• E1500432_AddRFCenteringToASWFS.docm (file is not accessible)

Topics:

• Sensing and Control

Authors:

• Keita Kawabe

Notes and Changes:

Issue tracker: https://services.ligo-wa.caltech.edu/integrationissues/show_bug.cgi?id=1166

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12/4/2015 approved by Peter Fritschel & Dennis Coyne, with the following understanding:
* we plan to try/test at LHO first, then see if useful/needed for LLO
* will require the design of a diplexer and about $12K/IFO in M&S/equipment funds