LIGO Document E1400311-v2

ECR for beam centering servo for green WFS

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Document type:
E - Engineering documents
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Implement beam centering servos for green wave front sensors in the end stations.
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Notes and Changes:
This ECR was not approved.
Testing in H1 approved using borrowed 3rd IFO hardware (Mad City Labs PZT mirrors and controllers). ECR pending results of testing. No plans to install ALS WFS on L1. Experiment closed. No permanent (ECR) change.

See FRS issue/ECR tracker entry:

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