Alignment Control

• Continued progress…

  • Goals:
    • Increase gain to reduce power fluctuations to ~1%
    • Manage angular noise & coupling to strain readout
  • Status:
    • H1: ~few Hz BW for all loops, high power characterization ongoing
    • H2: All loops closed, high power characterization ongoing
    • L1: Recently closed all angular control loops.
  • Recent work:
    • Dynamic input matrix (compensates optical gain fluctuations)
    • Electronics noise reductions
    • More MIMO system => higher bandwidth servos
    • Beam centering …

Notes: