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The Auto a lignment S ystem of GEO 600

The Auto a lignment S ystem of GEO 600. Hartmut Grote and the GEO 600 team Max-Planck Institute for Gravitational Physics Amaldi , Perth 12-07-2001. Autoalignment - P urposes. Superimpose cavity axes with incoming bea m - Differential wavefront sensing (analog feedback for 14 DOF)

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The Auto a lignment S ystem of GEO 600

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  1. The Autoalignment System of GEO 600 Hartmut Grote and the GEO 600 team Max-Planck Institute for Gravitational Physics Amaldi, Perth 12-07-2001

  2. Autoalignment - Purposes Superimpose cavity axes with incoming beam-Differential wavefront sensing (analog feedback for 14 DOF) Center beam spot positions on mirrors-Spot position sensing (digital feedback for 20 DOF)

  3. Autoalignment Experimental setup for 1 cavity

  4. Autoalignment Experimental setup for 1 cavity

  5. Autoalignment Experimental setup for 1 cavity

  6. Autoalignment Experimental setup for 1 cavity Differential wavefront sensing Sensitivity typ. 10 p rad / sqrt(Hz) Orthogonalization < 1/10 Bandwith 0.2 or 6 Hz

  7. Autoalignment Experimental setup for 1 cavity Local beam centering servos Bandwith ~ 1kHz

  8. Autoalignment Experimental setup for 1 cavity Spot position control

  9. Autoalignment - Switching On and Off

  10. Modecleaner Alignment Drift Over 1 Day

  11. Modecleaner Alignment Drift Over 1 Day

  12. Modecleaner Alignment Drift Over 1 Day

  13. Autoalignment setup PR + MI cavity

  14. PR Mirror Rotation Autoalignment Errorsignal

  15. PR Mirror Rotation Autoalignment Errorsignal

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