ILIAS WG1 meeting Han/Ruthe Harald Lück ILIAS WG1 meeting, Sep. 2004, Hannover/Ruthe GEO Status (Update)

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Presentation transcript:

ILIAS WG1 meeting Han/Ruthe Harald Lück ILIAS WG1 meeting, Sep. 2004, Hannover/Ruthe GEO Status (Update)

ILIAS WG1 meeting Han/Ruthe Installation Status 12W laser mode cleaner interferometer with dual recycling output mode cleaner detector attenuated to 2W MPR ~1% Transmissio n

ILIAS WG1 meeting Han/Ruthe Sensitivity changes between WG1 meetings

ILIAS WG1 meeting Han/Ruthe Changes since last meeting installation of suspended output optics HPD in separate vacuum vessel new sensor (HPD) for MI length control 2f local oscillator (optional) new gain distribution in MI length control

ILIAS WG1 meeting Han/Ruthe Output optics / vacuum tank high-power diode - TCOc Output MC not installed (yet?)

ILIAS WG1 meeting Han/Ruthe central building / control room W/O output optics Stomp in Ctrl. room

ILIAS WG1 meeting Han/Ruthe Noise Projections: the analytical way

ILIAS WG1 meeting Han/Ruthe Changing MID loop electronics

ILIAS WG1 meeting Han/Ruthe Changing SR loop – UG ~35Hz

ILIAS WG1 meeting Han/Ruthe ‘2f LO’ for MID Demodulation

ILIAS WG1 meeting Han/Ruthe Laser amplitude noise & stab. Red = Inner and outer loop running Blue = only inner loop running Green = both loops off

ILIAS WG1 meeting Han/Ruthe Variation of SR Modulation Index

ILIAS WG1 meeting Han/Ruthe Effect of changing the heater power

ILIAS WG1 meeting Han/Ruthe ROC- Correction of MFe 71W Optimal Compensation Contrast enhanced

ILIAS WG1 meeting Han/Ruthe Sensitivity for changing ROC of MFE

ILIAS WG1 meeting Han/Ruthe GEO600 next steps repairing leak in central building Set up new office container improve sensitivity towards S4 increase injected power increase power recycling factor lock acquisition might cause problems simulations and testing needed, maybe OMC required

ILIAS WG1 meeting Han/Ruthe construction work

ILIAS WG1 meeting Han/Ruthe Central Building new office container 6 desks, common area toillets

ILIAS WG1 meeting Han/Ruthe GEO600 next steps repairing leak in central building (almost done) Set up new office container improve sensitivity towards S4 increase injected power implement segmented heater increase power recycling factor (300 -> 2000) lock acquisition might cause problems simulations and testing needed, maybe OMC required