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Harald Lück. GEO Status (Update). ILIAS WG1 meeting, Sep. 2004, Hannover/Ruthe. interferometer with dual recycling. mode cleaner. 12W laser. output mode cleaner. detector. Installation Status. attenuated to 2W. MPR ~1% Transmission. Sensitivity changes between WG1 meetings.
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Harald Lück GEO Status (Update) ILIAS WG1 meeting, Sep. 2004, Hannover/Ruthe
interferometer with dual recycling mode cleaner 12W laser output mode cleaner detector Installation Status attenuated to 2W MPR ~1% Transmission
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
Output MC not installed (yet?) Output optics / vacuum tank high-power diode - TCOc
central building / control room W/O output optics Stomp in Ctrl. room
Laser amplitude noise & stab. Red = Inner and outer loop running Blue = only inner loop running Green = both loops off
ROC- Correction of MFe 71W Optimal Compensation Contrast enhanced
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
Central Building new office container 6 desks, common area toillets
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