Detector characterization of geo600
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Detector Characterization of GEO600. 4th Edoardo Amaldi Conference On Gravitational Waves UWA - Perth, Australia Karsten Kötter - 2001-07-10. Detector Characterization (1). First P hase: Improve Detector Performance identify noise sources track down transients

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Detector Characterization of GEO600

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Detector characterization of geo600

Detector Characterization of GEO600

4th Edoardo Amaldi ConferenceOn Gravitational Waves

UWA - Perth, Australia

Karsten Kötter - 2001-07-10

Karsten Kötter


Detector characterization 1

Detector Characterization (1)

  • First Phase:Improve Detector Performance

    • identify noise sources

    • track down transients

  • Detector is a large and complex device

    • data from many sensors have to be monitored (and recorded) at the same time

      • detector data

      • environmental data

Karsten Kötter


Detector characterization 2

Detector Characterization (2)

  • Second Phase:create vetoes for h-channel

    • external influences make data from h-channel invalid

    • periods of invalid data have to be marked

      • understand noise propagation in detector

      • determine thresholds in environmental disturbances that affect h-channel

Karsten Kötter


Available channels

Available channels

Karsten Kötter


Environmental channels 1

environmental channels (1)

  • already available sensors

    • magnetic field

    • seismic motion

      • foundation

      • suspension system

    • power line

    • indoor/outdoor temperature

    • acoustics (air/tanks)

    • wind speed/direction

Karsten Kötter


Environmental channels 2

environmental channels (2)

  • planned

    • air pressure

    • vacuum pressure

    • electric field

Karsten Kötter


Detector channels

detector channels

  • Mode Cleaner

    • PDH error point

    • visibility (reflected light)

    • auto-alignment

      • rotation

      • tilt

    • mirror positions

Karsten Kötter


Seismic noise spectrum

seismic noise spectrum

Karsten Kötter


Transient seismic motion

transient – seismic motion

Karsten Kötter


Transient modecleaner control

transient - ModeCleaner control

Karsten Kötter


Coherence seismic motion

coherence: seismic motion

Karsten Kötter


Transient magnetic field

transient - magnetic field

Karsten Kötter


Detector signals during lightning

Detector signals during lightning

Karsten Kötter


Coherence mag field gradient

coherence: mag. field gradient

Karsten Kötter


Temperature fluctuations

temperature fluctuations

Karsten Kötter


Summary

Summary

  • Detector characterization

    • detector improvement

    • h-channel vetoing

  • DAQ system

  • signals

    • detector

    • environment

  • measurements

    • seismic noise

    • magnetic field

    • temperature correlation

Karsten Kötter


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