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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

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

summary
Summary
  • Detector characterization
    • detector improvement
    • h-channel vetoing
  • DAQ system
  • signals
    • detector
    • environment
  • measurements
    • seismic noise
    • magnetic field
    • temperature correlation

Karsten Kötter