max-planck-institut fÜr gravitationsphysik albert-einstein-institut 2001-07-10karsten kötter1...
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![Page 1: MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK ALBERT-EINSTEIN-INSTITUT 2001-07-10Karsten Kötter1 Detector Characterization of GEO600 4th Edoardo Amaldi Conference](https://reader036.vdocuments.mx/reader036/viewer/2022070308/551bea99550346c3588b628c/html5/thumbnails/1.jpg)
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIKALBERT-EINSTEIN-INSTITUT
2001-07-10 Karsten Kötter 1
Detector Characterization of GEO600
4th Edoardo Amaldi ConferenceOn Gravitational Waves
UWA - Perth, Australia
Karsten Kötter - 2001-07-10
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2001-07-10 Karsten Kötter 2
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
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
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2001-07-10 Karsten Kötter 3
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
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
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2001-07-10 Karsten Kötter 4
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
Available channels
C e ntra l Sta tio n:32 c ha nne ls a t 16384Hz SR64 c ha nne ls a t 512Hz SRc a . 800 c ha nne ls a t ~ 5Hz (c o ntro l syste m )
No rth End Sta tio n:16 c ha nne ls a t 16384Hz SR
Ea st End Sta tio n:16 c ha nne ls a t 16384Hz SR
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2001-07-10 Karsten Kötter 5
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
environmental channels (1)
•already available sensors• magnetic field• seismic motion
• foundation• suspension system
• power line• indoor/outdoor temperature• acoustics (air/tanks)• wind speed/direction
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2001-07-10 Karsten Kötter 6
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
environmental channels (2)
•planned• air pressure• vacuum pressure• electric field
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2001-07-10 Karsten Kötter 7
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
detector channels
•Mode Cleaner• PDH error point• visibility (reflected light)• auto-alignment
• rotation• tilt
• mirror positions
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2001-07-10 Karsten Kötter 8
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
seismic noise spectrum
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2001-07-10 Karsten Kötter 9
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
transient – seismic motion
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2001-07-10 Karsten Kötter 10
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
transient - ModeCleaner control
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2001-07-10 Karsten Kötter 11
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
coherence: seismic motion
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2001-07-10 Karsten Kötter 12
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
transient - magnetic field
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2001-07-10 Karsten Kötter 13
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
Detector signals during lightning
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2001-07-10 Karsten Kötter 14
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
coherence: mag. field gradient
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2001-07-10 Karsten Kötter 15
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
temperature fluctuations
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2001-07-10 Karsten Kötter 16
MAX-PLANCK-INSTITUT FÜR GRAVITATIONSPHYSIK - ALBERT-EINSTEIN-INSTITUT
Summary
• Detector characterization• detector improvement• h-channel vetoing
• DAQ system
• signals• detector• environment
• measurements• seismic noise• magnetic field• temperature correlation