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  • Brush Fire - LIGO Hanford Observatory

    (No additional info available in detailed archive for this subpage)
    Original URL path: /LIGO_web/brushfire/noaa.html (2015-06-02)



  • LIGO Hanford Observatory Location
    Location of LIGO Hanford Observatory

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/brushfire/loc_lho.html (2015-06-02)
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  • Brush Fire - LIGO Hanford Observatory
    View from Corner Station Roof

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/brushfire/nightfire.html (2015-06-02)
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  • Brush Fire - LIGO Hanford Observatory
    Aerial drop of fire retardant chemicals

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/brushfire/planepass.html (2015-06-02)
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  • Brush Fire - LIGO Hanford Observatory
    Beam tube covered with fire retardant chemicals and burned brush visible on both sides of beam tube

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/brushfire/bombed.html (2015-06-02)
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  • Brush Fire - LIGO Hanford Observatory
    Burned area between beam tube arms

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/brushfire/burnedbrush.html (2015-06-02)
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  • LIGO Hanford Observatory News
    laser light flows freely into the cavity and the stored optical power rises until equilibrium is established At this point the light circulating in the cavities is about 100 times stronger than incoming laser light The left and right images shown here are taken from a camera view that is looking through the end mirror in the Y mid station and through the beam tube toward the input mirror in the corner station In the left hand photo the field is dark except for some faint scattered light from other sources In the photo at right the control system has brought the cavity into resonance with the laser light The cavity has now filled with light and a small fraction about 10 parts per million of this light leaks through the end mirror Even though the incoming laser light filtered by the mode cleaner was severely reduced in power prior to being injected into the cavity the small leakage of resonating light through the cavity s end mirror drives the camera deeply into saturation Nonetheless a very low power ghost beam reflected off the wedged surface of the vacuum chamber view port provides an unsaturated image of the beam as a small circular disk to the upper right of the main beam This so called bright fringe at the end mirror occurs in concert with a slight loss of reflected light at the input mirror The fringe shape tells us about the alignment of the cavity The circular disk fringes the TEM00 mode are bright while the more complicated looking modes are dim when alignment is nearly perfect You can watch a video clip of fringes as the cavity swings into and out of resonance by downloading the file FPfringes AVI warning 438 KB and using your media player Our

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/200002news/200002han.html (2015-06-02)
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  • LIGO Inauguration -- Welcome
    Questions Contact Mark Coles Elizabeth Wood Last Updated Sept 22 1999 LIGO Hanford Observatory LIGO Livingston Observatory

    Original URL path: http://www.ligo.caltech.edu/LIGO_web/inauguration/nov12.html (2015-06-02)
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