Energy filter device
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United States of America Patent
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Jan 27, 2009
Grant Date -
Feb 10, 2005
app pub date -
May 25, 2004
filing date -
May 26, 2003
priority date (Note) -
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Abstract
An energy filter device for beams which are used in the course of ion beam therapy, wherein at least one passive modulator is provided. The modulator can comprise a scattering film for the beams and a collimator with an opening for controlling the beams, or a magnetic filter and an absorber, or a nonlinear filter and an apparatus for clipping the intensity of individual energy levels of the beams.
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