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NEGATIVE ION SOURCE METHOD AND APPARATUS USED IN CONJUNCTION WITH A CHARGED PARTICLE CANCER THERAPY SYSTEM

  • US 20100014639A1
  • Filed: 09/28/2009
  • Published: 01/21/2010
  • Est. Priority Date: 05/22/2008
  • Status: Active Grant
First Claim
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1. An apparatus for injecting a charged particle beam into an accelerator of an irradiation device, said irradiation device irradiating a tumor during use, said apparatus comprising:

  • a negative ion source, said negative ion source configured to produce negative ions in a negative ion beam path, said negative ion source comprising a magnetic field barrier across a gap separating a high energy plasma chamber from a low temperature plasma zone;

    an ion beam focusing lens configured to focus the negative ions; and

    a converting foil, said converting foil converting the negative ions into the charged particle beam.

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