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Charged particle cancer therapy beam path control method and apparatus

  • US 8,710,462 B2
  • Filed: 05/22/2010
  • Issued: 04/29/2014
  • Est. Priority Date: 05/22/2008
  • Status: Active Grant
First Claim
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1. An apparatus for radiation therapy of a tumor of a patient with charged particles from a charged particle cancer therapy system, comprising:

  • a charged particle beam path, said charged particle beam path sequentially traversing;

    an injector, said injector further comprising;

    an ion beam generation source; and

    a magnetic material centrally positioned within said ion beam generation source, said magnetic material creating a magnetic field barrier between a high temperature plasma zone within said ion beam generation source and a low temperature plasma region,wherein a portion of said charged particle beam path circumferentially surrounds (1) negative ions formed in said low temperature plasma region and (2) a negative ion beam resulting from extraction of the negative ions from the low temperature plasma region;

    a synchrotron; and

    a beam transport system, wherein said synchrotron comprises an extraction foil.

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