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Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron

  • US 8,368,038 B2
  • Filed: 09/01/2009
  • Issued: 02/05/2013
  • Est. Priority Date: 05/22/2008
  • Status: Active Grant
First Claim
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1. An apparatus for controlling intensity of charged particles extracted from a circulating charged particle beam path in a synchrotron, said apparatus comprising:

  • a radio-frequency field generator, wherein during use said radio-frequency generator applies a radio-frequency field to the circulating charged particles yielding betatron oscillating charged particles;

    an extraction material, wherein during use at least a portion of the betatron oscillating charged particles pass through said extraction material resulting in a secondary emission electron flow using electrons originating from the extraction material and without loss of electrons from the betatron oscillating charged particles;

    an intensity sensor, said intensity sensor configured to determine a measure of the electron flow; and

    a feedback control loop comprising an intensity controller, said intensity controller configured to provide the measure of electron flow as a feedback to said radio-frequency generator,said feedback control loop configured to control intensity of charged particles extracted from said synchrotron via control of said radio-frequency generator,wherein intensity comprises a number of the charged particles extracted as a function of time.

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