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Tandem charged particle accelerator including carbon ion beam injector and carbon stripping foil

  • US 9,543,106 B2
  • Filed: 09/21/2015
  • Issued: 01/10/2017
  • Est. Priority Date: 05/22/2008
  • Status: Active Grant
First Claim
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1. An apparatus configured to strip electrons from charged particles, the apparatus comprising:

  • a tandem accelerator comprising;

    a beam path;

    a vacuum tube circumferentially surrounding a portion of a longitudinal axis of the beam path;

    a first electron extraction subsystem, comprising;

    a carbon stripping foil axially crossing the beam path, during use the charged particles comprising positively charged particles traversing said carbon stripping foil, said carbon stripping foil configured to strip electrons from the positively charged particles traversing through said carbon stripping foil, said carbon stripping foil comprising a thickness of thirty to two hundred angstroms;

    a semi-rigid support grid having a first side, said first side of said support grid uniformly contacting a dorsal side of said carbon stripping foil; and

    a vacuum seal between said carbon stripping foil and said vacuum tubea second electron extraction subsystem, said second electron extraction subsystem comprising;

    a hydrogen gas source; and

    a gas port switch, said gas port switch configured to open a port between said hydrogen gas source and a first interior section of said vacuum tube, said first interior section in the beam path prior to a second interior section of said vacuum tube housing said carbon stripping foil,wherein the charged particles comprise carbon anions prior to said first interior section,wherein during use hydrogen gas injected through said gas port switch strips electrons from the carbon anions to form multivalent carbon cations, andwherein during use the carbon foil further strips electrons from the multivalent carbon cations to form at least one of C5+ and C6+.

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