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Title: Confined energy distribution for charged particle beams

A charged particle beam is formed to a relatively larger area beam which is well-contained and has a beam area which relatively uniformly deposits energy over a beam target. Linear optics receive an accelerator beam and output a first beam with a first waist defined by a relatively small size in a first dimension normal to a second dimension. Nonlinear optics, such as an octupole magnet, are located about the first waist and output a second beam having a phase-space distribution which folds the beam edges along the second dimension toward the beam core to develop a well-contained beam and a relatively uniform particle intensity across the beam core. The beam may then be expanded along the second dimension to form the uniform ribbon beam at a selected distance from the nonlinear optics. Alternately, the beam may be passed through a second set of nonlinear optics to fold the beam edges in the first dimension. The beam may then be uniformly expanded along the first and second dimensions to form a well-contained, two-dimensional beam for illuminating a two-dimensional target with a relatively uniform energy deposition.
Authors:
 [1] ;  [1]
  1. (Los Alamos, NM)
Publication Date:
OSTI Identifier:
867552
Report Number(s):
US 4962317
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Research Org:
Los Alamos National Laboratory (LANL), Los Alamos, NM
Country of Publication:
United States
Language:
English
Subject:
confined; energy; distribution; charged; particle; beams; charged; particle; beam; formed; relatively; larger; beam; well-contained; beam; relatively; uniformly; deposits; energy; beam; target; linear; optics; receive; accelerator; beam; output; beam; waist; defined; relatively; size; dimension; normal; dimension; nonlinear; optics; octupole; magnet; located; waist; output; beam; phase-space; distribution; folds; beam; edges; dimension; beam; core; well-contained; beam; relatively; uniform; particle; intensity; beam; core; beam; expanded; dimension; form; uniform; ribbon; beam; selected; distance; nonlinear; optics; alternately; beam; passed; set; nonlinear; optics; fold; beam; edges; dimension; beam; uniformly; expanded; dimensions; form; well-contained; two-dimensional; beam; illuminating; two-dimensional; target; relatively; uniform; energy; deposition; accelerator beam; selected distance; beam target; uniform energy; uniform particle; particle beam; particle beam; charged particle; charged particle; energy distribution; particle beams; relatively uniform; relatively uniform; relatively uniform; energy deposition; relatively larger; optics receive; nonlinear optic; nonlinear optic; nonlinear optic; beam core; beam core; deposits energy /250/