Confined energy distribution for charged particle beams

Patent · Mon Jan 01 04:00:00 EST 1990

OSTI ID:867552

Jason, Andrew J ^[1]; Blind, Barbara ^[1]

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1. Los Alamos, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4962317
• OSTI ID: 867552
• Country of Publication: United States
• Language: English

Related Subjects

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accelerator
accelerator beam
alternately
beam
beam core
beam target
beams
charged
charged particle
confined
core
defined
deposition
deposits
deposits energy
dimension
dimensions
distance
distribution
edges
energy
energy deposition
energy distribution
expanded
fold
folds
form
formed
illuminating
intensity
larger
linear
located
magnet
nonlinear
nonlinear optic
normal
octupole
optics
optics receive
output
particle
particle beam
particle beams
passed
phase-space
receive
relatively
relatively larger
relatively uniform
ribbon
selected
selected distance
set
size
target
two-dimensional
uniform
uniform energy
uniform particle
uniformly
waist
well-contained