Mode trap for absorbing transverse modes of an accelerated electron beam

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869335

Chojnacki, Eric P ^[1]

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1. Woodridge, IL

A mode trap to trap and absorb transverse modes formed by a beam in a linear accelerator includes a waveguide having a multiplicity of electrically conductive (preferably copper) irises and rings, each iris and ring including an aperture, and the irises and rings being stacked in a side-by-side, alternating fashion such that the apertures of the irises and rings are concentrically aligned. An absorbing material layer such as a dielectric is embedded in each iris and ring, and this absorbing material layer encircles, but is circumferentially spaced from its respective aperture. Each iris and ring includes a plurality of circumferentially spaced slots around its aperture and extending radially out toward its absorbing material layer.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5317234
• OSTI ID: 869335
• Country of Publication: United States
• Language: English

Related Subjects

mode
trap
absorbing
transverse
modes
accelerated
electron
beam
absorb
formed
linear
accelerator
waveguide
multiplicity
electrically
conductive
preferably
copper
irises
rings
iris
including
aperture
stacked
side-by-side
alternating
fashion
apertures
concentrically
aligned
material
layer
dielectric
embedded
encircles
circumferentially
spaced
respective
plurality
slots
extending
radially
material layer
extending radially
circumferentially spaced
absorbing material
electrically conductive
electron beam
linear accelerator
spaced slots
mode trap
transverse mode
transverse modes
extending radial
accelerated electron
sorbing material
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