Micropole undulator

Patent · Tue Jan 24 04:00:00 EST 1989

OSTI ID:866831

Csonka, Paul L ^[1]; Tatchyn, Roman O ^[2]

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1. Eugene, OR
2. Palo Alto, CA

Micropole undulators for use in the generation of x-rays from moving charged particles and methods for manufacturing such undulators are disclosed. One type of micropole undulator has two jaws containing rows of spaced apart poles arranged so that each pole produces a magnetic field aligned with all other similar fields. An external biasing field extends through the jaws so that an overall undulator field of substantially sinusoidal shape and substantially zero average value extends along the undulator axis. Preferably, the poles are bars formed of a magnetizable, but unmagnetized, material so that, after the jaws are assembled, all of the bars can be magnetized simultaneously in a uniform magnetic field of suitable strength. Another type of micropole undulator incorporates two parallel layers which have been magnetized to provide rows of alternating magnetic fields extending in opposite directions, the layers being positioned between the pole faces of a highly magnetically permeable material with the south poles of one layer opposite the north poles of the other. Poles in the layers are formed by subjecting successive regions of each layer to oppositely directed and suitably varied magnetizing forces.

• Research Organization: STANFORD UNIVERSITY; University of Oregon
• Sponsoring Organization: USDOE
• DOE Contract Number: FG06-85ER13309; AC03-82ER13000
• Assignee: State of Oregon Acting by and through State Board of Higher (Eugene, OR)
• Patent Number(s): US 4800353
• OSTI ID: 866831
• Country of Publication: United States
• Language: English

Related Subjects

/335/
aligned
alternating
alternating magnetic
apart
apart poles
arranged
assembled
average
axis
bars
biasing
charged
charged particle
charged particles
containing
directed
directions
disclosed
extending
extends
external
field
field aligned
fields
forces
formed
generation
highly
incorporates
jaws
layer
layers
magnetic
magnetic field
magnetic fields
magnetically
magnetically permeable
magnetizable
magnetized
magnetizing
manufacturing
material
methods
micropole
micropole undulator
micropole undulators
moving
moving charged
north
opposite
opposite direction
opposite directions
oppositely
oppositely directed
overall
parallel
particles
permeable
permeable material
pole
pole produces
poles
positioned
preferably
produces
provide
regions
rows
shape
similar
similar field
similar fields
simultaneously
sinusoidal
south
south poles
spaced
spaced apart
strength
subjecting
substantially
substantially zero
successive
suitable
suitably
type
undulator
undulators
uniform
uniform magnetic
unmagnetized
value
varied
x-rays
zero