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Title: Micropole undulator

Abstract

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. 16 figs.

Inventors:
;
Issue Date:
Research Org.:
Stanford Univ., CA (United States); Univ. of Oregon, Eugene, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
7266659
Patent Number(s):
4800353
Application Number:
CNN: AFOSR-85-0326; PPN: US 6-925036
Assignee:
Univ. of Oregon, Eugene, OR (United States)
DOE Contract Number:  
FG06-85ER13309; AC03-82ER13000
Resource Type:
Patent
Resource Relation:
Patent File Date: 30 Oct 1986
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; WIGGLER MAGNETS; DESIGN; MANUFACTURING; X-RAY SOURCES; MAGNETIC FIELDS; MAGNETIC MATERIALS; ELECTRICAL EQUIPMENT; ELECTROMAGNETS; EQUIPMENT; MAGNETS; MATERIALS; RADIATION SOURCES; X-RAY EQUIPMENT; 430300* - Particle Accelerators- Auxiliaries & Components

Citation Formats

Csonka, P L, and Tatchyn, R O. Micropole undulator. United States: N. p., 1989. Web.
Csonka, P L, & Tatchyn, R O. Micropole undulator. United States.
Csonka, P L, and Tatchyn, R O. Tue . "Micropole undulator". United States.
@article{osti_7266659,
title = {Micropole undulator},
author = {Csonka, P L and Tatchyn, R O},
abstractNote = {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. 16 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}