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Title: Passive, achromatic, nearly isochronous bending system

Abstract

A particle beam bending system having a geometry that applies active bending only beyond the chord of the orbit for any momentum component. Using this bending configuration, all momentum components emerge dispersed in position only; all trajectories are parallel by construction. Combining a pair of such bends with reflective symmetry produces a bend cell that is, by construction, achromatic to all orders. By the particular choice of 45.degree. individual bends, a pair of such achromats can be used as the basis of a 180.degree. recirculation arc. Other rational fractions of a full 180.degree. bend serve equally well (e.g., 2 bends/cell.times.90.degree./bend.times.1 cell /arc; 2 bends/cell.times.30.degree./bend.times.3 cells/arc, etc), as do combinations of multiple bending numerologies (e.g., 2 bends/cell.times.22.5.degree./bend.times.2 cells+2 bends/cell.times.45.degree./bend.times.1 cell). By the choice of entry pole face rotation of the first magnet and exit pole face rotation of the second magnet (with a value to be determined from the particular beam stability requirements imposed by the choice of bending angle and beam properties to be used in any particular application), desirable focusing properties can be introduced and beam stability can be insured.

Inventors:
;
Publication Date:
Research Org.:
Southeastern Universities Research Association, Inc.
Sponsoring Org.:
USDOE
OSTI Identifier:
1174852
Patent Number(s):
6,737,655
Application Number:
10/307,075
Assignee:
Southeastern Universities Research Association, Inc.
DOE Contract Number:  
AC05-84ER 40150
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Douglas, David R., and Yunn, Byung C.. Passive, achromatic, nearly isochronous bending system. United States: N. p., 2004. Web.
Douglas, David R., & Yunn, Byung C.. Passive, achromatic, nearly isochronous bending system. United States.
Douglas, David R., and Yunn, Byung C.. Tue . "Passive, achromatic, nearly isochronous bending system". United States. https://www.osti.gov/servlets/purl/1174852.
@article{osti_1174852,
title = {Passive, achromatic, nearly isochronous bending system},
author = {Douglas, David R. and Yunn, Byung C.},
abstractNote = {A particle beam bending system having a geometry that applies active bending only beyond the chord of the orbit for any momentum component. Using this bending configuration, all momentum components emerge dispersed in position only; all trajectories are parallel by construction. Combining a pair of such bends with reflective symmetry produces a bend cell that is, by construction, achromatic to all orders. By the particular choice of 45.degree. individual bends, a pair of such achromats can be used as the basis of a 180.degree. recirculation arc. Other rational fractions of a full 180.degree. bend serve equally well (e.g., 2 bends/cell.times.90.degree./bend.times.1 cell /arc; 2 bends/cell.times.30.degree./bend.times.3 cells/arc, etc), as do combinations of multiple bending numerologies (e.g., 2 bends/cell.times.22.5.degree./bend.times.2 cells+2 bends/cell.times.45.degree./bend.times.1 cell). By the choice of entry pole face rotation of the first magnet and exit pole face rotation of the second magnet (with a value to be determined from the particular beam stability requirements imposed by the choice of bending angle and beam properties to be used in any particular application), desirable focusing properties can be introduced and beam stability can be insured.},
doi = {},
url = {https://www.osti.gov/biblio/1174852}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {5}
}

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