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:
- Issue Date:
- Research Org.:
- Southeastern Universities Research Association, Inc.
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1174852
- Patent Number(s):
- 6737655
- Application Number:
- 10/307,075
- Assignee:
- Southeastern Universities Research Association, Inc.
- Patent Classifications (CPCs):
-
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05H - PLASMA TECHNIQUE
- 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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {5}
}