OPTIMIZATION OF WIGGLER MAGNETS ORDERING USING A GENETIC ALGORITHM

被引：19

作者：

HAJIMA, R

TAKEDA, N

OHASHI, H

AKIYAMA, M

机构：

[1] Department of Nuclear Engineering, University of Tokyo, Bunkyo-ku, Tokyo, 113

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1992年 / 318卷 / 1-3期

关键词：

D O I：

10.1016/0168-9002(92)91167-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Appropriate ordering of magnet pieces in a wiggler can reduce the wiggler field errors and therefore simplify measurement and adjustment procedures which must be taken to reduce them. We applied a genetic algorithm to this optimization problem, that is, determination of the sequence of permanent magnet pieces in a wiggler. Wigglers with small field errors can be designed by this method within a reasonable calculation time even for the case of thousands of magnet pieces. Using appropriate fitness functions, both dipole errors and rms errors of a wiggler can be minimized and the field correction after assembling of the wiggler can be greatly simplified.

引用

页码：822 / 824

页数：3

共 3 条

[1] FEL PERFORMANCE WITH PURE PERMANENT-MAGNET UNDULATORS HAVING OPTIMIZED ORDERING [J].