SIMULATION STUDIES OF SPACE-CHARGE-DOMINATED BEAM TRANSPORT IN LARGE-APERTURE RATIO QUADRUPOLES

被引：1

作者：

FAWLEY, WM ^{[1
]}

LASLETT, LJ ^{[1
]}

CELATA, CM ^{[1
]}

FALTENS, A ^{[1
]}

HABER, I ^{[1
]}

机构：

[1] USN, RES LAB, WASHINGTON, DC 20375 USA

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1993年 / 106卷 / 11期

关键词：

Beam focusing and bending magnets; wiggler magnets; and quadrupoles; Beam transport; Chromatic and geometrical aberrations; Fusion reactors and thermonuclear power studies; PACS; 28.50.Re; 41.85.Gy; 41.85.Ja; 41.85.Lc;

D O I：

10.1007/BF02821261

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

For many cases of interest in the design of heavy-ion fusion accelerators, the maximum transportable current in a magnetic-quadrupole lattice scales as (a/L)(2), where a is the useful dynamic aperture and L is the half-lattice period. There are many cost benefits in maximizing the usable aperture which must be balanced against unwanted effects such as possible emittance growth and particle loss from anharmonic fringe fields. We have used two independent simulation codes to model space-charge-dominated beam transport both in an azimuthally pure quadrupole FODO lattice design and in a more conventional design. Our results indicate that careful matching will be necessary to minimize emittance growth and that (a/L) ratios of 0.2 or larger are possible for particular parameters.

引用

页码：1637 / 1642

页数：6