四极磁铁

MAFIA程序在小型短四极磁铁设计中的应用

MAFIA analysis of miniature short quadrupole magnet design

文章阐述系统总体结构的设计原则以及二极磁铁（B）和四极磁铁（Q）磁场的跟踪误差要求。

The main design principle of the power supply system is described in the paper , and some considerations for close dipole magnet ( B ) and quadrupole magnet ( Q ) field tracking during beam acceleration period are also discussed .

GSI自1971年直到目前都是用这种办法来检验该所的加速器系统中的每一个四极磁铁的制造质量。

Since 1971 this method have been using to measure each QP of the accelerator system at GSI for checking the manufacturing qualities of these QP .

脉冲四极磁铁峰值梯度测量

Measurements of peak field grandient of pulsed quadrupole magnets

四极磁铁比较测量

Magnetic field measurement of quadrupole by comparison method

BPL750keV束流输运线上四极磁铁的设计

The designs of quadrupole magnets for 750 keV beam - transport line in BPL

使用霍尔探头来测定四极磁铁的磁轴和机械轴之间的距离

Determination of the distance between magnetic and mechanical axis of quadrupole magnets using a Hall probe

四极磁铁在加速之余，我们也需要对粒子束进行调焦。

In addition to just curving the beam , it is also necessary to focus it .

论文中采用极面优化的方法设计了二极磁铁、四极磁铁和六极磁铁单一功能的磁铁，获得了高质量的目标磁场，与传统的方法相比，高次谐波场很小。

Compared with magnet field quality designed by traditional methods , the high-harmonic fields of the magnet are very small .

模拟还发现：短极颈四极磁铁励磁线圈本身的磁场直接影响四极磁铁极端面附近的磁场分布。

The simulations also show that the magnetic field from the excitation windings directly influences the field distribution at the end of the quadrupole magnet if the pole neck is too short .

电磁铁是加速器的重要组成部分之一，加速器常用的电磁铁有二极磁铁、四极磁铁、六极磁铁和八极磁。

The electromagnets are important parts of an accelerator . There are two sorts of commonly used electromagnets . One is single-function magnet , such as quadrupole magnet , sextupole magnet and octupole magnet .