摘要
;为完成美国PEPII低能环四极磁铁的测量任务,我们利用慢速旋转长线圈的测量方法,使测量重复精度达到万分之二;旋转长线圈由主线圈和反低线圈组成,利用主线圈测量主极矩信号,利用主线圈和反线圈串联反接所组成的双线圈测量高次谐波,其目的是将主极矩信号(即四极矩)信号抵消掉,从而可以采用较大的放大倍数,提高了测量系统的灵敏度,使高次谐波的测量精度大大提高;介绍基于V isual C++的慢速旋转长线圈测量法测量加速器多极磁铁的程序设计方法,并结合对美国PEPII低能环四极铁的测量,给出相应的数据处理方法和测量结果;程序编写过程中,还给出了数据采集和图形界面的设计思想,以供参考。
In order to meet the requirements of the measured replicability less than 2×10^-4, a slow rotating long coil measurement system was developed for the field measurement of American PEPII Low energy ring quadrupole magnet. Two coils measurement system, which included a main coil and a bucking coil, was designed to measure the harmonic contents of the magnet. The main coil was used to measure the dominant term, i. e. , the quadrupole component, where the main coil and the bucking coil Connected in anti-series to form the two-coil to measure the high order harmonics. With two-coil configuration system, where the quadrupole term was nearly bucked out, a high amplifier factor can be selected to measure the high order term so that measurement sensitivity was greatly improved. The software is designed based on Visual C ＋ ＋ , by using PEPII low energy ring quadrupole magnet as an example, the author also gives some ideas for software design on data acquisitions and graphics interface.
出处
《计算机测量与控制》
CSCD
2008年第2期285-287,293,共4页
Computer Measurement &Control
基金
国际合作项目
