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合肥光源镀膜陶瓷真空室纵向阻抗计算
引用本文:王琳,徐宏亮,尚雷,王相綦,李为民.合肥光源镀膜陶瓷真空室纵向阻抗计算[J].强激光与粒子束,2003,15(4):382-384.
作者姓名:王琳  徐宏亮  尚雷  王相綦  李为民
作者单位:中国科学技术大学 国家同步辐射实验室, 安徽 合肥 230029
基金项目:国家九五重大科学工程国家同步辐射实验室二期工程资助课题
摘    要: 在估计合肥光源新注入系统中回形镀膜陶瓷真空室的耦合阻抗时,对于规则轴对称边界,可以采用场匹配技术求解柱坐标系中Maxwell方程得到耦合阻抗解析表达式。对于非规则形状,解析求解困难,须根据同轴线方法测量纵向阻抗基本原理,数值计算镀膜陶瓷真空室耦合阻抗。计算结果表明,陶瓷真空室内表面镀金属膜可以大大降低束流耦合阻抗,但镀膜陶瓷真空室仍是合肥光源储存环的主要阻抗来源之一。

关 键 词:镀膜陶瓷真空室  纵向耦合阻抗  同轴线方法  合肥光源
文章编号:1001-4322(2003)04-0382-03
收稿时间:2002/9/3
修稿时间:2002年9月3日

Longitudinal impedance calculation of coated ceramic vacuum chamber at HLS
wang lin,xu hong liang,shang lei,wang xiang qi,li wei min.Longitudinal impedance calculation of coated ceramic vacuum chamber at HLS[J].High Power Laser and Particle Beams,2003,15(4):382-384.
Authors:wang lin  xu hong liang  shang lei  wang xiang qi  li wei min
Institution:University of Science and Technology of China, National Synchrotron Radiation Laboratory,P.O.Box 6022, Hefei 230029, China
Abstract:The purpose of this paper is estimate the longitudinal coupling impedance of the coated ceramic vacuum chamber employed in new injection system of Hefei Light Source. For the regular axially symmetric boundary, the analytical results of the impedance for the coated ceramic chamber can be easily obtained by application field matching techniques to Maxwell equations in cylindrical coordinate system. For the irregular boundary used in HLS, it is very hard to obtain analytical result of impedance. Based on the impedance measurement principle of coaxial wire method, the impedance of ceramic chamber was numerically calculated. The calculated results showed that, although coating inside ceramic chamber can reduce impedance by some factor, the coated ceramic chamber is one of the main impedance sources of HLS storage ring.
Keywords:Coated ceramic vacuum chamber  Longitudinal coupling impedance  Coaxial wire method  HLS  
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