感应加速腔横向阻抗测量  

TRANSVERSE IMPEDANCE MEASUREMENT OF INDUCTION ACCELERATING CAVITY

作　　者：张开志[1,2] 王华岑[1] 章文卫[1] 王光伟 林郁正[3] 

机构地区：[1]中物院流体物理研究所 [2]清华大学加速器实验室,100084 [3]清华大学加速器实验室

出　　处：《强激光与粒子束》2000年第2期219-223,共5页High Power Laser and Particle Beams

基　　金：国防科技基础研究基金资助课题

摘　　要：描述了采用脉冲双线法测量感应加速腔横向阻抗的原理、方法和步骤。测量结果显示 ,新设计的真空腔和绝缘腔的横向阻抗特性优于以前设计的原形腔 ,而且加速间隙由于采用了类同轴结构 ,绝缘腔的低频模式被有效抑制 ,在 753 MHz测得其横向阻抗为 82 0 Ω/m。Transverse impedances can be derived from transmission coefficients measured along one of the two coaxial wires driven by a 180 hybrid. Our results show that the newly designed cavities behave better than the old prototype cavity with larger transverse impedance,and between the newly designed cavities,dielectric cavity with a coxial like accelerating gap geometry should be the first choice because the transverse impedance of the lower mode is oppressed efficiently.

关 键 词：横向阻抗 感应加速腔 横向不稳定性 直线加速器 

分 类 号：TL530.15[核科学技术—核技术及应用]