F,L Curve Fitting and Computing of SFC RF Cavity

• 作者: Wang Xianwu Su Xueming Yang Weiqing
• 来源期刊: 近代物理研究所和兰州重离子加速器实验室年报：英文版
• 学科: 工学
• 关键词: 证监会 曲线拟合 高频腔 计算 共振频率 定位系统 无线电频率 机械结构
• 年，卷（期）: 2004,（1）
• 页码范围: 156
• 页数: 1页
• 分类号: TN92

摘要

<正>SFC RF cavity is a resonant cavity 1/4 wavelength(showed in Fig.1), there is a strict relation between resonant frequency F and length L. When accelerator system changes the sort of beam current, radio frequency must be changed too. But the mechanical structure of short-plate position system of RF cavity is very complex, when changing frequency every time, we need do adjustment again and again. It very wastes time and energy. In order to realize exact presetting of frequency, we base on a great deal of discrete data and make use of curve fitting algorithm which is least-squares and polynomial of Matlab as well as visual programming method, and program the computing and curve fitting program. We preset frequency according to the result of the computing program, the result is fitted very well. It improves our work efficiently.