通过评估CESR中的非线性BPM响应来改善轨道和光学
Orbit and Optics Improvement by Evaluating the Nonlinear BPM Response in CESR
摘要：
我们提出了一种改进的系统，利用BPM拾取响应的非线性模型的轨道和感应加速器相位测量。我们首先描述的BPM拾取信号的计算作为非线性函数的光束位置使用格林互易定理与二维形式主义。然后，我们描述了这些计算在我们的束位置测量中通过反转的非线性函数，给我们的光束位置作为拾取信号的函数，以及如何这也被用来提高我们的测量的感应加速器相位提前。测量比较这个系统与线性化的皮卡响应历史上使用的CESR。
英文摘要：
We present an improved system for orbit and betatron phase measurement utilizing nonlinear models of BPM pickup response. We first describe the calculation of the BPM pickup signals as nonlinear functions of beam position using Green's reciprocity theorem with a two-dimensional formalism. We then describe the incorporation of these calculations in our beam position measurements by inverting the nonlinear functions, giving us beam position as a function of the pickup signals, and how this is also used to improve our measurement of the betatron phase advance. Measurements are presented comparing this system with the linearized pickup response used historically at CESR.
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