NANOMETER RESOLUTION BPM USING DAMPED SLOT RESONATOR

摘要

A new type of high resolution beam position monitor called the damped slot resonator rf BPM has been installed at the focal point of the FFTB [1]. It is comprised of a cylindrical resonant cavity with a tuned choke joint at the TM_(110) resonance[2]. The BPM has a large dynamic range from the nm to mm range with a minimum resolution of 1 nm. We report on the rf cavity cold tests performance, processing electronics design, and some experimental results obtained in the high energy electron beam line.