Beam Position Monitor Characterization for the High Energy Photon Source Synchrotron

Beam position monitor (BPM) characterization has been widely studied at the synchrotron. The characteristic impedance of a stripline BPM was designed using simulation and measured time-domain reflectometer method. mechanical electrical parameters feedthroughs with buttons used for BPMs were measured. Special care taken in analysis consistency four channels BPM. sorted based on their capacitance values. This paper presents results BPMs. electro-mechanical offsets Lambertson method, calibration coefficients stretched wire. differences introduced during mass production determined by statistical measurement results.