BPM button characterization for offset calibration | Zendy

Y. Chung | Zendy

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BPM button characterization for offset calibration

Author(s) -

Y. Chung

Publication year - 1992

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/87850

Subject(s) - reflectometry , capacitance , offset (computer science) , electrical impedance , calibration , measure (data warehouse) , acoustics , cable gland , electrical engineering , time domain , physics , electronic engineering , optics , computer science , engineering , electrode , quantum mechanics , database , computer vision , programming language

In this note, a basic theory of wave propagation in dielectric media is discussed in conjunction with S parameters to derive the button gain coefficient g{sub e} and an analytic expression for the signal from time domain reflectometry (TDR) measurement on a cable and a button. The results can be used to measure the button capacitance and the characteristic impedances of the cable and the button feedthrough. Since g{sub e} is a function of S parameters and the button capacitance C{sub p}, a suggestion is made to make the gain coefficients the same for all four buttons in a BPM by carefully matching the buttons and the cables

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