Longitudinal broadband impedance measurement system by coaxial line methods

Author

Gang, Huang ; Wenhui, Huang ; Dechun, Tong ; Zhentang, Zhao

Author_Institution

Tsinghua Univ., Beijing, China

Volume

3

fYear

2001

fDate

2001

Firstpage

2060

Abstract

Impedance of vacuum components in the ring is very important in the analysis of beam instability. This paper describes the construction of a broadband impedance measurement system. This system applies the coaxial line methods of M. Sands and J. Rees. The system is made up of HP8720B vector network analyser and a PC computer. A new RF connector is designed to get the inner conductor straining and RF impedance matching. A pillbox cavity is measured by this system. The result agreed well with the MAFIA calculation

Keywords

accelerator RF systems; accelerator cavities; coaxial cables; electron accelerators; high energy physics instrumentation computing; microcomputer applications; network analysers; particle beam diagnostics; particle beam stability; storage rings; vacuum apparatus; HP8720B vector network analyser; MAFIA calculation; PC computer; RF connector; RF impedance matching; beam instability; coaxial line methods; electron storage ring; inner conductor; longitudinal broadband impedance measurement system; pillbox cavity; vacuum components; Coaxial components; Conductors; Connectors; Couplings; Frequency measurement; Impedance measurement; Radio frequency; Scattering parameters; Transmission line measurements; Yarn;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.987276

Filename

987276