Impedance measurements of a HOM-damped low power model cavity

Author

Marhauser, F. ; Weihreter, E. ; Weber, C.

Author_Institution

BESSY II, Berlin, Germany

Volume

2

fYear

2003

fDate

12-16 May 2003

Firstpage

1189

Abstract

In the frame of a European Community funded project a higher order mode (HOM) damped normal conducting 500 MHz cavity is under development optimized for the use in 3rd generation storage ring light sources. The relevant HOM-impedances have been measured with a fully scaled low power model made from aluminium. By using a cutoff frequency of 615 MHz for the damping waveguides we have found a good compromise between the preservation of the accelerating mode impedance and the efficient broadband damping of HOM´s. Detailed experimental results are presented and compared with numerical simulations.

Keywords

accelerator RF systems; accelerator cavities; beam handling techniques; electric impedance measurement; particle beam diagnostics; particle beam dynamics; waveguides; 500 MHz; 615 MHz; accelerating mode impedance; cutoff frequency; damping waveguides; efficient broadband damping; higher order mode damped normal conducting cavity; higher-order mode damped low power model cavity; impedance measurements; Acceleration; Aluminum; Cutoff frequency; Damping; Impedance measurement; Numerical simulation; Optical coupling; Power measurement; Prototypes; Storage rings;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289648

Filename

1289648