Development of a HOM-damped cavity for the KEK B-factory (KEKB)

Author

Kageyama, T. ; Akai, K. ; Akasaka, N. ; Ezura, E. ; Naito, F. ; Shintake, T. ; Takeuchi, Y. ; Yamazaki, Y. ; Kobayashi, T.

Author_Institution

Nat. Lab. for High Energy Phys., Ibaraki, Japan

Volume

3

fYear

1995

fDate

1-5 May 1995

Firstpage

1759

Abstract

This paper describes a high-power test model of the normal conducting RF cavity for the KEK B Factory, KEKB. This cavity is loaded with a large coaxial waveguide for higher order mode (HOM) damping. The waveguide is equipped with a notch filter designed to block the TEM wave at the accelerating frequency of 509 MHz. Other waves coupled with the cavity HOMs are guided through the filter and absorbed by bullet-shape sintered SiC ceramics. This prototype model has been designed and built to demonstrate the performance in high power operation and the fabrication technologies involved. The results of the high-power test is reported together with the cavity structure and its RF properties

Keywords

accelerator RF systems; accelerator cavities; electron accelerators; particle beam stability; storage rings; 509 MHz; HOM-damped cavity; KEK B-factory; KEKB; SiC; TEM wave; accelerating frequency; bullet-shape sintered SiC ceramics; cavity structure; coaxial waveguide; fabrication; high power operation; high-power test model; higher order mode damping; normal conducting RF cavity; notch filter; prototype; Acceleration; Ceramics; Coaxial components; Damping; Filters; Production facilities; Prototypes; Radio frequency; Silicon carbide; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505352

Filename

505352