Title :
Coupling cavity damper for the ARES
Author :
Naito, F. ; Akai, K. ; Akasaka, N. ; Ezura, E. ; Kageyama, T. ; Mizuno, H. ; Nakanishi, H. ; Takeuchi, Y. ; Yamazaki, Y. ; Kobayashi, T.
Author_Institution :
High Energy Accel. Res. Organ., KEK, Tsukuba, Japan
Abstract :
The coaxial (WX120D) antenna damper has been developed for damping the parasitic 0 and π modes of the KEKB ARES cavity. It is installed in the coupling cavity of the ARES. The damper consists of a disk-type coaxial ceramic window and a cross stub angle. The damper has a broadband RF property in order to absorb the RF power of the parasitic modes. The cross angle is utilized for supplying the cooling water to the antenna. The damper was designed by using a computer simulation code without a cold model test. Finally the properties of the damper has been confirmed by the high-power and the beam test for the ARES cavity
Keywords :
accelerator RF systems; accelerator cavities; electron accelerators; high energy physics instrumentation computing; storage rings; ARES; KEK B-factory; WX120D antenna damper; beam test; broadband RF property; coaxial antenna damper; computer simulation code; coupling cavity damper; cross stub angle; disk-type coaxial ceramic window; electron storage rings; high-power test; parasitic modes; Acceleration; Ceramics; Coaxial components; Computer simulation; Cooling; Damping; Energy storage; Frequency; Shock absorbers; Testing;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753080
