DocumentCode
1961615
Title
Suppression of higher-order modes in an RF cavity by resistive material
Author
Koseki, Tadashi ; Izawa, Masaaki ; Kamiya, Yukihide
Author_Institution
Inst. of Solid State Phys., Tokyo Univ., Japan
fYear
1993
fDate
17-20 May 1993
Firstpage
930
Abstract
A new 500-MHz cavity which has a simple damped structure for the 1.5-GeV VUV ring will be presented in this paper. The feature of the cavity design is that higher-order modes (HOMs) propagate out from the cavity through the beam-duct with a large diameter and are absorbed in resistive parts in the duct. A low power measurement on a prototype model of the cavity has been carried out and the Q-values of HOMs are confirmed to be drastically reduced. Thus the coupled-bunch instabilities due to HOMs are expected to be sufficiently suppressed
Keywords
beam handling equipment; cavity resonators; electron accelerators; storage rings; 1.5 GeV; 500 MHz; RF cavity; VUV ring; coupled-bunch instabilities; higher-order mode suppression; quality factor; resistive material; Acceleration; Conductivity; Impedance; Optical coupling; Particle beams; Production facilities; Prototypes; Radio frequency; Storage rings; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location
Washington, DC
Print_ISBN
0-7803-1203-1
Type
conf
DOI
10.1109/PAC.1993.308726
Filename
308726
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