CERN Accelerating science

Article
Title	Development of C-band High-Power Mix-Mode RF Window
Author(s)	Michizono, S ; Fukuda, S ; Matsumoto, T ; Nakao, K ; Takenaka, T
Affiliation	(KEK, Ibaraki MELCO, Hyogo)
Publication	2004
In:	22nd International Linear Accelerator Conference, Lubeck, Germany, 16 - 20 Aug 2004, pp.745
Subject category	Accelerators and Storage Rings
Abstract	High power c-band (5712 MHz) rf system (40 MW, 2 μs, 50 Hz) is under consideration for the electron-linac upgrade aimed for the super KEKB project. An rf window, which isolates the vacuum and pass the rf power, is one of the most important components for the rf system. The window consists of a ceramic disk and a pill-box housing. The mix-mode rf window is designed so as to decrease the electric field on the periphery of the ceramic disk. A resonant ring is assembled in order to examine the high-power transmission test. The window was tested up to the transmission power of 160 MW. The rf losses are also measured during the rf operation.