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Large particle accelerator projects like the European X-ray Free Electron LASER (XFEL), which is under construction at DESY in Hamburg (Germany), or like the planned International Linear Collider (ILC) favor MBKs for their ability to generate high rf output powers at moderate electron beam energies. For the XFEL, Deutsches Electronen Synchrotron (DESY) ordered a prototype of a horizontally oriented,...
An air cooled, 1 MW klystron with an instantaneous bandwidth of 50 MHz centered about 5625 MHz has been developed for radar applications. Details of the design and test results are presented.
CPI has designed and is currently in the process of building a prototype of a horizontally oriented, ges10 MW, ges65% efficiency multiple beam klystron (MBK) operating at 1300 MHz. The klystron, designated the VKL-8301B, was ordered by DESY for the European XFEL. The klystron was designed using of sate-of-the-art multi-dimensional design codes to ensure that all performance requirements are exceeded...
CPI's second generation, 10 MW, 1300 MHz multiple beam klystron (MBK), designated the VKL-8301B, has been developed and is being built for the European X-ray free electron laser (XFEL), which is under construction at DESY in Hamburg (Germany). At 10 MW peak rf output the MBK is required to provide at least 65% efficiency and more than 3 MHz instantaneous -1 dB bandwidth. Average power and rf pulse...
We describe a design for a coaxial inductive output tube (IOT) that operates in the 200 MHz range with 250 kW CW output power. Of particular interest are formation of a radial beam with a cylindrical gridded gun, and high efficiency RF interaction in a coaxial output cavity.
This paper presents on-orbit performance of the CloudSat extended interaction klystron (EIK) and reviews requirements, design and performance of EIK's for future space missions. The CloudSat mission provides cross-sectional view of clouds with information on their thickness, altitude, optical properties, water and ice content. It is concluded that following successful development and on-orbit operation...
Summary form only given. The design and operation of a 1.3 GHz higher-order-mode multiple beam klystron (MBK) that has been developed for the TESLA facility will be described. The klystron contains six off-axis electron beams set on a 26.7 cm bolt circle diameter that interact with a combination of TM02 and TM01 mode cavities to efficiently produce high power RF. The off-axis electron beams are the...
An objective measure is needed to assess cathode emission quality and life expectancy both for real-life applications and for cathode improvement research. The PWFD (practical work function distribution) is introduced as a convenient and simple method for representing measured cathode emission data. The PWFD is a sensitive and objective measure of emission quality useful for routine diagnosis of operating...
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