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Fabrication was completed on an X-Band multiple beam klystron (MBK) designed to produce 50 MW of RF power in microsecond pulses. The klystron incorporates a confined flow, multiple beam gun where the cathodes are located relatively far from the device axis. This required unique focusing structures to maintain beam quality. The MBK will be tested at Brookhaven National Laboratories.
Electron cyclotron heating (ECH) is well established as an effective mechanism for heating tokamak plasmas and is effective for controlling instabilities that can disrupt operation.Calabazas Creek Research, Inc. (CCR) is pursuing two approaches to improve collectors for high average power operation. The first is to increase the strength of the collector surface to withstand the anticipated power cycling...
A design for a 200 MW L band klystron is described. An annular beam is used to minimize the space charge depression of the beam. An efficiency of 40% is predicted by the large signal code KLSC. The modeling of the electron gun and RF structure are discussed
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