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Iterative computational design of asymmetrical electron beam devices, such as sheet beam and multiple beam klystrons, requires 3D analysis involving complex geometries. Manual, iterative design is extremely difficult and impractical for all but the simplest devices. Computer optimization tools and techniques are described that provide automated design of these devices using common personal computers...
As currently envisioned, approximately 750 10 MW multiple beam klystrons (MBK) will be used to power the ILC accelerator. The critical role of the MBK to the successful operation of the machine makes it a key ILC component. The large quantity required coupled with its technical sophistication also makes it one of the more expensive individual components. CPI has manufactured a prototype MBK that was...
Multiple beam klystrons (MBKs) are high power and high efficiency amplifiers that use a set of well separated electron beamlets, each propagating in its own beam tunnel, but interacting with common fields in gaps near cavities. In this way the perveance of the individual beamlets can be kept low, reducing space-charge effects, while the total beam current can be high, facilitating high power operation...
There are a lot of kinds of multiple beam cavities used in klystron amplifiers. Ring, classic cylindrical and multiple barrel cavities have been researched using CST Microwave Studio 5.0 simulation code. Shunt impedance of klystron cavities determines the efficiency of interaction of electron beam with EM field. So Rsh/Q values of cavities of interest are considered
We describe the development of simple formulae to accurately estimate the R/Q's in single-gap, fundamental-mode MBK cavities and to describe their sensitivity to radius and frequency. These equations can be very useful in the initial design process and can lead to robust cavity designs that are relatively insensitive to manufacturing tolerances
Summary form only given. We present simulation results for a multiple-beam klystron using a new parallel algorithm in the TESLA code, where individual beams are modeled separately but coupled self-consistently through the resonators. Multiple beam klystrons (MBKs) are high power and high efficiency amplifiers that use separate beamlets, each propagating in its own beam tunnel, but interacting with...
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