Principles of velocity modulation

Fremlin, J. H.; Gent, A.W.; Petrie, Daniel; Wallis, Peter; Tomlin, S.G.

doi:10.1049/ji-3a-1.1946.0181

Cited by 17 publications

(5 citation statements)

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“…This is unacceptable for high-power klystrons, (because of grid interception), as well as for the "extended interaction" cavities discussed later, where the electric field is far from constant across the gap. Fremlin, Gent et al, 24 were probably the first to present a detailed analysis of beam-loading in 1946. At the time, klystrons were mostly two-cavity or reflex oscillators, and the calculation of start-oscillation current was critical to their design.…”

Section: Beam-loadingmentioning

confidence: 99%

High Power Klystrons: Theory and Practice at the Stanford Linear Accelerator CenterPart I

Caryotakis¹

2004

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This is Part I of a two-part report on design and manufacturing methods used at SLAC to produce accelerator klystrons. Chapter 1 begins with the history and applications for klystrons, in both of which Stanford University was extensively involved. The remaining chapters review the theory of klystron operation, derive the principal formulae used in their design, and discuss the assumptions that they involve. These formulae are subsequently used in small-signal calculations of the frequency response of a particular klystron, whose performance is also simulated by two different computer codes. The results of calculations and simulations are compared to the actual performance of the klystron.

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Section: Beam-loadingmentioning

confidence: 99%

High Power Klystrons: Theory and Practice at the Stanford Linear Accelerator CenterPart I

Caryotakis¹

2004

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“…In the drift region, the beam density will be further modulated. According to the bunching theory, 19,20 besides the primary modulation component x 0 , there are lots of higher harmonic components in the modulated beam current. These higher harmonic components result from the nonlinear beam-wave interaction in section-I as well as from the electron beam's further density modulation in the drift region.…”

Section: Theoretical Analysismentioning

confidence: 99%

Free electron terahertz wave radiation source with two-section periodical waveguide structures

Liu

Gong

Zhang

et al. 2012

Journal of Applied Physics

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“…So, the incident field from the electron beam will also contain a series of harmonic components: [6], [7] …”

Section: Theoretical Analysismentioning

confidence: 99%

Terahertz wave radiation source based on two-section periodical waveguide structures

Liu

Gong

Zhang

et al. 2012

2012 37th International Conference on Infrared, Millimeter, and Terahertz Waves

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A terahertz wave radiation source with two-section periodical waveguide structure (PWS) is proposed and analyzed. The first section (section-I) is used to pre-modulate the electron beam, and the second section (section-II) is for terahertz wave generation. By means of theoretical analysis and numerical simulations, we demonstrate that the starting current density of the beam-wave interaction in section-II can be significantly reduced provided the operation frequency is the harmonic of electron beam's pre-modulation frequency. This kind of source can generate relatively high power terahertz wave radiation only need the moderate beam current density. And it is a promising tabletop and relatively high power terahertz radiation source for real applications.

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Principles of velocity modulation

Cited by 17 publications

References 0 publications

High Power Klystrons: Theory and Practice at the Stanford Linear Accelerator CenterPart I

High Power Klystrons: Theory and Practice at the Stanford Linear Accelerator CenterPart I

Free electron terahertz wave radiation source with two-section periodical waveguide structures

Terahertz wave radiation source based on two-section periodical waveguide structures

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