Electromagnetic Analysis of Reentrant Klystron Cavity

Tiwari, Ashish K.; Hannurkar, P.R.

doi:10.1007/s10762-010-9701-5

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…Mostly using rectangular re-entrant cavities it has been possible to generate output power of a few kWatts. For electron beam device applications, the design of klystron cavities (often at lower frequencies) use standard lumped circuit models adjusted to include plasmawave effects [28][29][30][31][32]. Cylindrical re-entrant cavities have also been used for studying absorption processes in small liquid and solid materials [33][34], and also the breakdown of gases to E-field [35].…”

Section: Introductionmentioning

confidence: 99%

Rigorous analysis of highly tunable cylindrical transverse magnetic mode re-entrant cavities

Floch

Fan

Aubourg

et al. 2013

Review of Scientific Instruments

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Cylindrical re-entrant cavities are unique three-dimensional structures that resonate with their electric and magnetic fields in separate parts of the cavity. To further understand these devices, we undertake rigorous analysis of the properties of the resonance using "in-house" developed Finite Element Method (FEM) software capable of dealing with small gap structures of extreme aspect ratio. Comparisons between the FEM method and experiments are consistent and we illustrate where predictions using established lumped element models work well and where they are limited. With the aid of the modeling we design a highly tunable cavity that can be tuned from 2 GHz to 22 GHz just by inserting a post into a fixed dimensioned cylindrical cavity. We show this is possible, as the mode structure transforms from a re-entrant mode during the tuning process to a standard cylindrical transverse magnetic mode.

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