Simulations of multipactor in circular waveguides

Semenov, V. E.; Zharova, N. A.; Anderson, D.; Lisak, M.; Puech, J.

doi:10.1063/1.3526674

Cited by 27 publications

(12 citation statements)

References 29 publications

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“…Multipactor has been well studied in rectangular waveguides [4], circular waveguides [5], coaxial lines [6], and accelerating cavities [7]. In accelerating cavities it has been established that an elliptical cavity geometry causes any electrons to travel towards the location of maximum magnetic field and minimum electric field at the top of the cavity equator.…”

Section: Introductionmentioning

confidence: 99%

Prediction of multipactor in the iris region of rf deflecting mode cavities

Burt,

Dexter

2011

Phys. Rev. ST Accel. Beams

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Multipactor is a major cause of field limitation in many superconducting rf cavities. Multipacting is a particular issue for deflecting mode cavities as the typical behavior is not well studied, understood, or parametrized. In this paper an approximate analytical model for the prediction of multipactor in the iris region of deflecting mode cavities is developed. This new but simple model yields a clear explanation on the broad range of rf field levels over which the multipactor can occur. The principle multipactors under investigation here are two-point multipactors associated with cyclotron motion in the cavity's rf magnetic field. The predictions from the model are compared to numerical simulations and good agreement is obtained. The results are also compared to experimental results previously reported by KEK and are also found in good agreement.

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Section: Introductionmentioning

confidence: 99%

Prediction of multipactor in the iris region of rf deflecting mode cavities

Burt,

Dexter

2011

Phys. Rev. ST Accel. Beams

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“…Power handling is a severe problem in many different applications, particularly in modern microwave circuits subject to strong microwave signals. Because of strong electromagnetic fields existing within the device, an irreversible failure may occur, due to corona or multipaction in vacuum or at low pressure, or due to microwave breakdown at atmospheric pressure.…”

Section: Introductionmentioning

confidence: 99%

Modeling and characterization of microwave breakdown at atmospheric pressure in OMUX filters

Frigui

Bila

Baillargeat

et al. 2013

Int J RF and Microwave Comp Aid Eng

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For output multiplexer (OMUX) filters placed in telecommunication satellites, microwave breakdown happens in an involuntary and undesirable way during tests at atmospheric pressure. This avalanche phenomenon is due to exponential growth of the electronic density caused by thermoelectronic emission under strong electromagnetic field magnitude. In this paper, our objective is to model and characterize experimentally multipole OMUX filters composed with coupled cavities. For identifying the element responsible for the breakdown, the electric field is calculated within each cavity and each iris. In order to characterize the breakdown phenomenon, we proposed an experimental test bench and we measured the power, both at the input and at the output of the filter. The article details the theoretical breakdown prediction and the experimental setup for such a structure. V C 2013Wiley Periodicals, Inc. Int J RF and Microwave CAE 24:46-54, 2014.

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“…978-1-4673-5977-1/13/$31.00 ©2013 IEEE A Particle-In-Cell code, similar to the one developed in [4] was developed to demonstrate the influence of the permanent magnetic field with 2 different values of gap width. The simulations were performed using Vaughan's approximation [5] and the value of the first cross-over point at around 30 eV like the sample 2 of the previous paragraph.…”

Section: Effect Of the Permanent Magnetic Field On The Multipactor Thmentioning

confidence: 99%