Investigation of a 200GHz microklystron driven by a small-scaled pseudospark electron beam

Yin, H.; Cross, A. W.; He, Wenlong; Bowes, David; Ronald, K.; Phelps, A. D. R.; Protz, Jonathan M.; Verdiel, M.; Reynolds, Matthew S.; Schuhmann, Thomas G.; Chen, X.; Li, D.; Zhou, Jiaoyan

doi:10.1109/ivelec.2009.5193544

Cited by 3 publications

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“…An intense electron beam will be generated during the discharge process and can be extracted from the discharge chamber through a central axial aperture in the electrodes [1][2][3][4] . The pseudospark-sourced electron beam has attractive applications in many fields such as free electron masers 5 , extreme-ultraviolet 6 and soft x-ray 7 radiation sources, especially in driving THz radiation sources [8][9][10][11] due to its high current density and brightness.…”

Section: Introductionmentioning

confidence: 99%

Study of the beam profile and position instability of a post-accelerated pseudospark-sourced electron beam

et al. 2017

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This version is available at https://strathprints.strath.ac.uk/60089/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. A pseudospark-sourced electron beam is a promising candidate for driving a THz millimeter wave radiation source. However, the physics governing the electron beam density profile and the beam center deviation from the axis of the structure, which may be caused by the randomness in the pseudospark discharge process, remains still unclear especially for the high energy component of the pseudospark-sourced electron beam which is usually non-mono-energetic. It is essential to study the electron beam density profile and the beam center position distribution for optimizing the pseudospark discharge configuration. In this paper, images of some single-shot electron beam pulses have been captured using a 50 m thickness stopping copper foil and a phosphor screen coated with P47 scintillator to study the electron beam density profile and the beam center position distribution of the high energy component of the electron beam. The experiments have been carried out on two pseudospark discharge configurations with two different size hollow cathode cavities. The influence of the cathode aperture of each configuration has also been studied according to the beam images. Experimental results show that the beam profile of the high energy component has a Lorentzian distribution and is much smaller than the axial aperture size with the beam centers dispersing within a certain range around the axis of the discharge structure. The pseudospark-sourced electron beam with the larger hollow cathode cavity shows smaller full width at half maximum (FWHM) radius and a more concentrated beam center distribution.

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Section: Introductionmentioning

confidence: 99%

Study of the beam profile and position instability of a post-accelerated pseudospark-sourced electron beam

et al. 2017

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“…Their structure supports a sheet electron beam that requires a complex magnetic focusing systems and high fabrication costs. A design of conventional micro-klystron with a pseudo-spark cathode was presented [4].…”

Section: Introductionmentioning

confidence: 99%