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Generation of a large cross-section electron beam in the vacuum diode with rod current returns

Published online by Cambridge University Press:  19 September 2013

E.N. Abdullin ,
N.G. Ivanov ,
V.F. Losev  and
A.V. Morozov
E.N. Abdullin*
Affiliation:
Institute of High Current Electronics SB RAS, Tomsk, Russia
N.G. Ivanov
Affiliation:
Institute of High Current Electronics SB RAS, Tomsk, Russia
V.F. Losev
Affiliation:
Institute of High Current Electronics SB RAS, Tomsk, Russia Tomsk Polytechnic University, Tomsk, Russia
A.V. Morozov
Affiliation:
Institute of High Current Electronics SB RAS, Tomsk, Russia
*
Address correspondence and reprint requests to: E.N. Abdullin, Institute of High Current Electronics SB RAS, 2/3 Akademichesky Ave., Tomsk 634055, Russia. E-mail: abdullin@lhfe.hcei.tsc.ru
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Abstract

The results of the experimental studies of the high-power e-beam accelerator producing six radially convergent electron beams are presented. The studies are aimed to increase the energy of the electron beam transported through the foil into the gas-filled chamber by using the rod-shaped current returns in the diode at small inter-electrode gaps. Installation of these rod current returns shields the periphery regions of the diode from the current field in the central part thus reducing the field at the diode edge. The inter-electrode distance, the shape, and the sizes of the cathodes are chosen by taking into account the magnetic field reduction in the diode. It is shown that in such type of the diode the electrons impact the foil almost normally to its surface, and the electron beams enter the output windows completely. Such type of the diode allows increasing the efficiency of the electron beam energy transfer into the gas by 30%.

Keywords

Electron beam transportation into gas-filled chamberLarge cross-section electron beamMagnetic fieldRod current returnsVacuum diode
Type
Research Article
Information
Laser and Particle Beams , Volume 31 , Issue 4 , December 2013 , pp. 697 - 702
Copyright
Copyright © Cambridge University Press 2013 

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References

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