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Validity of closed periodic magnetic focusing for sheet electron beams

Phys. Plasmas 16, 113102 (2009); doi:10.1063/1.3257169

Published 3 November 2009

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Ding Zhao
Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China
Theoretical analyses and numerical calculations have demonstrated that a closed periodic cusped magnetic (PCM) field can effectively confine a sheet electron beam in two transverse directions (i.e., in the wide and narrow dimensions, simultaneously) for stable long distance transport in which the sizes of the beam cross section are set by referring to the present state of the art. Moreover, the method for matching the transverse magnetic focusing force and the inner space charge force in the wide dimension of the sheet electron beam is given, and the longitudinal periodic length and the cross sectional shape of the closed PCM focusing structure can be determined. Calculations also demonstrate that the optimum focusing state can be attained by adjusting the wide dimension on the transverse section of the closed PCM structure independently. The work presented in this paper indicates that the closed PCM structure is very promising for the confinement of the sheet electron beam, and it can be helpful for guiding practical engineering design. ©2009 American Institute of Physics
History: Received 22 April 2009; accepted 8 October 2009; published 3 November 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/113102/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.55.-s
    Magnetic plasma confinement and equilibrium
  • 41.85.Lc
    Particle beam focusing and bending magnets, wiggler magnets, and quadrupoles
  • 29.27.Eg
    Beam handling; beam transport in accelerators
  • YEAR: 2009

PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (12)
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