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Review of Scientific Instruments / Volume 75 / Issue 2 / ARTICLES / PARTICLE SOURCES, OPTICS and ACCELERATION; PARTICLE DETECTORS

Rev. Sci. Instrum. 75, 355 (2004); http://dx.doi.org/10.1063/1.1642744 (5 pages)

Multicusp ion source with external rf antenna for production of protons

S. K. Hahto1, S. T. Hahto1, Q. Ji1, K. N. Leung1, S. Wilde1, E. L. Foley2, L. R. Grisham2, and F. M. Levinton3

1Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720
2Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543
3Nova Photonics, Inc., Princeton, New Jersey 08540

(Received 3 September 2003; accepted 26 October 2003)

Proton beams are needed in neutral-beam injection for diagnostic development of an internal magnetic field measurement. High proton fraction, low axial energy spread, current density in excess of 30 mA/cm2, and a parallel ion beam with cw operation are the requirements for the ion source/extraction system. A multicusp-type ion source with an external rf antenna was constructed at Lawrence Berkeley National Laboratory. A proton fraction of 85% and proton current density of 32 mA/cm2 were achieved at 1.8 kW of rf power. Plasma parameters were measured with a rf compensated Langmuir probe. © 2004 American Institute of Physics.

© 2004 American Institute of Physics

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KEYWORDS and PACS

Keywords

ion sources, proton production, proton effects, current density, plasma diagnostics, Langmuir probes

PACS

  • 07.77.Ka

    Charged-particle beam sources and detectors

  • 52.70.Ds

    Electric and magnetic measurements

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.1642744

PUBLICATION DATA

ISSN

0034-6748 (print)  
1089-7623 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    K. W. Ehlers and K. N. Leung, Rev. Sci. Instrum. 54, 1296 (1983)RSINAK000054000010001296000001.

    F. M. Levinton, Rev. Sci. Instrum. 70, 810 (1999)RSINAK000070000001000810000001.

    K. W. Ehlers and K. N. Leung, Rev. Sci. Instrum. 52, 1452 (1981)RSINAK000052000010001452000001.

    Y. Lee, R. A. Gough, W. B. Kunkel, K. N. Leung, L. T. Perkins, D. S. Pickard, L. Sun, J. Vujic, M. D. Williams, and D. Wutte, Rev. Sci. Instrum. 68, 1398 (1997)RSINAK000068000003001398000001.

    S. K. Hahto, S. T. Hahto, J. W. Kwan, K. N. Leung, and L. R. Grisham, Rev. Sci. Instrum. 74, 2987 (2003)RSINAK000074000006002987000001.


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