Surface plasma source with saddle antenna radio frequency plasma generator

V. Dudnikov; R. P. Johnson; S. Murray; T. Pennisi; C. Piller; M. Santana; M. Stockli; R. Welton

doi:10.1063/1.3672111

Surface plasma source with saddle antenna radio frequency plasma generator

V. Dudnikov, R. P. Johnson, S. Murray, T. Pennisi, C. Piller, M. Santana, M. Stockli, R. Welton

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A prototype RF H^- surface plasma source (SPS) with saddle (SA) RF antenna is developed which will provide better power efficiency for high pulsed and average current, higher brightness with longer lifetime and higher reliability. Several versions of new plasma generators with small AlN discharge chambers and different antennas and magnetic field configurations were tested in the plasma source test stand. A prototype SA SPS was installed in the Spallation Neutron Source (SNS) ion source test stand with a larger, normal-sized SNS AlN chamber that achieved unanalyzed peak currents of up to 67 mA with an apparent efficiency up to 1.6 mAkW. Control experiments with H ^- beam produced by SNS SPS with internal and external antennas were conducted. A new version of the RF triggering plasma gun has been designed. A saddle antenna SPS with water cooling is fabricated for high duty factor testing.

Original language	English
Article number	02A712
Journal	Review of Scientific Instruments
Volume	83
Issue number	2
DOIs	https://doi.org/10.1063/1.3672111
State	Published - Feb 2012

Funding

This work has been supported in part by U. S. Department of Energy (DOE) Contract No. DE-AC05-00OR22725 and by STTR (Grant No. DE-SC0002690).

Funders	Funder number
U.S. Department of Energy	DE-AC05-00OR22725
Small Business Technology Transfer	DE-SC0002690

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10.1063/1.3672111

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title = "Surface plasma source with saddle antenna radio frequency plasma generator",

abstract = "A prototype RF H- surface plasma source (SPS) with saddle (SA) RF antenna is developed which will provide better power efficiency for high pulsed and average current, higher brightness with longer lifetime and higher reliability. Several versions of new plasma generators with small AlN discharge chambers and different antennas and magnetic field configurations were tested in the plasma source test stand. A prototype SA SPS was installed in the Spallation Neutron Source (SNS) ion source test stand with a larger, normal-sized SNS AlN chamber that achieved unanalyzed peak currents of up to 67 mA with an apparent efficiency up to 1.6 mAkW. Control experiments with H - beam produced by SNS SPS with internal and external antennas were conducted. A new version of the RF triggering plasma gun has been designed. A saddle antenna SPS with water cooling is fabricated for high duty factor testing.",

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AU - Johnson, R. P.

AU - Murray, S.

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AU - Piller, C.

AU - Santana, M.

AU - Stockli, M.

AU - Welton, R.

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Surface plasma source with saddle antenna radio frequency plasma generator

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