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Related Experiment Videos

H(-) ion source developments at the SNS.

R F Welton1, M P Stockli, S N Murray

  • 1Oak Ridge National Laboratory, Oak Ridge, TN 37830-6471, USA.

The Review of Scientific Instruments
|March 5, 2008
PubMed
Summary
This summary is machine-generated.

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Advanced ion sources are being developed to meet the U.S. Spallation Neutron Source

Area of Science:

  • Physics
  • Accelerator Science
  • Plasma Physics

Background:

  • The U.S. Spallation Neutron Source (SNS) requires higher H(-) beam currents than conventional sources.
  • Future SNS operations and power upgrades necessitate advanced ion source technologies.

Purpose of the Study:

  • Investigate advanced ion source concepts for enhanced H(-) beam production.
  • Evaluate performance characteristics of novel radio-frequency (rf) plasma excitation methods.

Main Methods:

  • Testing an external antenna source with an Al(2)O(3) plasma chamber, multicusp magnetic field, Cs system, and plasma gun.
  • Presenting initial plasma measurements from a helicon-driven H(-) ion source.

Main Results:

  • Characterizing performance of an external antenna H(-) ion source.

Related Experiment Videos

  • Reporting first plasma data for a helicon-driven H(-) ion source.

    • Conclusions:

    • Advanced rf plasma excitation techniques show promise for meeting SNS beam current demands.
    • Further research into these novel ion sources is crucial for future accelerator upgrades.