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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
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Optimizing the front end test stand high performance H- ion source at RAL.

D Faircloth1, S Lawrie, C Gabor

  • 1STFC, Rutherford Appleton Laboratory, Chilton, Oxfordshire OX11 0QX, United Kingdom. dan.faircloth@stfc.ac.uk

The Review of Scientific Instruments
|March 3, 2012
PubMed
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High-quality, chopped low-energy H(-) beams were produced using an optimized ion source. This advancement enables stable, long-term operation for advanced beam applications.

Area of Science:

  • Physics
  • Accelerator Science
  • Plasma Physics

Background:

  • The front-end test stand project aims to produce high-quality chopped low-energy H(-) beams.
  • The current beamline includes an ion source, low-energy beam transport, and diagnostics.

Purpose of the Study:

  • Optimize ion source performance for reliable H(-) beam production.
  • Demonstrate the capability of producing high-quality, chopped low-energy H(-) beams.

Main Methods:

  • Developed a new high-power pulsed discharge power supply for stable operation.
  • Modified the extraction power supply to operate up to 22 kV.
  • Utilized optical spectroscopy for source optimization.

Main Results:

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Last Updated: May 24, 2026

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Published on: May 3, 2019

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
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  • Achieved stable long-term operation at 50 Hz with a 60 A, 2.2 ms discharge pulse.
  • Reported source emittances and beam currents of 60 mA.
  • Successfully optimized ion source performance.

    • Conclusions:

    • The optimized ion source reliably produces high-quality, chopped low-energy H(-) beams.
    • The developed power supplies and optimization techniques support advanced beam applications.
    • The front-end test stand successfully demonstrated its primary aim.