Sep 20 – 24, 2021
America/Vancouver timezone

Sustainability Issues and Improvements in Long-Term Operations with Negative Hydrogen Ion Sources for Particle Accelerators

Sep 24, 2021, 7:25 AM
Invited Oral Negative ion sources


Robert Welton (Oak Ridge National Laboratory)


High brightness, negative hydrogen ion sources are used extensively in many scientific facilities operating worldwide. Negative hydrogen beams have become the preferred means of filling circular accelerators and storage rings. Several facilities now have long-term (>several years) experience with operating a variety of these sources (RF, filament, magnetron and penning) and have encountered, and in some cases solved, performance limiting issues. A representative list of such facilities includes, the US Spallation Neutron Source (SNS), Japan Proton Accelerator Complex (J-PARC), Rutherford Appleton Laboratory (RAL-ISIS), Los Alamos Neutron Science Center (LANSCE), Fermi National Accelerator Laboratory (FNAL), CERN LINAC-4 and numerous installations of D-Pace ion sources. This report summarizes key ion source sustainability issues encountered at these facilities and discusses how some of them are being addressed through recent source improvements.

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Primary author

Robert Welton (Oak Ridge National Laboratory)


Bollinger Dan (Spallation Neutron Source) Akira UENO (JAEA) Baoxi Han (ORNL) Morgan Dehnel (D-Pace, Inc.) Ilija Draganic (Los Alamos National Laboratory) Dan Faircloth (STFC) Jacques Lettry (CERN) Martin Stockli (Oak Ridge National Laboratory)

Presentation materials