Penning surface-plasma source scaling laws: Theory and practice

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6921768

Smith, Jr, H V; Allison, P; Sherman, J D

The small-angle source (SAS), 4X source, and 8X source are Penning surface-plasma sources (SPS) that produce high-current, high-brightness H[sup [minus]] ion beams for accelerator applications. It is desirable to achieve high duty-factor (df) operation, ultimately dc, with a Penning SPS. Two developments may make this goal possible. First, the H[sup [minus]] beam-emission scaling from the SAS (the 1X device) to the 4X source, and from the 4X source to the 8X source, is more favorable than the scaling laws predict Second, fringe-field separation of the e[sup [minus]] and H[sup [minus]] beams may make it possible to handle the power of the coextracted e[sup [minus]] beam, especially since a collar arrangement reduces the e[sup [minus]] loading. We compare our measured results with the predictions of the Penning SPS scaling laws. Particular attention is paid to the H[sup [minus]] current and temperature scaling as well as the power efficiency.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: DOD; Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6921768
• Report Number(s): LA-UR-92-3664; CONF-921145--1; ON: DE93003814
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
661220 -- Particle Beam Production & Handling
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BEAM EMITTANCE
BEAMS
HYDROGEN 1 MINUS BEAMS
ION BEAMS
ION SOURCES
PENNING ION SOURCES
PERFORMANCE
PLASMA
SCALING LAWS
Ta
Targets-- (1992-)