Heavy ion source support gas mixing experiments

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7312456

Hudson, E D; Mallory, M L

Experiments on mixing an easily ionized support gas with the primary ion source gas have produced large beam enhancements for high charge state light ions (masses less than or equal to 20). In the Oak Ridge Isochronous Cyclotron (ORIC), the beam increase has been a factor of 5 or greater, depending on ion species and charge state. Approximately 0.1 cc/min of the easily ionized support gas (argon, krypton, or xenon) is supplied to the ion source through a separate gas line and the primary gas flow is reduced by approximately 30 percent. The proposed mechanism for increased intensity is as follows: The heavier support gas ionizes readily to a higher charge state, providing increased cathode heating. The increased heating permits a reduction in primary gas flow (lower pressure) and the subsequent beam increase.

• Research Organization: Oak Ridge National Lab., TN (USA); Michigan State Univ., East Lansing (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7312456
• Report Number(s): CONF-770313-12
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
ACCELERATORS
CATHODES
CHARGED PARTICLES
CYCLIC ACCELERATORS
CYCLOTRONS
ELECTRODES
FLUIDS
GASES
HEATING
HEAVY IONS
ION SOURCES
IONIZATION
IONS
ISOCHRONOUS CYCLOTRONS
MIXING
OPERATION
ORNL ISOCHRONOUS CYCLOTRON