Development of a 130-mA, 75-kV high voltage column for high-intensity dc proton injectors

Conference · Mon Dec 01 04:00:00 EST 1997

OSTI ID:554858

Sherman, J; Arvin, A; Hansborough, L; Hodgkins, D; Meyer, E; Schneider, J D; Stevens, Jr, R R; Zaugg, T

A reliable high-voltage (HV) column has been developed for dc proton injectors with applications to high-intensity cw linacs. The HV column is coupled with a microwave-driven plasma generator to produce a 75-keV, 110-mA dc proton beam. Typical proton fraction from this source is 85--90%, requiring the HV column and accelerating electrodes to operate with a 130-mA hydrogen-ion beam current. A glow-discharge, which was caused by the ion source axial magnetic field, was initially observed in the HV column. This problem was solved by scaling the electron production processes, the magnetic field, and the HV column pressure into a favorable regime. A subsequent 168 hour reliability run on the 75-keV injector showed that the ion source (plasma generator and HV column) has >98% beam availability.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 554858
• Report Number(s): LA-UR--97-3282; CONF-970958--; ON: DE98001333
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM INJECTION
BEAM PRODUCTION
ION SOURCES
LINEAR ACCELERATORS
PROTON BEAMS