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

Journal Article · Sun Feb 01 04:00:00 EST 1998 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1148707· OSTI ID:591928

Sherman, J; Arvin, A; Hansborough, L; Hodgkins, D; Meyer, E; Schneider, J D; Stevens, Jr, R R; Thuot, M; Zaugg, T ^[1]

---

1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

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{percent}{endash}90{percent}, 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 h reliability run on the 75-keV injector showed that the ion source (plasma generator and HV column) has {gt}98{percent} beam availability. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 591928
• Report Number(s): CONF-980145--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 2 Vol. 69; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ELECTROSTATIC ACCELERATORS
GLOW DISCHARGES
ION SOURCES
LINEAR ACCELERATORS
PROTON BEAMS