Development of a direct extraction ion source for an FN Van de Graaff terminal

Conference · Tue Jan 01 04:00:00 EST 1974

OSTI ID:4009227

Roth, G W; Weitkamp, W G

A direct extraction duoplasmatron ion source was installed in the terminal of the negative injector of the University of Washington HVE three-stage model FN Van de Graaff accelerator. With this ion source, the injector produces hydrogen ion beams of higher intensity than was possible with the previous neutral negative configuration. It also produces intense heavy ion beams which can be more highly ionized by the tandem stripper foil, because the beam energy at the foil is about twice as high as was possible previously. The result is a significant increase in total accelerator beam energy for heavy ions. The installation minimizes volume, weight, and power consumption, while preserving ease of maintenance. The duoplasmatron is gas cooled, with a permanent magnet produced plasma constriction field, and a glass filament holder containing two filaments. Operating parameters are monitored using analog optical telemetry channels. The source performs satisfactorily and has been used for nuclear research. (auth)

• Research Organization: Univ. of Washington, Seattle; California Univ., Berkeley (USA). Lawrence Berkeley Lab.
• NSA Number: NSA-33-026945
• OSTI ID: 4009227
• Report Number(s): LBL--3399(Suppl.); CONF-741019--
• Country of Publication: United States
• Language: English

Related Subjects

*DUOPLASMATRONS-- PERFORMANCE
*VAN DE GRAAFF ACCELERATORS-- DUOPLASMATRONS
430301* --Particle Accelerators--Auxiliaries & Components-- Ion Sources
COOLING SYSTEMS
HEAVY IONS
HYDROGEN IONS 1 MINUS
ION BEAMS
N54300* --Particle Accelerators--Ion Sources
Injection & Extraction