Negative ion beam formation, transport and acceleration

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:5153807

Alessi, J G

The BNL Neutral Beam Development Group is working on the development of negative ion based neutral beam systems, using high current density surface plasma sources of the magnetron and hollow cathode discharge (HCD) type. With the magnetron source, the plan is to transport a 2A D/sup -/ beam through a bending magnet before acceleration to 200 keV. In experiments with a pulsed magnetron, 0.4A of H/sup -/ was transported through a 90/sup 0/, n = 1, bending magnet with 80% transmission. With the lower operating pressure in the HCD source, close coupled acceleration will be applied. The MEQALAC, RFQ, and a dc accelerating scheme with periodic quadrupole focusing are considered for reaching higher energies. A preliminary experiment was performed with quadrupole beam transport and a 3.8 mA beam was transported through a series of twelve quadrupoles, with 3 mm apertures and a total length of 7.2 cm.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5153807
• Report Number(s): BNL-30330; CONF-811040-129; ON: DE82004702
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ANIONS
BEAM TRANSPORT
CATHODES
CHARGED PARTICLES
ELECTRODES
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
HOLLOW CATHODES
ION SOURCES
IONS
MAGNETRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
NEUTRAL BEAM SOURCES
RESEARCH PROGRAMS