Neutral beamline with ion energy recovery based on magnetic blocking of electrons

Patent · Tue Sep 14 04:00:00 EDT 1982

OSTI ID:6153596

Stirling, W L

A neutral beamline generator with energy recovery of the full energy ion component of the beam based on magnetic blocking of electrons is provided. Ions from a positive ion source are accelerated to the desired beam energy from a slightly positive potential level with respect to ground through a neutralizer cell by means of a negative acceleration voltage. The unneutralized full-energy ion component of the beam exiting the neutralizer are retarded and slightly deflected and the electrons in the neutralizer are blocked by a magnetic field generated transverse to the beamline. An electron collector in the form of a coaxial cylinder surrounding and protruding axial a few centimeters beyond the neutralizer exit terminates the electrons which exit the neutralizer in an E X B drift to the collector when the collector is biased a few hundred volts positive with respect to the neutralizer voltage. The neutralizer is operated at the negative acceleration voltage, and the deflected full energy ions are decelerated and the charge collected at ground potential thereby expending none of their energy received from the acceleration power supply.

• Assignee: Dept. of Energy
• Patent Number(s): US 4349505
• OSTI ID: 6153596
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
BEAM INJECTION
CHANNELING
CONVERSION
DIRECT ENERGY CONVERSION
ELECTRONS
ELEMENTARY PARTICLES
ENERGY CONVERSION
FERMIONS
LEPTONS
MAGNETIC FIELDS
NEUTRAL ATOM BEAM INJECTION
NEUTRAL BEAM SOURCES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS