Neutral beam injector for 475 keV MARS sloshing ions

Details Neutral beam injector for 475 keV MARS sloshing ions Neutral beam injector for 475 keV MARS sloshing ions

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984aipc..111..617g&link_type=abstract

AIP Conference Proceedings, Volume 111, pp. 617-640 (1984).

Physics

Particle Sources And Targets

Scientific paper

A neutral beam injector system which produces 5 MW of 475 keV D° neutrals continuously on target has been designed. The beamline is intended to produce the sloshing ion distribution required in the end plug region of the conceptual MARS tandem mirror commercial reactor. The injector design utilizes the LBL self-extraction negative ion source and Transverse Field Focusing (TFF) accelerator to generate a long, ribbon ion beam. A laser photodetachment neutralizer strips over 90% of the negative ions. Magnetic and neutron shield designs are included to exclude the fringe fields of the end plug and provide low activation by the neutron flux from the target plasma. The use of a TFF accelerator and photodetachment neutralizer produce a total system electrical efficiency of about 63% for this design.

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