Ion coupling efficiency for an extraction applied-B ion diode on the HELIA linear-induction adder in positive polarity

Author

Hanson, David L. ; Cuneo, Michael E. ; McKay, Paul F. ; Coats, Rebecca S. ; Rosenthal, Stephen E.

Author_Institution

Sandia Nat. Labs., Albuquerque, NM, USA

Volume

19

Issue

5

fYear

1991

fDate

10/1/1991 12:00:00 AM

Firstpage

831

Lastpage

839

Abstract

Initial experiments to investigate coupling of the four-stage HELIA linear-induction accelerator to a uniformly insulated applied-B ion diode in planar extraction geometry are reported. Results describing the efficient operation of an applied-B extraction ion diode coupled to the HELIA linear induction accelerator operated in positive polarity are reported. Operation of a close-coupled, undermatched, applied-B diode on HELIA was consistent with magnetically insulated transmission line (MITL) electron flow intermediate between locally emitted flow and generalized flow, rather than with full-gap flow. Peak ion coupling efficiencies of 60-70% and peak ion power levels of 0.3-0.4 TW have been achieved

Keywords

beam handling equipment; collective accelerators; diodes; ion accelerators; HELIA linear-induction adder; close coupled undermatched diode; electron flow; extraction applied-B ion diode; four-stage; ion coupling efficiencies; linear-induction accelerator; magnetically insulated transmission line; planar extraction geometry; positive polarity; Anodes; Diodes; Electrons; Geometrical optics; Geometry; Impedance; Insulation; Ion accelerators; Ion beams; Laboratories;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.108420

Filename

108420