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

Conference · Mon Jan 01 04:00:00 EST 1990

DOI:https://doi.org/10.1109/27.108420· OSTI ID:6656383

Hanson, D L; Cuneo, M E; McKay, P F; Coats, R S; Rosenthal, S E; Chavez, J R; Stearns, W F; Heath, C E; Adams, W G; Ruscetti, J

We report on 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. Extraction of an annular ion beam along the diode axis for ion transport and focusing experiments requires that HELIA operate in positive (reverse) polarity, where each of the four cathode voltage adder sections contributes a group of electrons of unique energy and canonical angular momentum to electron flow in a magnetically insulated transmission line (MITL). We show that a number of requirements must be met for efficient production of a uniform high intensity ion beam. An appropriate insulating magnetic field geometry is needed to provide uniform insulation of the anode ion emitting surface and reduce direct electron losses from the cathode MITL region to the anode. A flat diode impedance profile with Z{sub D}

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• Sponsoring Organization: DOE/DP
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6656383
• Report Number(s): SAND-90-1003C; CONF-9009192--13; ON: DE90017042
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700208* -- Fusion Power Plant Technology-- Inertial Confinement Technology
ACCELERATORS
BEAM EXTRACTION
BEAMS
CONFINEMENT
EFFICIENCY
ELECTRIC IMPEDANCE
ICF DEVICES
IMPEDANCE
INERTIAL CONFINEMENT
ION BEAMS
ION SOURCES
LINEAR ACCELERATORS
PERFORMANCE
PLASMA CONFINEMENT
THERMONUCLEAR DEVICES