Intense relativistic electron beam injector system for tokamak current drive

Journal Article · Fri Apr 01 04:00:00 EST 1983 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.332823· OSTI ID:5574835

Bailey, V L; Creedon, J M; Ecker, B M; Helava, H I

We report experimental and theoretical studies of an intense relativistic electron beam (REB) injection system designed for tokamak current drive experiments. The injection system uses a standard high-voltage pulsed REB generator and a magnetically insulated transmission line (MITL) to drive an REB-accelerating diode in plasma. A series of preliminary experiments has been carried out to test the system by injecting REBs into a test chamber with preformed plasma and applied magnetic field. REBs were accelerated from two types of diodes: a conventional vacuum diode with foil anode, and a plasma diode, i.e., an REB cathode immersed in the plasma. REB current was in the range of 50 to 100 kA and REB particle energy ranged from 0.1 to 1.0 MeV. MITL power density exceeded 10 GW/cm/sup 2/. Performance of the injection system and REB transport properties is documented for plasma densities from 5 x 10/sup 12/ to 2 x 10/sup 14/ cm/sup -3/. Injection system data are compared with numerical calculations of the performance of the coupled system consisting of the generator, MITL, and diode.

• Research Organization: Physics International Company, San Leandro, California 94577
• DOE Contract Number: AM03-76SF00010
• OSTI ID: 5574835
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 54:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700205* -- Fusion Power Plant Technology-- Fuel
Heating
& Injection Systems
ACCELERATORS
ANODES
BEAM CURRENTS
BEAM INJECTION
CATHODES
CLOSED PLASMA DEVICES
CURRENT-DRIVE HEATING
CURRENTS
ELECTRIC HEATING
ELECTRODES
ELECTRON BEAM INJECTION
ELECTRON SOURCES
ENERGY RANGE
FOILS
HEATING
JOULE HEATING
KILO AMP BEAM CURRENTS
MAGNETIC FIELDS
MAGNETIC INSULATION
MATHEMATICAL MODELS
MEV RANGE
PARTICLE SOURCES
PERFORMANCE
PLASMA DENSITY
PLASMA HEATING
POWER DENSITY
PULSES
RADIATION SOURCES
RELATIVISTIC RANGE
RESISTANCE HEATING
THERMONUCLEAR DEVICES
TOKAMAK DEVICES