Experimental study of a stellatron accelerator using plasma start-up

Journal Article · Sat Dec 01 04:00:00 EST 1990 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859225· OSTI ID:6253639

Ishizuka, H ^[1]

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1. Department of Physics, University of California, Irvine, CA (USA)

Formation and acceleration of a high-current electron beam in a stellatron were studied. The apparatus had a 41 cm major radius and 4 cm minor radius torus, which was pumped down to 10{sup {minus}7} Torr. Plasma was injected into the torus and confined in a rising stellarator field. A runaway current of up to a few kiloamperes was induced when applying the betatron field. Beams of over 1 kA and with a current density of approximately 1 kA/cm{sup 2} were accelerated to several million electron volts with little loss. A 1 kA, 10 MeV beam was observed by initially forming a 2 kA beam. The loss was associated with negative-mass instability and high-mode orbital resonances.

• OSTI ID: 6253639
• Journal Information: Physics of Fluids B; (USA), Journal Name: Physics of Fluids B; (USA) Vol. 2:12; ISSN 0899-8221; ISSN PFBPE
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100* -- Particle Accelerators-- Design
Development
& Operation
ACCELERATION
ACCELERATORS
BEAMS
BETATRONS
CLOSED PLASMA DEVICES
CONFINEMENT
CYCLIC ACCELERATORS
ELECTRON BEAMS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HIGH VACUUM
INSTABILITY
LEPTON BEAMS
LEPTONS
MEV RANGE
NEGATIVE MASS INSTABILITY
PARTICLE BEAMS
PARTICLE LOSSES
PLASMA
PLASMA CONFINEMENT
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PRODUCTION
RESONANCE
RUNAWAY ELECTRONS
STELLARATORS
THERMONUCLEAR DEVICES
TORI