Injection and capture of electrons in the UCI stellatron

Conference · Tue Oct 01 04:00:00 EDT 1985 · IEEE Trans. Nucl. Sci.; (United States)

OSTI ID:5898541

Ishizuka, H; Fisher, A; Leslie, G; Mandelbaum, B; Rostoker, N

An l=2 stellatron accelerator is under experimental study. The stellarator field has a strength of up to 10 kG and a rotational transform angle /chi/ about 0.1. Electrons are injected from either a thermionic emitter or a field-emission cathode placed inside the torus. Typically, a 20 kV, 2-4 ..mu.. s pulse is applied to the hot cathode which emits about 3 A. A 2 MeV, 200 A beam is formed due to betatron acceleration which immediately follows the injection. The injection voltage is raised to 60 kV with the cold cathode emitting about 30 A for about 0.4 ..mu.. s. A significant increase in beam current is not observed. A beam in excess of 500 A is generated by injecting plasma and electrons simultaneously at the beginning of the stellarator field and starting the betatron acceleration after the plasma has diffused throughout the torus.

• Research Organization: Department of Physics, University of California, Irvine, CA
• OSTI ID: 5898541
• Report Number(s): CONF-850504-
• Conference Information: Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-32:5
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302* -- Particle Accelerators-- Injection & Extraction Systems
ACCELERATOR FACILITIES
ACCELERATORS
AMP BEAM CURRENTS
BEAM CURRENTS
BEAM DYNAMICS
BEAM INJECTION
BEAMS
CAPTURE
CATHODES
CLOSED PLASMA DEVICES
CURRENTS
ELECTRODES
ELECTRON BEAM INJECTION
ELECTRON BEAMS
ENERGY RANGE
KEV RANGE
KEV RANGE 10-100
LEPTON BEAMS
PARTICLE BEAMS
STELLARATORS
THERMONUCLEAR DEVICES