Collective focusing ion accelerator. Final technical report, July 1, 1981-June 30, 1984

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5573230

Rostoker, N; Fisher, A

In the Collective Focusing Ion Accelerator, electrons are confined by an external magnetic field. The electrostatic field of the confined electrons form a Gabor lens which can guide and focus the ions. In a toroidal geometry, ions can be accelerated inductively as in a betatron, focused and held in their circular orbit by a series of Gabor lenses along the torus. The CFIA experiment consists of a glass torus 110 cm major diameter and 12 cm minor diameter. Sixteen magnetic mirror cells are distributed around the torus. Electrons are produced by 16 thermionic injectors (1 injector per cell). The electrons are trapped by a rising magnetic field and form the Gabor lenses. The inductive field was supplied in the CFIA by an iron core with approx.300 cm/sup 2/ cross section which could accelerate protons to more than 1 MeV. In order to accelerate ions they must be held by the lenses. The electron cloud was investigated in great detail. Early work had shown that the electron cloud oscillates in the radial direction in the mirror cells. These oscillations are very damaging to the focusing quality of the lens. The off-centering and the wobbling of the electrons was studied both in linear and toroidal geometry. The influence of the injector position, voltage, current and other parameters were investigated.

• Research Organization: California Univ., Irvine (USA). Dept. of Physics
• DOE Contract Number: AT03-81ER40043
• OSTI ID: 5573230
• Report Number(s): DOE/ER/40043-T1; ON: DE85014206
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100 -- Particle Accelerators-- Design
Development
& Operation
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
ACCELERATORS
BEAM DYNAMICS
BEAMS
COLLECTIVE ACCELERATORS
FOCUSING
MAGNETIC FIELDS
MAGNETIC MIRRORS
NUCLEON BEAMS
OPEN PLASMA DEVICES
PARTICLE BEAMS
PROTON BEAMS
THERMONUCLEAR DEVICES