Particle Discrimination Experiment for Direct Energy Conversion

Journal Article · Fri Apr 15 04:00:00 EDT 2005 · Fusion Science and Technology

OSTI ID:20849908

Yasaka, Y ^[1]; Kiriyama, Y ^[1]; Yamamoto, S ^[1]; Takeno, H ^[1]; Ishikawa, M ^[2]

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1. Kobe University (Japan)
2. Institute Eng. Mech. and Systems, University of Tsukuba (Japan)

A direct energy conversion system designed for D-{sup 3}He fusion reactor based on a field reversed configuration employs a venetian-blind type converter for thermal ions to produce DC power and a traveling wave type converter for fusion protons to produce RF power. It is therefore necessary to separate, discriminate, and guide the particle species. For this purpose, a cusp magnetic field is proposed, in which the electrons are deflected and guided along the field line to the line cusp, while the ions pass through the point cusp. A small-scale experimental device was used to study the basic characteristics of discrimination of electrons and ions in the cusp magnetic field. Ions separated from electrons are guided to an ion collector, which is operated as a one-stage direct energy converter. The conversion efficiency was measured for cases with different values of mean and spread of ion energy. These experiments successfully demonstrate direct energy conversion from plasma beams using particle discrimination by a cusp magnetic field.

• OSTI ID: 20849908
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 3 Vol. 47; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
DEUTERIUM
DIRECT ENERGY CONVERSION
DIRECT ENERGY CONVERTERS
EFFICIENCY
ELECTRONS
FIELD-REVERSED THETA PINCH DEVICES
HELIUM 3
IONS
MAGNETIC FIELDS
PARTICLE DISCRIMINATION
PLASMA
PROTONS
THERMONUCLEAR REACTIONS
THERMONUCLEAR REACTORS
TRAVELLING WAVES