Negative ion based neutral beam injector for JT-60U
Conference
·
· AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:6644900
- Japan Atomic Energy Research Institute, Naka-machi, Naga-gun, Ibaraki-ken, 311-01 (Japan)
A 500 keV, 10 MW neutral beam injector is to be constructed in JT-60 Upgrade for the experiments of current drive and heating of heat density core plasmas. This is the first neutral beam injector in the world using negative ions as the primary ions. In the design, D[sup [minus]] ion beams of 44 A, 500 keV are produced by two ion sources (22 A/each ion source) and neutralized in a long gas neutralizer. The total system efficiency is about 40%. The ion source is a cesium-seeded multicusp volume source having a three stage electrostatic accelerator. To reduce the stripping loss of D[sup [minus]] ions in the accelerator, the ion source should be operated at a low pressure of 0.3 Pa with a current density of 13 mA/cm[sup 2]. The first test of the full-size negative ion source is scheduled from middle of 1993.
- OSTI ID:
- 6644900
- Report Number(s):
- CONF-921145--
- Conference Information:
- Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 287:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
661220* -- Particle Beam Production & Handling
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
AMP BEAM CURRENTS
ATOMIC BEAMS
BEAM CURRENTS
BEAM INJECTION
BEAM NEUTRALIZATION
BEAMS
CALCULATION METHODS
CHARGED PARTICLES
CURRENT DENSITY
CURRENTS
DESIGN
DEUTERIUM IONS
ELECTROSTATIC ACCELERATORS
ENERGY RANGE
ION BEAMS
ION SOURCES
IONS
KEV RANGE
KEV RANGE 100-1000
MONTE CARLO METHOD
NEUTRAL ATOM BEAM INJECTION
SIMULATION
Ta
Targets-- (1992-)
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700350 -- Plasma Production
Heating
Current Drive
& Interactions-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATORS
AMP BEAM CURRENTS
ATOMIC BEAMS
BEAM CURRENTS
BEAM INJECTION
BEAM NEUTRALIZATION
BEAMS
CALCULATION METHODS
CHARGED PARTICLES
CURRENT DENSITY
CURRENTS
DESIGN
DEUTERIUM IONS
ELECTROSTATIC ACCELERATORS
ENERGY RANGE
ION BEAMS
ION SOURCES
IONS
KEV RANGE
KEV RANGE 100-1000
MONTE CARLO METHOD
NEUTRAL ATOM BEAM INJECTION
SIMULATION
Ta
Targets-- (1992-)