Development of H sup minus and D sup minus ion sources for plasma heating

The large size of future, and possibly present day, tokamaks requires high neutral atom beam energies for current drive and heating. These injectors must also have a high electrical efficiency and this can be achieved using negative ion sources to create the beam. These large tokamaks, such as ITER...

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Bibliographic Details
Main Author: Holmes, A.J.T.
Format: Conference Proceeding
Language:English
Subjects:
430301 - Particle Accelerators- Ion Sources
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700101 - Fusion Energy- Plasma Research- Confinement, Heating, & Production
ACCELERATORS
BEAM INJECTION
CHARGED PARTICLES
DESIGN
DEUTERIUM IONS
ENERGY RANGE
HEATING
HYDROGEN IONS
ION SOURCES
IONS
MAGNETIC FIELDS
MEV RANGE
MEV RANGE 01-10
MONTE CARLO METHOD
PARTICLE ACCELERATORS
PLASMA HEATING
PLASMA PRODUCTION
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
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Summary:The large size of future, and possibly present day, tokamaks requires high neutral atom beam energies for current drive and heating. These injectors must also have a high electrical efficiency and this can be achieved using negative ion sources to create the beam. These large tokamaks, such as ITER or NET require a neutral beam power of around 50--100 MW at beam energy of 1 MeV of D{sup 0}. This power is achieved by operating several sources in parallel, each one of which would extract a 28-A beam of D{sup {minus}} ions of which 57% are converted to D{sup 0} in a gas cell neutralizer and can be transmitted to the torus. The injector for one port consists of four units, each of which is a fully independent unit. This article describes the details of the injector unit which is based on volume plasma sources of D{sup {minus}} ions.
ISSN:0034-6748
1089-7623