Negative ion sources for neutral beam systems
نویسندگان
چکیده
منابع مشابه
Development of Multi-mega Watt Negative Ion Sources and Accelerators for Neutral Beam Injectors
High energy and high power negative ion sources and accelerators have been developed for neutral beam (NB) injectors of future fusion machines such as International Thermonuclear Experimental Reactor (ITER). Using a 5-stage electrostatic accelerator, negative ion beam has been successfully accelerated up to the energy of 1 MeV, which is the required energy for ITER. Powerful negative ion beams ...
متن کاملEffects of Operating Parameters on the Beam Species of Diii–d Neutral Beam Ion Sources
The DIII–D fusion science research facility employs positive-ion based neutral beam ion sources for plasma heating and current drive experiments. Ion species produced inside the arc chamber of an ion source determine the composition of the neutral beams injected into the plasma and in turn affect the energy deposition along the cross section of the plasma. Arc chamber design and operation schem...
متن کاملDemonstration of 500 keV beam acceleration on JT-60 negative-ion-based neutral beam injector
Hydrogen negative ion beams of 486 keV, 2.8A and 507 keV, 1A have been successfully produced in the JT-60U negative ion source with multi aperture, multi grid accelerator of three stages. This is the first accomplishment of the H beam acceleration up to 500 keV at high-current of > 1 A. These successful productions of the high-energy beams at high current have been achieved by overcoming a poor...
متن کاملAdvanced Negative Ion Beam Technology to Improve the System Efficiency of Neutral Beam Injectors
Technologies producing high current density (>20mA/cm2) negative ions at a low operating gas pressure (<0.3Pa) has been established. Reduction of the gas pressure is efficient to improve the acceleration efficiency of neutral beam injectors. Beam optics in a multi-aperture, multi-stage electrostatic accelerator has been studied using a 400keV negative ion source. It was found that the ion beam ...
متن کاملElectron Beam Ion Sources, Ion Optical Elements and Beam Diagnostics for Particle Accelerators
Electron Beam Ion Sources (EBISs) provide highly charged ions (HCIs) for a variety of investigations and applications, e.g. amongst others as injection source for particle accelerators. EBISs feature a lot of advantages which qualify them for accelerator injection, and which partly compensate for their comparatively low number of particles. DREEBIT GmbH provides a family of compact EBISs based ...
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ژورنال
عنوان ژورنال: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
سال: 1983
ISSN: 0734-2101,1520-8559
DOI: 10.1116/1.572165