RADI—A RF source size-scaling experiment towards the ITER neutral beam negative ion source
نویسندگان
چکیده
منابع مشابه
Caesium influence on plasma parameters and source performance during conditioning of the prototype ITER neutral beam injector negative ion source
Systematic Langmuir probe measurements were performed during the caesium (Cs) conditioning of the IPP prototype negative hydrogen ion source. Conditioning consists of slowly injecting caesium into the source in order to increase the extracted negative ion current and minimize the co-extraced electrons. This process usually takes several days. Measurements were taken near the plasma grid where t...
متن کاملModeling of the negative ion extraction from a hydrogen plasma source. Application to ITER Neutral Beam Injector
The development of a high performance negative ion (NI) source constitutes a crucial step in the construction of Neutral Beam Injector of the future fusion reactor ITER. NI source should deliver 60 A of H (or 40 A D), which is a technical and scientific challenge, and requires a deep understanding of the underlying physics of the source including the role of the magnetic filter. The present kno...
متن کاملDevelopment Strategy of RF Ion Source for Neutral Beam Injector in Fusion Devices
Large-area RF-driven ion source is being developed at Germany for the heating and current drive of ITER device [1, 2]. Negative hydrogen ion sources are major components of neutral beam injection systems in future large-scale fusion experiments such as ITER and DEMO. RF sources for the production of positive hydrogen ions have been successfully developed at IPP (Max-Planck-Institute for Plasma ...
متن کاملPhysical Performance Analysis And The Progress Of The Development Of The Negative Ion RF Source For The ITER NBI System
For heating and current drive the neutral beam injection system for ITER requires a 1 MeV deuterium beam for up to 1 h pulse length. In order to inject the required 17 MW the large area source (1.9m x 0.9m) has to deliver 40 A of negative ion current at the specified source pressure of 0.3 Pa. In 2007 the IPP RF driven negative hydrogen ion source was chosen as the new reference source for the ...
متن کاملNegative Ion Based Heating and Diagnostic Neutral Beams for ITER
To meet the requirements of the four operating and one start-up scenarios foreseen in the International Tokamak Experimental Reactor (ITER) a flexible heating mix will be required, which has to include a reliable contribution from neutral beams. The current baseline of ITER foresees 2 Heating Neutral Beam (HNB) systems based on negative ion technology, each operating at 1 MeV 40 A D ions, and e...
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ژورنال
عنوان ژورنال: Fusion Engineering and Design
سال: 2007
ISSN: 0920-3796
DOI: 10.1016/j.fusengdes.2007.03.041