D. Wünderlich

Overlap of Plasma and Beam Properties in ITER-Relevant Negative Ion Sources

D. Wünderlich, J. Knaack, D. Mussini, A. Navarro et autres

Abstract The plasma in the negative hydrogen ion source for ITER NBI is generated in eight cylindrical RF drivers by inductive coupling. Four horizontal pairs of drivers are powered in series by one RF generator each. The plasma expands and overlaps into …

de, fr (code pays fourni par la source)

Comparison of the RF power coupling efficiency for 1.0 and 1.7 MHz at BATMAN Upgrade

A. Cherukulappurath, D. Yordanov, C. Wimmer, D. Wünderlich et autres

Abstract In the Negative ion-based Neutral Beam Injector (NNBI) sources for ITER, hydrogen/deuterium plasmas are generated by inductive coupling of RF power at 1.0 MHz. Experiments on the BATMAN Upgrade (BUG) prototype source and SPIDER ion source revealed a significant power loss …

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Investigations on symmetrizing the plasma properties in the expansion region of a large RF ion source via magnetic fields

D. Yordanov, C. Wimmer, D. Wünderlich, U. Fantz

Abstract A 2D RF self-consistent fluid plasma model is employed on the BATMAN Upgrade source for negative hydrogen ions to investigate the plasma inhomogeneity. An external magnetic filter field is applied in the vicinity of the extraction system for the suppression of …

de (code pays fourni par la source)

Modelling the spatial dynamics of Cs inside the BATMAN Upgrade source using the CsFlow3D code

D. Mussini, C. Wimmer, D. Wünderlich, U. Fantz

Abstract The Neutral Beam Injector (NBI) system for ITER relies on large sources for the production of negative hydrogen ions (H − or D − ). Negative ions are produced inside the ion source by plasma particle conversion on a low work-function …

de (code pays fourni par la source)

Spectroscopic measurements of hydrogen dissociation degree and H- production in resonant antenna-generated helicon plasmas

C. Marini, B. Duval, I. Furno, A. Howling et autres

ch, de, fr (code pays fourni par la source)