Author: Mauro, G.
Paper Title Page
TUB2 Plasma Heating and Innovative Microwave Launching in ECRIS: Models and Experiments 63
  • G. Torrisi, G. Castro, L. Celona, S. Gammino, D. Mascali, G. Mauro, M. Mazzaglia, E. Naselli, G. Sorbello
    INFN/LNS, Catania, Italy
  • A. Galatà
    INFN/LNL, Legnaro (PD), Italy
  • E. Naselli
    Catania University, Catania, Italy
  Microwave-to-plasma coupling in ECRIS has been based on the classic scheme of waveguide-to-cylindrical plasma cavity matching. Optimization has been often obtained by empirical adjustments leading to an oversimplified model, obtaining however satisfying performances. In order to overcome the ECR-heating paradigm, on-purpose design of launchers' setup adequate diagnostics have to be developed. This paper describes three-dimensional numerical simulations and Radio Frequency (RF) measurements of wave propagation in the microwave-heated magnetized plasmas of ion sources. Moreover, driven by an increasing demand of high frequency ECR ion sources, innovative ideas for the geometry for both the plasma chamber and the related RF launching system - in a plasma microwave absorption-oriented scenario are presented. Finally, the design of optimized launchers enabling single-pass power deposition, not a'ected by cavity walls effects, are described.  
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