Electromagnetic simulations of the ASDEX Upgrade ICRF Antenna with the TOPICA code

Journal Article · Thu Nov 26 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3273712· OSTI ID:21335690

Krivska, A ^[1]; Milanesio, D ^[2]; Bobkov, V; Braun, F ^[3]; Noterdaeme, J -M ^[3]

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1. Institute of Plasma Physics ASCR, Euratom Association, Za Slovankou 3, Prague (Czech Republic)
2. Department of Electronics, Politecnico di Torino, Torino (Italy)
3. Max Planck-Institul fuer Plasmaphysik, Euratom Association, Garching (Germany)

Accurate and efficient simulation tools are necessary to optimize the ICRF antenna design for a set of operational conditions. The TOPICA code was developed for performance prediction and for the analysis of ICRF antenna systems in the presence of plasma, given realistic antenna geometries. Fully 3D antenna geometries can be adopted in TOPICA, just as in available commercial codes. But while those commercial codes cannot operate with a plasma loading, the TOPICA code correctly accounts for realistic plasma loading conditions, by means of the coupling with 1D FELICE code. This paper presents the evaluation of the electric current distribution on the structure, of the parallel electric field in the region between the straps and the plasma and the computation of sheaths driving RF potentials. Results of TOPICA simulations will help to optimize and re-design the ICRF ASDEX Upgrade antenna in order to reduce tungsten (W) sputtering attributed to the rectified sheath effect during ICRF operation.

• OSTI ID: 21335690
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1187; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
ASDEX TOKAMAK
CALCULATION METHODS
COMPUTERIZED SIMULATION
COUPLING
DESIGN
ELECTRIC CURRENTS
ELECTRIC FIELDS
F CODES
ICR HEATING
PLASMA
PLASMA SHEATH
PLASMA SIMULATION
PLASMA WAVES
POTENTIALS
T CODES
TUNGSTEN