Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code

A. Krivska, S. Ceccuzzi, D. Milanesio, V. Bobkov, F. Braun, R. Maggiora, J.-M. Noterdaeme, A.A. Tuccillo

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

During operation of the ASDEX Upgrade (AUG) ion cyclotron radio frequency (ICRF) system, Tungsten (W)-coated poloidal limiters and structures connected along magnetic field lines to the antenna can be sources of W, which is attributed to sputtering by ions accelerated in radio frequency (RF) sheaths. In order to analyze and optimize the ICRF antenna performance, accurate and efficient simulation tools are necessary. TOPICA code was developed for analysis of ICRF antenna systems with plasma loading conditions modeled with ID FELICE code. This paper presents an initial comparative analysis of two AUG ICRF antennas for a set of model plasma density profiles (with varying density gradient and antenna cut-off distance). The antennas are presently installed in AUG and differ in that one was partially optimized using HFSS code to reduce E∥near fields. Power transferred to plasma and sheath driving RF potentials are computed. © 2011 American Institute of Physics.
Original languageEnglish
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event19th Topical Conference on Radio Frequency Power in Plasmas - , United States
Duration: 1 Jan 2011 → …

Conference

Conference19th Topical Conference on Radio Frequency Power in Plasmas
CountryUnited States
Period1/1/11 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Krivska, A., Ceccuzzi, S., Milanesio, D., Bobkov, V., Braun, F., Maggiora, R., ... Tuccillo, A. A. (2011). Density profile sensitivity study of ASDEX Upgrade ICRF Antennas with the TOPICA code. Paper presented at 19th Topical Conference on Radio Frequency Power in Plasmas, United States. https://doi.org/10.1063/1.3664936