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

被引：1
|
作者：
Krivska, A. [1 ,2 ]
Ceccuzzi, S. [1 ]
Milanesio, D. [3 ]
Bobkov, V. [4 ]
Braun, F. [4 ]
Maggiora, R. [3 ]
Noterdaeme, J. -M. [4 ,5 ]
Tuccillo, A. A. [1 ]
机构：
[1] Assoc EURATOM ENEA Fus, CR Frascati, Rome, Italy
[2] Czech Tech Univ, Telecommun Engn Dept, Prague, Czech Republic
[3] Politecn Torino, Dept Elect, Turin, Italy
[4] EURATOM, Max Planck Inst Phys, Garching, Germany
[5] Univ Ghent, EESA Dept, Ghent, Belgium
来源：
RADIO FREQUENCY POWER IN PLASMAS: PROCEEDINGS OF THE 19TH TOPICAL CONFERENCE | 2011年 / 1406卷
关键词：
ASDEX Upgrade; ICRF; TOPICA; Rectified potential; HFSS;
D O I：
10.1063/1.3664936
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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 1D 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.
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