ICRF antennas optimized for operation with a high-Z metallic wall in ASDEX Upgrade

被引：1
|
作者：
Zammuto, I. [1 ]
Krivska, A. [2 ,3 ]
Bobkov, V. [1 ]
Braun, F. [1 ]
Bilato, R. [1 ]
Noterdaeme, J. -M. [1 ,4 ]
机构：
[1] Max Planck Inst Plasma Phys, EURATOM Assoc, D-85748 Garching, Germany
[2] Inst Plasma Phys ASCR, EURATOM Assoc, Prague, Czech Republic
[3] Czech Tech Univ, Telecommun Engn Dept, CR-16635 Prague, Czech Republic
[4] Univ Ghent, EESA Dept, B-9000 Ghent, Belgium
来源：
FUSION ENGINEERING AND DESIGN | 2009年 / 84卷 / 7-11期
关键词：
ASDEX Upgrade; ICRF; Metallic wall; TOPICA; HFSS; Antenna design;
D O I：
10.1016/j.fusengdes.2008.12.061
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
High-Z materials are considered the best candidates for plasma facing components (PFCs) in future fusion devices, while ion cyclotron range of frequencies (ICRF) heating is a method of choice because of its flexibility, cost effectiveness, and plug-to-power efficiency. But high-Z materials and ICRF have been a difficult combination. ASDEX Upgrade (AUG) is pioneering the use of a tungsten (W) wall and in the next years it will prove (or disprove) the appropriateness of this combination for the future. This paper describes the optimization procedure for and the main features of a new proposed ICRF antenna for AUG specifically designed to improve the compatibility of ICRF with a high-Z metallic wall. The optimization criteria for a new design are based on a reduction of the parasitic parallel electric field responsible of the impurity production. The evolutionary design of the 2-strap antenna is compared with a redesigned 4-strap antenna embedded in the wall. Moreover, options and constraints on how to integrate a wider antenna in the present configuration of ASDEX Upgrade and its integration on the stabilizing wall are discussed. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：2031 / 2036
页数：6
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