Interaction of ICRF fields with the plasma boundary in AUG and JET and guidelines for antenna optimization
Interaction of ICRF fields with the plasma boundary in AUG and JET and guidelines for antenna optimization
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DOI：
10.1063/1.3273710
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发表时间：
2009-12
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影响因子：
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通讯作者：
V. Bobkov;R. Bilato;F. Braun;L. Colas;R. Dux;D. V. Eester;L. Giannone;M. Goniche;A. Herrmann;P. Jacquet;A. Kallenbach;A. Křivská;E. Lerche;M. Mayoral;D. Milanesio;I. Monakhov;H. W. Müller;R. Neu;J. Noterdaeme;T. Pütterich;V. Rohde;J. Contributors
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文献类型：
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作者：
V. Bobkov;R. Bilato;F. Braun;L. Colas;R. Dux;D. V. Eester;L. Giannone;M. Goniche;A. Herrmann;P. Jacquet;A. Kallenbach;A. Křivská;E. Lerche;M. Mayoral;D. Milanesio;I. Monakhov;H. W. Müller;R. Neu;J. Noterdaeme;T. Pütterich;V. Rohde;J. Contributors
ASDEX 升级版 (AUG) 上的 ICRF 期间的 W 溅射和 JET A2 天线隔片上的温升被认为与天线面向等离子体的组件和 E” 近场的等离子体条件有关。大的天线等离子体间隙、高的气体喷发和低的轻杂质含量有利于减少AUG中的W溅射。光谱测量的有效 W 溅射产额的空间分布清楚地表明天线盒处存在强 E” 场（“馈线场”），该场在天线带前面的场中占主导地位。由HFSS代码获得的E″场图证实了天线盒处E″场对AUG鞘层驱动射频电压形成的主导作用。大的天线等离子体间隙和低的气体喷发有利于降低 JET A2 天线的隔膜温度。假设隔膜温度与 HFSS 计算的鞘驱动射频电压之间存在线性关系，则温度随偶极子定相（00ππ、0ππ0 或 0π0π）的变化...
W sputtering during ICRF on ASDEX Upgrade (AUG) and temperature rise on JET A2 antenna septa are considered in connection with plasma conditions at the antenna plasma facing components and E‖ near‐fields. Large antenna‐plasma clearance, high gas puff and low light impurity content are favorable to reduce W sputtering in AUG. The spatial distribution of spectroscopically measured effective W sputtering yields clearly points to the existence of strong E‖ fields at the antenna box (“feeder fields”) which dominate over the fields in front of the antenna straps. The picture of E‖ fields, obtained by HFSS code, corroborates the dominant role of E‖ at the antenna box on the formation of sheath‐driving RF voltages for AUG. Large antenna‐plasma clearance and low gas puff are favorable to reduce septum temperature of JET A2 antennas. Assuming a linear relation between the septum temperature and the sheath driving RF voltage calculated by HFSS, the changes of the temperature with dipole phasing (00ππ, 0ππ0 or 0π0π) ...