The impact of microwave stray radiation to in-vessel diagnostic components
The impact of microwave stray radiation to in-vessel diagnostic components
复制标题
微波杂散辐射对血管内诊断部件的影响
DOI：
10.1063/1.4894022
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
W. Team
中科院分区：
文献类型：
--
作者：
M. Hirsch;H. Laqua;D. Hathiramani;J. Oosterbeek;J. Baldzuhn;C. Biedermann;H. Brand;A. Cardella;V. Erckmann;R. Jiménez;R. König;M. Köppen;S. Parquay;D. Zhang;W. Team
由未吸收的多个反射ECRH / ECCD光束产生的微波杂散辐射可能导致容器内微波吸收组件（如垫圈、波纹管、窗口、陶瓷和电缆绝缘）严重发热。鉴于温德尔斯坦-7 X的长脉冲操作的微波STray辐射发射设施，MISTRAL，允许测试在各向同性140 GHz微波辐射的环境中的容器内组件在功率负载高达50千瓦/平方米超过30分钟。结果表明，这两个，充分的微波屏蔽措施和冷却的所有组件是强制性的。如果容器内诊断组件的屏蔽/冷却措施不够有效，则可通过冷却结构上的专用吸收陶瓷涂层（局部）降低杂散辐射水平。
Microwave stray radiation resulting from unabsorbed multiple reflected ECRH / ECCD beams may cause severe heating of microwave absorbing in-vessel components such as gaskets, bellows, windows, ceramics and cable insulations. In view of long-pulse operation of WENDELSTEIN-7X the MIcrowave STray RAdiation Launch facility, MISTRAL, allows to test in-vessel components in the environment of isotropic 140 GHz microwave radiation at power load of up to 50 kW/m2 over 30 min. The results show that both, sufficient microwave shielding measures and cooling of all components are mandatory. If shielding/cooling measures of in-vessel diagnostic components are not efficient enough, the level of stray radiation may be (locally) reduced by dedicated absorbing ceramic coatings on cooled structures.