Steady State Test at High RF Voltage on Transmission System for Ion Cyclotron Heating
Steady State Test at High RF Voltage on Transmission System for Ion Cyclotron Heating
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离子回旋加热传输系统高射频电压稳态测试
DOI：
10.1585/jspf.75.842
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Yangping Zhao
中科院分区：
文献类型：
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作者：
R. Kumazawa;T. Mutoh;T. Seki;F. Shinpo;G. Nomura;T. Ido;T. Watari;J. Noterdaeme;Yangping Zhao
大螺旋装置（LHD）上的离子回旋频率范围（ICRF）加热的特点是其高功率（高达12MW）和稳态运行（30分钟）。LHD是一种螺旋装置（长半径为3.9 m，短半径为0.6 m），带有超导线圈绕组（l=2，m=10）。主要的物理目的是研究无电流和无破裂的稳态等离子体。ICRF加热的研究和开发是近年来进行的。研制了一种由短截线调谐器、陶瓷馈通和ICRF加热环形天线组成的高功率射频传输系统。射频传输系统经过测试，可承受58kV电压10秒，40kV电压30分钟。在等离子体负载电阻的情况下，RF电压对应于3.4MW和1.6MW的发射RF功率能力。此外，预匹配短截线调谐器在降低RF电压方面非常有效。减少率被证实为三分之一，这导致更高的ICRF注入效率，因为减少了传输系统中的RF功率损耗。此外，在选择RF脉冲长度、重复频率和RF电压方面，找到了有效进行RF天线老化的适当程序。
Ion Cyclotron Range of Frequency (ICRF) heating on Large Helical Device (LHD) is characterized by its high power (up to 12MW) and by steady state operation (30 minutes). The LHD is a helical device (with a major radius of 3.9 m and a minor radius of 0.6m) with super-conducting coil windings (l=2, m=10). The main physical purpose is to investigate currentless and disruption-free steady state plasmas. Research and development for ICRF heating have been carried out in recent years. A high RF power transmission system has been developed, which consists of stub tuners, ceramic feed-through and ICRF heating loop antenna. The RF transmission system was tested and withstood 58kV for 10 seconds and 40kV for 30 minutes. The RF voltage corresponds in the case of a plasma loading resistance, 5Ω to a transmitted RF power capability of 3.4MW and 1.6MW. In addition, a pre-matching stub tuner was very effective in reducing the RF voltage. The reduction rate was confirmed to be one third, which leads to a higher ICRF injection efficiency because of reduction of RF power loss in the transmission system. Furthermore a proper procedure to effectively carry out aging of the RF antenna was found in terms of selecting the RF pulse length, repetition rate and RF voltage.
O.Motojima：《超导大型螺旋装置的工程设计研究》核聚变。
DOI：
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发表时间：
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