Development of a Quick-Response Microwave Bolometer for the Stray Radiation Measurement in LHD

Development of a Quick-Response Microwave Bolometer for the Stray Radiation Measurement in LHD
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开发用于 LHD 杂散辐射测量的快速响应微波测辐射热计

DOI:
10.1109/irmmw-thz.2018.8510348
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发表时间:
2018
期刊:
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2018)
影响因子:
--
通讯作者:
Tsujimura Toru Ii
Tsujimura Toru Ii
中科院分区:
--
文献类型:
--
作者:
Igami Hiroe;Kubo Shin;Shimozuma Takashi;Yoshimura Yasuo;Takahashi Hiromi;Tsujimura Toru Ii

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研制了一种快速响应微波测辐射热计,用于测量铲运机ECRH过程中的杂散辐射。安装在ECRH天线端口的原型可以在电源输入开始后15 ms内做出响应。考虑到进入信号线的嗡嗡噪声和不规则的电压波动,可以检测到导致微波吸收器的温度升高超过0.1度并持续超过50 ms的杂散辐射。为了在50 ms内区分杂散辐射和电压波动,需要28 kW/m2的功率通量。
A quick-response microwave bolometer has been developed to measure the stray radiation during ECRH in LHD. A prototype installed in the ECRH antenna port can respond within 15 ms after the starting of the power input. With taking into account the humming noise and irregular voltage fluctuations coming into the signal line, the stray radiation that causes the temperature increase of the microwave absorber more than 0.1 degrees for more than 50 ms is detectable. The power flux of 28 kW/m2is required to discriminate the stray radiation from the voltage fluctuations within 50 ms.
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