| Citation: |
Qinghu YANG, Zhipeng CHEN, Zhigang HAO, Yangming ZHAO, Xin XU, Shuhao LI, Jie YANG, Wei YAN, Zhonghe JIANG, Zhongyong CHEN, Nengchao WANG, Zhoujun YANG, Yuan PAN, Yonghua DING, the J-TEXT Team. Design and first result of combined Langmuir-magnetic probe on J-TEXT tokamak[J]. Plasma Science and Technology, 2022, 24(5): 054005. DOI: 10.1088/2058-6272/ac41bf
|
In order to measure boundary electrostatic and magnetic fluctuations simultaneously, a combined Langmuir-magnetic probe (CLMP) has been designed and built on joint-Texas experimental tokamak. The probe consists of 8 graphite probe pins and a 3D magnetic probe, driven by a mechanical pneumatic device. By means of simulation, the shielding effect of the graphite sleeve on the magnetic fluctuation signal is explored, and the influence of the eddy current was reduced by cutting the graphite sleeve. In the experiment, it has been verified that the mutual inductance of electromagnetic signals can be ignored, and a 70–90 kHz electromagnetic mode is observed around the last closed magnetic surface. The establishment of CLMP provides data for the exploration of the coupling of electrostatic and magnetic fluctuations.
This work was supported by the National Key R&D Program of China (No. 2018YFE0309100) and National Natural Science Foundation of China (No. 51821005).
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