Open AccessDesign and construction of high-frequency magnetic probe system on the HL-2A tokamak
Author(s) -
Shaoyong Liang,
X.Q. Ji,
T.F. Sun,
Yuan Xu,
Jixi Lu,
B.S. Yuan,
Leilei Ren,
Q.W. Yang
Publication year - 2017
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.5000268
Subject(s) - tokamak , frequency response , inductance , electromagnetic coil , calibration , magnetohydrodynamic drive , materials science , bandwidth (computing) , capacitance , cascade , acoustics , system of measurement , nuclear magnetic resonance , physics , electronic engineering , electrical engineering , computer science , engineering , magnetohydrodynamics , magnetic field , plasma , voltage , computer network , electrode , quantum mechanics , chemical engineering , astronomy
A high-frequency magnetic probe system is designed, calibrated and constructed on the HL-2A tokamak. To investigate the factors which affect the probe frequency response, the inductance and capacitance in the probe system are analyzed using an equivalent circuit. Suitable sizes and turn number of the coil, and the length of transmission cable are optimized based on the theory and detailed test in the calibration. To deal with the frequency response limitation and bake-out, the ceramic grooved technique is used and the probe is wound with a bare copper wire. A cascade filter is manufactured with a suitable bandwidth as well as a good phase consistency between channels. The system has been used in the experiment to measure high frequency (≤300 kHz) magnetohydrodynamic fluctuations, which can meet the requirement of physical analysis on HL-2A
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