High-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics

A technology for measuring radio frequency and diagnostic systems, applied to electrical components, plasma, etc., can solve problems such as lack of ion cyclotron characteristics, and achieve the effects of easy implementation, simple theory and structure, and low price

Active Publication Date: 2018-04-10
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology

At present, we have been able to monitor the plasma density, temperature, potential and other parameters well at the plasma boundary, but we lack the necessary understanding of the characteri

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  • High-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics
  • High-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics
  • High-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics

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Embodiment Construction

[0017] Such as figure 1 As shown, a high-frequency magnetic probe diagnostic system for measuring the characteristics of radio frequency waves includes a high-frequency magnetic probe 1, a vacuum coaxial electrode 2, a high vacuum coaxial line 3, a filter 4, and a power divider 5. Wave detector 6, phase detector 7, data acquisition and processing module 8 and computer 9, the output end of high-frequency magnetic probe 1 is connected to vacuum coaxial electrode 2 through high vacuum coaxial line 3, and vacuum coaxial electrode 2 passes through The DC blocker 10 is connected to the filter 4, the filter 4 is connected to the input end of the power divider 5, one output end of the power divider 5 is connected to the wave detector 6, and the other two output ends of the power divider 5 are connected to the phase detector 7 , the output ends of the detector 6 and the phase detector 7 are connected to the input end of the data acquisition and processing module 8, and the output end o...

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Abstract

The invention discloses a high-frequency magnetic probe diagnosis system for measuring radio frequency wave characteristics. The measuring system comprises a vacuum coaxial electrode, a high-frequencymagnetic probe, a power divider, a detector, a phase discriminator and a signal acquisition system, the vacuum coaxial electrode is used for transmitting radio frequency signals from the Tokamak to the outside of the Tokamak; the high-frequency magnetic probe is used for coupling the radio-frequency signals; the power divider is used for distributing the voltage probe and current probe signals into two paths with equal amplitude and equal phase; the detector is used for detecting the peak-to-peak value of the voltage probe and current probe radio frequency signals, and the result is output bya direct-current signal; the phase discriminator detects the phase difference between the voltage probe and current probe signals, and the result is output by a direct-current signal. The signal acquisition system stores the collected voltage signals to a computer.

Description

technical field [0001] The invention relates to the technical field of measuring the characteristics of the ion cyclotron wave itself near the ion cyclotron antenna, in particular to a high-frequency magnetic probe diagnostic system for measuring the characteristics of radio frequency waves. Background technique [0002] The ion cyclotron wave auxiliary heating system is the main auxiliary heating system in most tokamaks. The frequency range of the ion cyclotron wave in the tokama is roughly 20-80MHz. In EAST, the operating frequency range is currently 25-70MHz. High-frequency electromagnetic waves are coupled into the plasma through the antenna to heat the plasma. ICRF is mainly electromagnetic wave fast wave heating, but the emergence of slow wave is inevitable, so the measurement boundary and the slow wave ratio are particularly important, which can play a very important role in optimizing the antenna and improving the coupling of radio frequency waves. We know that th...

Claims

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Application Information

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IPC IPC(8): H05H1/00
CPCH05H1/0081H05H1/0087
Inventor 刘鲁南赵燕平张新军秦成明毛玉周袁帅王健华
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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