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Name of experiment：application of high voltage amplifier in pulsed magnetic field analysis of energized hollow coil

Research direction：pulsed magnetic field analysis

Content of experiment：In this paper, the pulse magnetic field inside the energized hollow coil is analyzed. Firstly, the magnetic field at the midpoint of the coil's central axis is discussed under the excitation of a single frequency pulse signal, and then the variation rule of the magnetic field at the midpoint of the coil's central axis is analyzed under the excitation of frequency time-varying pulse signal. The coil magnetic field was measured by self-built measuring device, and the results of simulation analysis were compared and analyzed.

Test equipment：arbitrary waveform generator, high voltage amplifier (ATA-4014), current limiting resistance, Hall effect Gaosmeter, enamelled wire wound coil, oscilloscope

Experimental process：the combination of arbitrary waveform generator and high voltage amplifier can send out the same two excitation signals as the simulation model.

The excitation signal is connected to the circuit formed by the coil and the current limiting resistor in series. The Gauss meter probe is inserted into the midpoint of the central axis of the coil during the measurement process to measure the magnetic field change at the midpoint of the central axis of the coil. The experimental device is used to measure the magnetic induction intensity at the midpoint of the central axis of the coil under the excitation of a single frequency pulse signal, and the data collected by the oscilloscope.

Result of experiment：

1.Effect of excitation signal frequency on magnetic induction strength of coil.

2.Effect of outer diameter of coil on magnetic induction strength of coil；

3. Effect of outer diameter of coil on magnetic induction strength of coil.

Conclusion of experiment ：

Under the excitation of single frequency pulse signal, the magnetic induction intensity under different excitation signal frequencies and coil outer diameter obtained by simulation analysis is consistent with the value obtained by experimental measurement under corresponding conditions, and the variation rules of the two are consistent with the qualitative theoretical analysis. Through the simulation analysis method, the magnetic field inside the energized hollow coil is measured and analyzed accurately, which provides help and guidance for people to study the best action condition and action mechanism of pulsed magnetic field.

Parameters and appearance of ATA-4014：