Application Cases

Experiment Name: Application of Power Amplifier in Research on High-Frequency Pulse Emission Characteristics of CNT Cold Cathode X-ray Source

Research Direction: X-ray communication, carbon nanotube X-ray source, high-frequency electron emission, pulse source

Experimental Content: Study of electron emission characteristics of field emission cathode structures, testing of X-ray communication performance and reliability of field emission cathodes, and pulse emission characteristics of carbon nanotube cold cathode X-ray sources.

Test Objective: To obtain the characteristic relationship curves of pulse emission from carbon nanotube cold cathode X-ray sources and the factors affecting communication performance.

Testing Equipment: ATA-2022H power amplifier, anode power supply, mains power supply, cathode pulse power supply, LYSO X-ray detector, oscilloscope

Experimental Procedure:
According to the experimental test requirements, a dynamic vacuum test platform was built. In this setup, the ATA-2022H device was used as the cathode pulse power supply. Its purpose was to provide an electric potential to the field emission cathode and, under the action of the gate voltage, enable the field emission cathode to emit an electron beam in pulses. Based on the performance of the ATA-2022H, it can achieve a pulse output of approximately 1 MHz.

The actual experimental system is shown in the figure. The ATA-2022H is device 4. In the center is the dynamic vacuum system.

Test Results:
From the amplitude-frequency characteristic response curve, within the 1 MHz bandwidth of the ATA-2022H voltage amplifier, the output waveform of the device meets the experimental requirements; the amplitude and shape do not become distorted. At frequencies above 1 MHz, the output waveform exhibits distortion. Therefore, the test results indicate that the maximum amplitude-frequency response of the system is 1 MHz, which is limited by the performance of the ATA-2022H.

Experiments on X-ray communication performance demonstrated that using the ATA-2022H enables X-ray communication with a field emission cold cathode. In the field of X-ray communication, this is the first time X-ray communication has been experimentally realized using a field emission cold cathode X-ray source. The communication waveforms are distinctly distinguishable and can meet the requirements of X-ray communication under certain conditions. Benefiting from the excellent performance of the ATA-2022H device, high-speed X-ray communication was ultimately achieved.

Figure: Specifications of the ATA-2022B High-Voltage Amplifier