研究目的
To discuss the development and implementation of gyrotron traveling-wave tubes (gyro-TWTs) with helically corrugated waveguides, focusing on the challenges encountered, the parameters achieved for specific applications, and future directions for improvement.
研究成果
The study concludes that gyro-TWTs with helically corrugated waveguides offer significant advantages for high-power, wideband amplification in the millimeter-wavelength band, despite some challenges. Future directions include increasing the gain ratio through sectioning of the interaction space and improving the electron beam quality to achieve wider amplification bands and higher output powers.
研究不足
The study identifies several limitations, including an insufficiently high gain, which necessitates the use of complex and expensive preamplifiers, and higher sensitivity to violations of the axial symmetry of the electron-optical system, leading to narrowing of the frequency amplification band and reduction of the output radiation power.
1：Experimental Design and Method Selection:
The study involves the development and testing of gyro-TWTs with helically corrugated waveguides, focusing on their wideband amplification capabilities and power output. Theoretical models and numerical simulations are used to design the electrodynamic systems and electron-optical systems.
2：Sample Selection and Data Sources:
Experimental prototypes of gyro-TWTs operating in the Ka band are developed and tested. Data on output power, amplification band, and gain are collected from these prototypes.
3：List of Experimental Equipment and Materials:
The study utilizes gyro-TWT prototypes with helically corrugated waveguides, high-voltage power supplies, magnetic systems, and microwave measurement equipment.
4：Experimental Procedures and Operational Workflow:
The gyro-TWTs are tested in both pulsed and continuous-wave regimes. Parameters such as accelerating voltage, beam current, magnetic field, and output power are measured. The amplification band and gain are characterized.
5：Data Analysis Methods:
The performance of the gyro-TWTs is analyzed based on the measured parameters. Theoretical models are compared with experimental results to identify limitations and areas for improvement.
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