Speaker
Description
This paper presents the design and simulation of a high-efficiency 10 MW RF power source including the complete electron gun, electromagnet focusing system, RF interaction structure and output window. At an accelerating voltage of 115 kV, the designed electron gun produces a total space-charge-limited beam current of 132 A while maintaining an average cathode loading below 3.36 A/cm², which is suitable for safe and efficient operation. The calculated maximum surface electric field in the beam optics region remains below 5.8 kV/mm, while the electric field at the high-voltage ceramic seal is limited to 1.17 kV/mm. These values indicate that the structure operates within acceptable electrical stress limits, thereby reducing the risk of breakdown and improving long-term device reliability in 2D and 3D software's. The static beam analysis shows that the electron beam, with an average beam radius of 5 mm, is successfully focused and transported to the interaction cavity.The beam ripple is maintained at less than 5%.Beam dynamics analyses were conducted using 1D AJDISK, 2D KLYC, 2.5D EMSYS, and 3D CST simulation tools, which predicted efficiencies of 75%, 74%, 72%, and 72%, respectively.
Funding Agency
IHEP
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