Helix TWT inherent vibration characteristics analysis and reliability design

This paper reports a method of inherent vibration characteristics and reliability design, of a type of helix TWT structure. The natural frequencies and mode shapes are obtained as results, which provide technical support and the reference for the reliability design. From the stimulant results, weak vibration structure can be determined, According to the motion equation of beam model, the length size, material; structure stiffness can be carried out for optimization design. In this paper, the natural frequency of the structure of have been improved significantly by shortening the output window cantilever length and adding support sleeve design on the top of electron gun.