Imbalanced dual-inner-rod spiral high-frequency resonant cavity of superconductive cyclotron

Abstract

The invention relates to an imbalanced dual-inner-rod spiral high-frequency resonant cavity of a superconductive cyclotron, and belongs to the research field of the cyclotron. The imbalanced dual-inner-rod spiral high-frequency resonant cavity comprises a) an asymmetrical spiral accelerating electrode; b) accelerating gaps with asymmetrical angular widths on the two sides of the electrode; c) two inner conductors having different diameters and lengths and connected with the accelerating electrode; d) an asymmetrical spiral cavity shell; and e) fine-tuning capacitors on the top and bottom of the cavity. The high-frequency cavity structure provided by the invention can realize large-scale regulation of the cavity resonant frequency and voltage distribution by adjusting the heights and positions of the two inner rods, and the above-mentioned parameters can be subjected to fine tuning by changing the angular widths of the accelerating gap between the accelerating electrode and the spiral shell. By adoption of the imbalanced dual-inner-rod spiral high-frequency resonant cavity for satisfying the requirement of the high-frequency system cavity of the superconductive cyclotron, the voltage in the concave position of a voltage distribution curve of the high-frequency cavity is effectively improved; the overall voltage distribution of the cavity is improved; and the eduction of accelerating particles from the cyclotron can be facilitated.

Description

technical field [0001] The invention specifically relates to an unbalanced double-inner-rod helical high-frequency resonant cavity of a superconducting cyclotron, which belongs to the technical field of superconducting cyclotrons. Background technique [0002] The high-frequency system is an important part of the superconducting cyclotron project, in which the high-frequency resonant cavity plays a vital role in the high-frequency system, and the energy required for the movement of particles in the cyclotron is provided by the high-frequency resonant cavity. When the particles pass through the acceleration gap of the cavity, due to the potential difference between the two boundaries of the high-frequency resonant cavity, the solid particles gain energy and are accelerated. In a typical cyclotron, the voltage at the center of the accelerator is low and the voltage at the tail is high, which helps to reduce the number of sparks in the center of the accelerator and facilitates ...

AI Technical Summary

Problems solved by technology

The capacitance distribution of the high-frequency resonant cavity with a single inner rod structure is unbalanced, resulting in a large depression near the position of the inner rod in its voltage distribution curve, which is not conducive to the extraction of particles from the cyclotron

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