A Frequency Conversion Asynchronous Cavity Structure

Abstract

The invention discloses a frequency conversion non-tuning cavity structure, which comprises: at least two basic coaxial resonant cavity units; the basic coaxial resonant cavity units are arranged side by side; each basic coaxial resonant cavity unit includes The first resonant cavity and the second resonant cavity, and the acceleration gap coaxially arranged between the first resonant cavity and the second resonant cavity; the first resonant cavity and the second resonant cavity are coaxially provided with beam Flow pipes, the beam pipes in the first resonant cavity and the beam pipes in the second resonant cavity are arranged at intervals in the acceleration gap to form the acceleration slots in the basic coaxial resonant cavity unit, which are nested outside the acceleration slots Ceramic insulating sleeves, the two ends of the insulating ceramic sleeves are respectively connected to the ends of the beam pipes on the corresponding sides; the beam pipes between two adjacent basic coaxial resonant cavity units are connected to each other; the external power source is connected to all Acceleration slot connections within the basic coaxial resonator unit.

Description

technical field [0001] The invention relates to a frequency conversion non-tuning cavity structure, in particular to a frequency conversion non-tuning cavity structure loaded with magnetic alloy material, and belongs to the technical field of synchrotron high-frequency loading cavity. Background technique [0002] Synchrotrons are the most widely used type of accelerators in the field of high-energy accelerators, and have a wide range of applications in aerospace, biology, materials, and particle therapy. As the most important part of the synchrotron, the high-frequency cavity is the most important place for vertical and horizontal operations such as capturing, accelerating, decelerating, rotating and compressing charged particles such as heavy ions and protons: the high-frequency cavity can accept the feed from the power source. After entering the high-frequency cavity, charged particles such as heavy ions and protons interact with the electric field at the acceleration gap...

AI Technical Summary

Problems solved by technology

It can be seen that the existing domestic magnetic alloy material-loaded variable-frequency non-tuned cavity structure has the following defects: ①The working voltage and acceleration gradient are low, and the frequency-converted non-tuned cavity loaded with magnetic alloy material cannot be reflected from the cavity voltage and acceleration gradient. Advantages of frequency conversion tuning cavity loaded with ferrite material

②With the increase of the required working voltage, if the current domestic magnetic alloy material is used to load the existing technology of frequency conversion non-tuning cavity, the magnetic alloy material to be loaded on the cavity and the longitudinal length of the cavity will increase exponentially. As a result, the electrical length of the cavity continues to increase, so that the voltage gap between the short-circuit end and the open-circuit end of the cavity is too large, and the acceleration gradient will not be significantly improved.

③As the required working voltage increases, the cavity power loss will increase rapidly with the square of the voltage, making the strong wind unable to meet the cooling requirements of the magnetic alloy material, and the temperature inside the material will quickly approach its own Curie temperature, resulting in The performance of the material decreases, which will lead to a vicious cycle of further increase in cavity power loss and further increase in material high-frequency loss

④The maximum size (outer diameter) of the magnetic alloy material does not exceed φ460mm, the performance of the magnetic alloy material is limited, and it is impossible to improve the cavity acceleration gradient and other indicators from the material performance

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