Y-structure inner rod spiral chamber of superconducting cyclotron

Abstract

The invention relates to a Y-structure inner rod spiral chamber of a superconducting cyclotron, wherein the Y-structure inner rod spiral chamber belongs to the researching field of a cyclotron. According to the cyclotron, through combining a single-inner-rod-structure spiral chamber with a double-inner-rod-structure spiral chamber, a new Y-structure inner rod spiral chamber model is formed, wherein one end of a front branch rod and one end of a back branch rod are connected with an acceleration plate electrode, and the other end of the front branch rod and the other end of the back branch rod are connected with a central single inner rod, wherein the front branch rod and the back branch rod have different radiuses and different lengths. According to the Y-structure inner rod spiral chamber provide by the invention, large-range adjustment for chamber resonance frequency and voltage distribution can be realized through adjusting the height of a central single inner rod and positions of the central single inner rod and the two branch rods, and fine adjustment on the chamber resonance chamber is finished through changing distance between a fine-turning capacitor and top end of a chamber housing. The Y-structure inner rod spiral chamber of the superconducting cyclotron has advantages of effectively settling a problem of defects of a chamber acceleration voltage distribution voltage, increasing average acceleration voltage of particles and facilitating leading-out of particles from the superconducting cyclotron.

Description

Technical field [0001] The invention specifically relates to a rod spiral cavity in a Y structure of a superconducting cyclotron, belonging to the technical field of superconducting cyclotrons. Background technique [0002] A cyclotron is a device that uses a magnetic field to make charged particles in a cyclotron motion, and is repeatedly accelerated by a high-frequency electric field in motion to increase the energy of the particles. Its basic structure includes a magnet system, a vacuum system, and a high-frequency system. Among them, the high-frequency system includes a high-frequency cavity, a transmitter, and a low-level system to provide energy for the accelerated particles. The high-frequency cavity is the main component that establishes the acceleration voltage for particle acceleration. In the superconducting cyclotron, since the magnet is designed in a spiral shape, the high-frequency resonant cavity must also be designed in a spiral shape in order to fit the magnet v...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the voltage distribution curve of the high-frequency cavity of the current superconducting cyclotron has a certain depression, and combine the advantages of the single inner rod structure helical cavity and the double inner rod structure helical cavity to propose a superconducting cyclotron New Design of Rod Spiral Cavity in Cyclotron Y Structure

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