Novel arc-shaped bevel edge electrostatic deflection plate and particle accelerator chopper

Abstract

The invention provides a novel arc-shaped bevel edge electrostatic deflection plate and a particle accelerator chopper. The electrostatic deflection plate comprises a positive electrode plate and a negative electrode plate; the positive electrode plate and the negative electrode plate are both of an arc-shaped structure, wherein openings of the positive and negative electrode plates are oppositelyarranged, and the arc-shaped structures of the positive electrode plate and the negative electrode plate are arranged along the orthogonal direction of the motion of the incident particle beam; the arc degree of the electrode plate is 84-124 degrees; the arc degrees of the two electrode plates are the same; the arc-shaped positive electrode plate and the arc-shaped negative electrode plate rotaterelative to the horizontal plane by 0.5-2.5 degrees in the direction away from the particle beam movement space with the outlet of the incident particle beam as the rotation center to form an arc-shaped bevel edge deflection plate structure. And the rotation angles of the two electrode plates are the same, and after the particle beam flows through an electric field formed by the electrified arc-shaped bevel edge deflection plate structure, the deflection angle of the particle beam at the outlet is not less than 10 degrees. Under the condition of the same transverse size and the same central outlet size, the deflection effect of the particle beam is improved.

Description

technical field [0001] The invention belongs to the field of particle accelerators, in particular to a novel arc-shaped hypotenuse electrostatic deflection plate and a particle accelerator chopper. Background technique [0002] A chopper is one of the important components of a particle accelerator. The concept of chopper generally refers to the circuit structure used to adjust and limit the amplitude of electrical signals in the field of circuits; while the chopper in the field of accelerators refers to an electrical device that deflects the beam of charged particles to achieve the effect of beam cutoff. A chopper usually consists of a pair of electrostatic deflectors, a power supply, and a control system. The function of the electrostatic deflection plate is to provide a deflection voltage. When the chopper is not working, the deflection voltage is zero, and the charged particle beam can directly enter the next-level structure through the chopper. When the chopper is work...

AI Technical Summary

Problems solved by technology

However, the hypotenuse chopper can only produce a deflection of about 9 degrees under this condition, which is difficult to meet the design requirements

[0004] Therefore, it is necessary to design an electrostatic deflection plate that can achieve higher electric field strength under the same lateral size and center outlet size and solve the problem that the electric field strength of the existing design scheme cannot meet the design requirements under the condition of low duty cycle

Images