Ion acceleration tube

Abstract

The invention provides an ion acceleration tube, which is used for a static electricity high-voltage ion accelerator. The ion acceleration tube adopts modularized structural design; the acceleration voltage of each ion acceleration tube module is about 250kV; a certain number of ion acceleration modules are connected in series; the required ultra-high acceleration voltage can be obtained. The ion acceleration tube module comprises a strong focusing acceleration region and a space charge neutralization region, and is used for eliminating the self space charge effect of ion beams; the accelerated transmission of ion beams exceeding 1mA can be realized. Meanwhile, the ion acceleration tube module is also provided with a secondary electronic strong inhibition structure; when an ultra-high voltage acceleration system exceeding 5MV end voltage is formed, the occurrence of full voltage effect can be effectively prevented. The ion acceleration tube provided by the invention has the advantage that the ion beams with the end voltage exceeding 5MV and the beam current intensity exceeding 1mA can be obtained. The ion acceleration tube is suitable to be applied in the fields of ion injection, ion beam tumor treatment, nucleopore membrane production, neutron radiography and the like.

Description

technical field [0001] The invention belongs to the field of nuclear technology and application, and in particular relates to an ion accelerating tube. Background technique [0002] High-energy high-current ion beams have very broad application prospects in material modification, tumor treatment and physical experiments. At present, one way is to use radio frequency ion accelerators, which can provide high-current ion beams with energy exceeding 3MeV and beam intensity exceeding 1mA However, the technical difficulty is high, and the energy of the ion beam generated is large; another way is to use a high-voltage electrostatic ion accelerator, which has a small ion beam energy dispersion, high energy conversion efficiency of the whole machine, and low operating costs, which are suitable for commercial applications. , However, when the beam current intensity exceeds 1mA, the terminal voltage is relatively low, below 1MV. "Physical Design of 400 kV High-Current Neutron Generato...

AI Technical Summary

Problems solved by technology

"my country's High-voltage Accelerator Technology and Application Progress" (2004, the Seventh National Member Congress and Academic Report of the Particle Accelerator Society) disclosed high-voltage electrostatic ion accelerators with a terminal voltage exceeding 5MV, but the beam intensity is not high, at 300uA within

[0003] At present, there is a lack of high-voltage electrostatic ion accelerator tubes with a simple structure that can be used for terminal voltages exceeding 5MV and beam intensity exceeding 1mA.

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