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Mini penning ion source

A Penning ion source, miniature technology, applied in the direction of ion beam tube, discharge tube, electrical components, etc., can solve the problems of cathode and anode cylinder fire, large amount of hydrogen, affecting plasma, etc. Uniform, hydrogen distribution effect

Active Publication Date: 2019-05-31
CHINA INSTITUTE OF ATOMIC ENERGY
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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: since the hydrogen enters the anode cylinder through the hydrogen channel on one side of the anode cylinder, the distribution of hydrogen in the anode cylinder is uneven; More hydrogen, this will cause a large amount of hydrogen to be introduced, and it is easy to cause a fire between the cathode and the anode cylinder. At the same time, under long-term operation, it is easy to cause the insulation between the cathode and the anode cylinder to decrease. plasma generation

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] refer to figure 1 and figure 2 , is a kind of miniature Penning ion source disclosed by the present invention, including a casing 1, and the casing 1 is made of a tungsten-copper alloy material resistant to high temperature and high pressure and low outgassing. An anode cylinder 2 is fixedly connected to the casing 1, and the anode cylinder 2 is made of copper, and the anode cylinder 2 is located in the middle of the casing 1. Both ends of the casing 1 are fixedly connected with a cathode 3, and the cathode 3 is made of 100% pure tantalum with low outgassing. The casing 1 is located in the magnetic field, the direction of the magnetic field is parallel to the length direction of the anode cylinder 2, the magnetic field strength is 5000GS-6000GS, an insulating part 4 is arranged on the cathode 3, and the insulating part 4 includes a first insulating ...

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Abstract

The invention discloses a mini penning ion source, and relates to the field of superconductive cyclotrons. The mini penning ion source comprises a casing, an anode cylinder is arranged in the casing,cathodes are arranged in the casing and positioned in the two ends of the casing respectively, the anode cylinder is positioned between the cathodes, each cathode is provided with an insulating part,each insulating part comprises a first insulating block arranged on the cathode and insulated from the casing, a second insulation block arranged on the first insulating block and insulated from the anode cylinder, and a third insulating block arranged on the first insulating block and insulated from the casing, hydrogen channels are formed in the two ends of the anode cylinder respectively, lead-out slits are formed in the sides far from the hydrogen channels of the anode cylinder respectively, and the casing is provided with a gas transmission channel communicated with the hydrogen channels.The ion source tends not to influence generation of plasma.

Description

technical field [0001] The invention relates to the technical field of superconducting cyclotrons, in particular to a miniature Penning ion source. Background technique [0002] At present, a cyclotron is a device that uses a magnetic field and an electric field to make charged particles perform cyclotron motion, and is repeatedly accelerated by a high-frequency electric field during the motion. It is an important instrument in high-energy physics. Among them, the superconducting isochronous cyclotron (superconducting cyclotron A branch) is the core equipment of the current medical proton therapy accelerator. Medical proton therapy accelerators can treat tumors with protons and heavy ion rays in the microscopic world. It is the most advanced radiation therapy technology in the world today, and only a few developed countries have mastered and applied this technology. [0003] The existing plasma is generally generated by the Penning ion source, and the hydrogen gas enters th...

Claims

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Application Information

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IPC IPC(8): H01J27/02H01J27/04
Inventor 张贺贾先禄宋国芳王景峰
Owner CHINA INSTITUTE OF ATOMIC ENERGY
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