Magnetic mirror field confining plasma sealing window and sealing method thereof

A plasma and sealing window technology, applied in nuclear technology and application fields, can solve the problems of high power consumption of plasma sealing windows, limitation of accelerator system beam current, small aperture, etc.

Inactive Publication Date: 2012-06-27
PEKING UNIV
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  • Abstract
  • Description
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Problems solved by technology

But the current plasma sealing window has the following problems: 1) The aperture of the plasma sealing window is too small, the diameter is less t

Method used

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  • Magnetic mirror field confining plasma sealing window and sealing method thereof
  • Magnetic mirror field confining plasma sealing window and sealing method thereof

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Embodiment Construction

[0014] The implementation of the present invention will be described in detail through specific examples below in conjunction with the accompanying drawings.

[0015] Such as figure 1 As shown, the plasma sealing window adopting magnetic mirror field confinement of the present invention comprises: the plasma sealing window form, the form is made up of the band water-cooled copper plate 1 that is lined with insulation sheet 2 in the middle of a plurality of slices, each copper plate 1 and There are small holes with the same diameter of 2-10mm in the middle of the insulating sheet 2, and the small holes of the multi-piece copper plate and the insulating sheet form a plasma channel 3; one end of the plasma channel 3 is provided with a cathode 4 made of tungsten; 4 is installed on the cathode base 5 with water cooling pipes; the cathode base 5 is installed on the cavity 11 fixed on the window; the other end of the window is provided with an anode 6 made of copper; power is supplie...

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Abstract

The invention discloses a magnetic mirror field-confining plasma sealing window and a sealing method thereof. The plasma sealing window provided by the invention comprises a plasma sealing window body; a plasma channel is formed in the middle of the window body; a cathode is arranged at one end of the plasma channel and an anode is arranged at the other end of the window body; the cathode and the anode are connected with a sealing window power supply; a confining magnet is arranged outside the window body; and the plasma sealing window further comprises a magnet power supply for supplying power to the confining magnet, and a vacuum pump. According to the invention, the confining magnet is used for generating a magnetic mirror field to confine ions in the plasma sealing window; the structure of the magnetic mirror field is a magnetic field configuration with two higher sides and a lower middle part, so that plasmas in the plasma channel can be confined and only the ions and electrons which are higher than certain energy can leave the plasma channel. Therefore, the speed of the ions and the electrons in the plasma sealing window leaving from the plasma sealing window becomes slow, and the aims of increasing pressure difference of the plasma sealing window and reducing the power consumption of the plasma sealing window are achieved.

Description

technical field [0001] The invention belongs to the field of nuclear technology and application, and in particular relates to a plasma sealing window confined by a magnetic mirror field and a sealing method thereof. Background technique [0002] When the accelerator system is running, the entire system needs to be kept in a vacuum state. When the beam generated by the accelerator system is in use, it is necessary to extract the ion beam into the atmosphere in some cases, for example, non-vacuum electron beam welding, clean nuclear energy driven by the accelerator, etc., some require To do sample experiments in the atmosphere, it is necessary to effectively isolate the accelerator system from the atmosphere. The vacuum window is a component used to isolate the accelerator system from the atmospheric environment, and is set at the end of the accelerator system. Traditional vacuum windows generally use metal films. Vacuum windows made of metal films cannot be used in strong cu...

Claims

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Application Information

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IPC IPC(8): H05H1/14H05H7/14
Inventor 朱昆黄胜史本良陆元荣颜学庆王智
Owner PEKING UNIV
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