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Method for plating triniobium stannide film on inner surface of pure niobium cavity and vacuum furnace

A vacuum furnace and inner surface technology, applied in the field of particle accelerators and superconductors, can solve the problems of poor thermal conductivity and cannot be used as a block, and achieve the effect of improving the Q value

Active Publication Date: 2020-04-28
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI +1
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Problems solved by technology

Therefore, the Q value of the niobium-sn-tin superconducting cavity is much higher than that of the pure niobium superconducting cavity (at 4.2K), and the application potential is huge; however, the niobium-sn-tin is brittle and has poor thermal conductivity, so it cannot be used as a bulk material

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  • Method for plating triniobium stannide film on inner surface of pure niobium cavity and vacuum furnace
  • Method for plating triniobium stannide film on inner surface of pure niobium cavity and vacuum furnace
  • Method for plating triniobium stannide film on inner surface of pure niobium cavity and vacuum furnace

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] The overall structure of the niobium-three-tin coating vacuum furnace of the present invention is as follows figure 1 As shown, the furnace body is a double-vacuum structure, including an outer vacuum system and an inner vacuum system. Among them, the vacuum outside the furnace is used to place the heater, temperature measuring probe, insulation shielding layer, and cooling water channel of the outer furnace shell, etc.; the vacuum inside the furnace is used to place the niobium cavity to be plated during the coating process. In addition, for the coating requirements of the superconducting cavity, a rotating lifting device is designed to connect the niobium cavity to be coated and the tin crucible, and the niobium cavity is cyclically rotated through the transmission mechanism. Finally, in order to accurately monitor and control the coating parameters...

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Abstract

The invention discloses a method for plating a triniobium stannide film on the inner surface of a pure niobium cavity and a vacuum furnace. The vacuum furnace is characterized by including a double vacuum structure consisting of an external vacuum system and an internal vacuum system, wherein the external vacuum system is internally provided with a heater heating the internal vacuum system and a temperature measuring probe used for measuring the temperature of a set area of the internal vacuum system; and the internal vacuum system is internally provided with a niobium cavity hoisting device,the rotating hoisting device is used for connecting the niobium cavity to be plated with a film and a stannum crucible, and the niobium cavity is rotated circularly through a transmission mechanism. Through the vacuum furnace, the pure niobium cavity can be internally plated with a layer of pure, completely-covering and evenly-distributed triniobium stannide film, and thus application of triniobium stannide to a superconducting cavity is achieved.

Description

technical field [0001] The invention relates to a method for coating a niobium-three-tin film on the inner surface of a pure niobium cavity and a vacuum furnace, which is used for coating a uniform layer of niobium-three-tin superconducting film on the inner surface of a pure niobium cavity, and belongs to the technical field of particle accelerators and superconductivity . Background technique [0002] A superconducting cavity is a microwave resonant cavity used in accelerators to accelerate charged particles. The current superconducting cavity is basically made of metal niobium. Compared with the room temperature cavity, its advantages are mainly: high acceleration gradient, low cavity loss, and large beam aperture. Therefore, it is widely used in major accelerator devices in the world. Superconducting cavities to accelerate various charged particles. [0003] There are two main indicators to measure the performance of a superconducting cavity: the acceleration gradient ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/24C23C14/50C23C14/54
CPCC23C14/16C23C14/24C23C14/505C23C14/54C23C14/544
Inventor 刘佰奇董超沙鹏翟纪元
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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