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Superconducting accelerator, superconducting cavity for same and manufacturing method of superconducting accelerator

A superconducting cavity and accelerator technology, applied in cooling/ventilation/heating transformation, electrical components, accelerators, etc., can solve the problems of superconducting cavity gradient cannot be increased, liquid helium evaporation, quenching, etc., to achieve quench suppression The effect of the phenomenon

Inactive Publication Date: 2013-06-26
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the currently applied superconducting cavities, as the acceleration gradient increases, a quench phenomenon (quench) often occurs, that is, due to local defects on the inner surface of the superconducting cavity (which can be impurities, cracks, lattice defects, etc.) A large amount of heat is generated, and these heat cannot be quickly transferred to the liquid helium of the cooling system, resulting in an increase in the temperature of the defect site, and at the same time, the cavity wall in the superconducting state around the defect is transformed into a non-superconducting state, and the surrounding non-superconducting state The cavity wall of the superconducting cavity will generate a large amount of heat under the high-intensity electromagnetic field, so that this process continues in a vicious cycle, and finally the entire superconducting cavity is instantly transformed from a superconducting state to a non-superconducting state
Quenching will cause a large amount of evaporation of liquid helium, and the gradient of the superconducting cavity cannot be increased.

Method used

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  • Superconducting accelerator, superconducting cavity for same and manufacturing method of superconducting accelerator
  • Superconducting accelerator, superconducting cavity for same and manufacturing method of superconducting accelerator

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no. 1 approach

[0015] The applicant found that for the currently applied superconducting cavities, as the acceleration gradient increases, a quench phenomenon (quench) often occurs, that is, due to local defects on the inner surface of the superconducting cavity (which can be impurities, cracks, lattice defects, etc. ) generates a large amount of heat under high-intensity electromagnetic field, and the heat cannot be quickly transferred to the liquid helium in the cooling system, resulting in an increase in the temperature of the defect site, and at the same time, the cavity wall in the superconducting state around the defect is transformed into a non-superconducting state, and the surrounding The cavity wall in the non-superconducting state will generate a large amount of heat under the high-intensity electromagnetic field, which makes this process continue a vicious cycle, and finally causes the entire superconducting cavity to instantly change from a superconducting state to a non-supercond...

no. 2 approach

[0022] Such as figure 2 As shown, in this embodiment, the superconducting cavity 2 of the present invention includes an outer surface 20, which is a non-smooth surface, that is, the outer surface 20 of the superconducting cavity 2 is provided with a heat dissipation structure. In this embodiment, the heat dissipation structure is a heat dissipation device 22 , and the heat dissipation device 22 is directly attached to the outer surface 20 of the superconducting cavity 2 . The heat sink 22 is made of a material with good heat dissipation performance, such as niobium, aluminum, copper or a mixture of niobium, aluminum and copper, and the like. The heat dissipation device 22 includes a plurality of heat dissipation fins 220 through which the heat dissipation surface area of ​​the outer surface 20 of the superconducting cavity 2 can be effectively increased. The heat dissipation device 22 can effectively increase the heat dissipation surface area of ​​the outer surface 20 of the...

no. 3 approach

[0028] The difference between the preparation method of the superconducting cavity 1 in the above-mentioned first embodiment and the traditional superconducting cavity is the processing steps of the outer surface of the superconducting cavity 1, that is, the preparation method of the superconducting cavity 1 of the present invention is different from that of the traditional superconducting cavity. The cavity preparation method is different in that it includes the step of: performing groove or drilling on the outer surface 10 of the superconducting cavity 1 to form grooves 12 or depressions.

[0029] The specific process steps of processing the outer surface 10 of the superconducting cavity 1: 1. Groove or punch the outer surface of the half cavity before welding the half cavity; 2. After the processing is completed, it can be carried out according to the conventional superconducting cavity manufacturing process welding. Specifically, in the first step, since the niobium cavity...

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Abstract

The invention relates to a superconducting accelerator, a superconducting cavity for the same and a manufacturing method of the superconducting accelerator. A heat radiation structure is arranged on the outer surface of the superconducting cavity. The manufacturing method of the superconducting cavity includes steps that the outer surface of the superconducting cavity is grooved or drilled so as to form the heat radiation structure or welding heat radiation structure on the outer surface of the superconducting cavity. Quenching of the superconducting cavity can be effectively suppressed.

Description

technical field [0001] The present application relates to the field of accelerators, in particular to superconducting accelerators, superconducting cavities for superconducting accelerators and preparation methods thereof. Background technique [0002] Superconducting accelerators are the preferred components for R&D and application in the field of accelerators. The superconducting cavity is the core component in the superconducting accelerator, which is located in the superconducting accelerator cryostat and is used to accelerate the charged particle beam. When the superconducting cavity is running stably, there is a strong alternating electromagnetic field (standing wave) in the cavity, and its electric field strength can be represented by the acceleration gradient. For the currently applied superconducting cavities, as the acceleration gradient increases, a quench phenomenon (quench) often occurs, that is, due to local defects on the inner surface of the superconducting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H7/20H05K7/20B23P15/00
Inventor 刘振超
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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