Radio frequency superconducting resonant cavity based on high heat conduction material and high radio frequency performance superconducting material composite board and preparation method thereof

A technology of superconducting resonant cavity and superconducting material, applied in the field of radio frequency superconducting resonant cavity and its preparation

Active Publication Date: 2021-09-14
INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of the existing pure niobium superconducting cavity, the present invention proposes a radio frequency superconducting resonant cavity (composite superconducting cavity for short) based on a composite plate of high thermal conductivity material and high radio frequency performance superconducting material and its preparation method

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  • Radio frequency superconducting resonant cavity based on high heat conduction material and high radio frequency performance superconducting material composite board and preparation method thereof
  • Radio frequency superconducting resonant cavity based on high heat conduction material and high radio frequency performance superconducting material composite board and preparation method thereof

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Embodiment 1

[0028] Taking a 1.3GHz single-unit ellipsoidal cavity as an example, the high-performance double-layer material composite superconducting cavity and its preparation method involved in the present invention are described. The exploded view of the components of the 1.3GHz single-unit ellipsoid composite superconducting cavity is shown in figure 1 As shown, the cross-sectional view is shown as figure 2shown. Material A is selected as high-purity niobium with high radio-frequency superconductivity and RRR>300. High-purity niobium has low radio-frequency surface resistance, a critical temperature of 9.25K, and a thermodynamic critical magnetic field of 240mT; material B is TU0 with high thermal conductivity. Copper oxide has a thermal conductivity of about 600W / m·K at 4.2K, which is an order of magnitude higher than that of high-purity niobium. The following steps were used to develop a 1.3GHz single-unit ellipsoidal TU0 oxygen-free copper and high-purity niobium double-layer ma...

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Abstract

The invention discloses a preparation method of a radio frequency superconducting resonant cavity based on a high heat conduction material and high radio frequency performance superconducting material composite board The method comprises the following steps: (1) preparing the double-layer material A/B composite board; (2) forming cavity parts; (3) machining and manufacturing a flange; (4) completely removing a material B in a vacuum electron beam welding seam area; 5) cleaning the parts with ultrapure water, ultrasonically cleaning and airing; (6) carrying out acid pickling on the surface of a part material A by about 5-10 micrometers before electron beam welding; (7) cleaning the parts subjected to acid pickling with ultrapure water, ultrasonically cleaning and airing; 8) carrying out vacuum electron beam welding on parts of the whole cavity; and (9) covering the welding seam area of the whole cavity with a material B.

Description

technical field [0001] The invention belongs to the field of particle accelerator technology, radio frequency superconductivity and low temperature technology, and specifically relates to a radio frequency superconducting resonant cavity based on high thermal conductivity material and high radio frequency performance superconducting material composite plate and a preparation method thereof. Background technique [0002] The radio frequency superconducting resonant cavity (referred to as superconducting cavity) has the characteristics of high acceleration gradient, low power loss and small disturbance to the beam. It is widely used in large particle accelerators and is a high-energy, high-current continuous wave or high duty cycle mode. A core component of a particle accelerator. Its main function is to convert the energy stored in the electromagnetic field into the kinetic energy of charged particles. Generally based on the working electromagnetic field mode, superconductin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 何源皇世春杨自钦徐孟鑫张升学张生虎王志军郭浩李春龙
Owner INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
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