Cavity processing method for conduction cooling of radio frequency superconducting acceleration cavity

• Main Authors: LIN LIN, REN MANQIAN, HAO JIANKUI, WANG FANG, XU HANG, HUANG SENLIN, QUAN SHENGWEN
• Format: Patent
• Language: Chinese; English
• Published: 07.06.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WAVEGUIDES

The invention discloses a cavity processing method for conduction cooling of a radio frequency superconducting acceleration cavity, which comprises the following steps of: 1) depositing a Ni3Sn thin film on the inner surface of the superconducting cavity, and carrying out vertical test on the obtained Ni3Sn thin film cavity in liquid helium; (2) cleaning and vacuumizing the Ni3Sn thin film cavity, and filling protective gas into the Ni3Sn thin film cavity; 3) performing sand blasting treatment on the outer surface of the superconducting cavity to facilitate deposition of copper powder; 4) coating copper on the outer surface of the sand-blasted superconducting cavity by adopting a cold spraying process to form a cold spraying copper layer; (5) mechanically polishing the equator position of the sprayed superconducting cavity and the positions, close to the ellipsoid part, of the two sides of the beam tube; 6) sleeving and fixing an oxygen-free copper hoop ring matched with the position of the equator of the sup