140 GHz回旋管用金刚石输能窗研制*

doi:10.13385/j.cnki.vacuum.2024.03.18

Abstract

Abstract: In order to meet the requirements for the development of long-pulse high-power cyclotron oscillator, the preparation process and quality reliability of large-size (100 mm diameter slices) diamond window assemblies were studied. The sealing stress distribution is calculated by thermodynamic simulation software, and it is concluded that the window slices are subjected to the lowest stress when the sealing width is 3 mm with double-sided flat sealing structure. The diamond window assembly with airtight sealing is developed by combining Ti-Ag-Cu active brazing and electron beam high-energy welding. The large-size diamond window assembly has good dielectric properties, can withstand 550 ℃/48 h hot baking test, and the average tensile strength of the diamond-oxygen free copper sealing part reaches 118.2 MPa, which meets the requirements for the use of cyclotron tubes.

Key words: cyclotron, diamond, energy transfer window, active brazing material, high temperature brazing

CLC Number: TB756

LIU Lin, FANG You-wei, GAO Cha, WANG Jian, LUO Ji-run. Development of the Diamond Energy Transfer Window for 140 GHz Cyclotron[J].VACUUM, 2024, 61(3): 100-104.

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Development of the Diamond Energy Transfer Window for 140 GHz Cyclotron

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