A method for beam window processing

By combining additive manufacturing with laser remelting, the secondary electron emission coefficient, surface roughness, and cooling performance of the beam window are optimized, solving the problems of long processing cycle, high cost, and poor performance of existing beam windows, and achieving simplified process and efficient electron cloud suppression effect.

CN115274016BActive Publication Date: 2026-06-16XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2022-08-03
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing methods for processing beam windows suffer from problems such as long manufacturing cycles, high costs, complicated processes, and poor secondary electronic and heat transfer properties, making it difficult to effectively suppress the formation of electron clouds.

⚗Method used

By combining additive manufacturing and laser remelting, an objective function is constructed by optimizing the secondary electron emission coefficient, surface roughness, cooling performance, and exhaust port area. A beam window is then prepared, and laser parameters are optimized using multiphysics simulation to obtain excellent secondary electron performance and heat transfer performance.

🎯Benefits of technology

This method achieves short processing cycle, low cost, and simple process for beam windows, effectively suppresses the formation of electron clouds, and improves the secondary electronic performance and heat transfer performance of beam windows.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a method for beam window processing, comprising: 1) establishing constraint conditions, taking secondary electron emission coefficient S, surface roughness R, cooling performance C, thermal deformation D and exhaust port area P a as optimization variables X={S, R, C, D, P}; taking beam window secondary electron performance, beam window mechanical characteristics and beam window vacuum performance as optimization targets, constructing a total objective function to form an optimization problem; 2) solving the optimization problem to obtain optimal secondary electron emission coefficient S, surface roughness R, cooling performance C, thermal deformation D and exhaust port area P a ; 3) according to optimal secondary electron emission coefficient S, surface roughness R, cooling performance C, thermal deformation D and exhaust port area P a The beam window is prepared by combining additive manufacturing and laser remelting, and the method has the characteristics of short manufacturing period, low cost, alleviating material oxidation, excellent secondary electron performance and heat transfer performance and simple process.
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