Accelerator Vacuum Windows: A Review of Past Research and a Strategy for the Development of a New Design for Improved Safety and Longevity for Particle Accelerators

TL;DR

This paper reviews past research on accelerator vacuum windows and proposes a new development strategy focusing on safety, longevity, cost-effectiveness, and emerging technologies like additive manufacturing.

Contribution

It provides a comprehensive review of vacuum window designs, materials, and failure modes, and introduces a strategic approach for developing improved, safer, and more durable vacuum windows using emerging technologies.

Findings

Analysis of materials and design techniques for vacuum windows.

Evaluation of failure modes and safety considerations.

Potential of additive manufacturing and ultrasonic welding for future vacuum window development.

Abstract

Vacuum window research continues at Fermilab and this paper will examine cost effective, consistent designs which can have a huge impact on accelerator laboratories in terms of safety and cost. Issues such as the design, materials, analysis, testing and fabrication are addressed, including beam scattering plots and materials cost-benefit analysis and examining different materials which can potentially be substitutes for beryllium. A previous research paper has examined current fabrication and design techniques and also failure modes at Fermi, and this paper examines previous research in addition to emerging technologies. Many different paths have been taken by HEP Laboratories throughout the world with varying success. The history of vacuum window development is extensive and not well defined, and a matrix of what research has already been done on materials and joint design for vacuum windows will be shown. This report finally includes a treatise for vacuum window technology and a view towards emerging designs and materials and discusses future advances of research such as fabrication techniques including additive manufacturing and ultrasonic welding. Further exploration into these would prove beneficial to developing vacuum windows that are safer and stronger while being more transparent to the beam.