Design, Manufacturing, Assembly, Testing, And Lessons Learned Of The Prototype 650 Mhz Couplers

TL;DR

This paper details the design, manufacturing, assembly, testing, and lessons learned from developing six high-power 650 MHz couplers for Fermilab's PIP-II project, highlighting improvements over previous designs.

Contribution

It presents a comprehensive overview of the coupler development process, including design optimizations and practical lessons learned during manufacturing and testing.

Findings

Successful integration of six couplers into the cryomodule

Design optimizations improved performance and reliability

Lessons learned enhanced future manufacturing and testing processes

Abstract

Six 650 MHz high-power couplers will be integrated into the prototype High Beta 650 MHz (HB650) cryomodule for the PIP-II project at Fermilab. The design of the coupler is described, including design optimizations from the previous generation. This paper then describes the coupler life-cycle, including manufacturing, assembly, testing, conditioning, and the lessons learned at each stage.