Design study of a beta=0.09 high current superconducting half wave resonator

TL;DR

This paper presents the design and analysis of a high current superconducting half wave resonator operating at b0=0.09 and 162.5 MHz, aimed at supporting high-current proton and deuteron accelerators.

Contribution

It introduces a novel superconducting HWR design optimized for high current applications, with detailed electromagnetic, mechanical, and multipacting analyses.

Findings

Successful electromagnetic and mechanical design validation

Effective multipacting suppression strategies identified

Potential for high-current proton and deuteron acceleration

Abstract

There's presently a growing demand for high current proton and deuteron linear accelerators based on superconducting technology to better support various fields of science. A \b{eta}=0.09 162.5 MHz high current superconducting half wave resonator (HWR) has been designed at Peking University to accelerate 100 mA proton beam or 50 mA deuteron beam after the RFQ accelerating structure. The detailed electromagnetic design, multipacting simulation, mechanical analysis of the cavity will be given in this paper.