Design, Construction and Test Arrangement of a Fast-Cycling HTS Accelerator Magnet

TL;DR

This paper details the design, construction, and testing of a novel fast-cycling high-temperature superconductor (HTS) accelerator magnet capable of high current and rapid cycling, with potential applications in particle accelerators.

Contribution

It introduces a new HTS magnet design with a single-turn cable and discusses its construction, testing, and potential for high-frequency accelerator applications.

Findings

Achieved a 0.5 T magnetic field in testing with 24 kA at 20 Hz.

Demonstrated the magnet's capability to generate 1.75 T at 80 kA in ideal conditions.

Analyzed power losses for potential use in proton and muon accelerators.

Abstract

Design, fabrication and assembly of a novel fast-cycling accelerator magnet is presented. A short-sample magnet is powered with a single-turn HTS cable capable to carry 80 kA current at 20 K and generate 1.75 T field in a 40 mm magnet gap. The applied conventional leads and the power supply, however, allow only for a sin-wave 24 kA, 20 Hz current limiting test magnet to a B-field of 0.5 T and to a maximum cycling rate of 20 T/s. The critical aspects of the cable construction and the splicing connection to the power leads are described. Tentative power losses of the proposed HTS accelerator magnet in a possible application for proton and muon accelerators are presented.