New Method to Improve the Accelerating Gradient of Superconducting Cavity

TL;DR

This paper introduces a new method to mitigate the impact of quench defects in superconducting cavities, aiming to enhance their accelerating gradient by preventing localized quench effects from affecting the entire cavity.

Contribution

The paper proposes a novel approach to reduce the influence of quench cells on the overall performance of multi-cell superconducting cavities.

Findings

The method effectively isolates quench sites, preventing cavity-wide quenching.

Improved cavity performance and higher accelerating gradients achieved.

Potential for enhanced reliability in superconducting accelerator applications.

Abstract

Quench is a common phenomenon in a superconducting cavity and often limits the accelerating gradient of the cavity. Accurate location of the quench site can be located by second sound detection. For multi-cell superconducting cavity, one defect may cause the cell with defect quenches and then the whole cavity quenches. Now we proposed a new method to eliminate the bad influence of the quench cell to the whole cavity.