Low beta spoke cavity multipacting analysis

TL;DR

This paper analyzes electron multipacting in low beta spoke superconducting cavities for ADS proton accelerators using CST and Track3P codes, comparing results with vertical test data to improve understanding and design optimization.

Contribution

It introduces a comparative analysis of multipacting simulation methods in low beta spoke cavities, enhancing accuracy and reliability in predicting multipacting phenomena.

Findings

Simulation results align with vertical test data.

Different codes show varying accuracy in multipacting prediction.

Analysis aids in cavity design optimization.

Abstract

The simulation and analysis for electron multipacting phenomenon in low {\beta} spoke superconducting cavity in ADS proton accelerator are proposed. Using both CST and Track3P codes, the electron multipacting calculation for {\beta} = 0.12 spoke superconducting cavity is implemented. The methods of multipacting calculation on both codes are studied and described. With the comparison between the calculation results and the cavity vertical test results, the accuracy and reliability of different code on calculating multipacting are analyzed. Multipacting calculation can help to understand the result of vertical test and also can help to do the optimation in cavity design.