HOM study and parameter calculation of the TESLA cavity model

• Published in: Chinese physics C Vol. 34; no. 1; pp. 99 - 102
• Main Author: 曾日华 SCHUH Marcel GERIGK Frank WEGNER Rolf 潘卫民 王光伟 刘熔
• Format: Journal Article
• Language: English
• Published: IOP Publishing 2010; Institute of High Energy Physics, CAS, Beijing 100049, China%CERN, CH-1211 Geneva 23, Switzerland
• Subjects: HFSS; 仿真工具; 声压级; 模型分析; 特斯拉; 脚本语言; 自动计算; 质子直线加速器; TESLA 9-cell cavity; higher order modes; superconducting proton linac; HFSS scripts
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/1/018

The Superconducting Proton Linac （SPL） is the project for a superconducting, high current Haccelerator at CERN. To find dangerous higher order modes （HOMs） in the SPL superconducting cavities, simulation and analysis for the cavity model using simulation tools are necessary. The existing TESLA 9-cell cavity geometry data have been used for the initial construction of the models in HFSS. Monopole, dipole and quadrupole modes have been obtained by applying different symmetry boundaries on various cavity models. In calculation, scripting language in HFSS was used to create scripts to automatically calculate the parameters of modes in these cavity models （these scripts are also available in other cavities with different cell numbers and geometric structures）. The results calculated automatically are then compared with the values given in the TESLA paper. The optimized cavity model with the minimum error will be taken as the base for further simulation of the SPL cavities.