HOM study and parameter calculation of the TESLA cavity model

ZENG Ri-Hua; SCHUH Marcel; GERIGK Frank; WEGNER Rolf; PAN Wei-Min; WANG Guang-Wei; LIU Rong

doi:10.1088/1674-1137/34/1/018

Chinese Physics C> 2010, Vol. 34> Issue(1) : 99-102 DOI: 10.1088/1674-1137/34/1/018

HOM study and parameter calculation of the TESLA cavity model

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Abstract：
The Superconducting Proton Linac (SPL) is the project for a superconducting, high current H- accelerator 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.

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ZENG Ri-Hua, SCHUH Marcel, GERIGK Frank, WEGNER Rolf, PAN Wei-Min, WANG Guang-Wei and LIU Rong. HOM study and parameter calculation of the TESLA cavity model[J]. Chinese Physics C, 2010, 34(1): 99-102. doi: 10.1088/1674-1137/34/1/018

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Received: 2009-02-01
Revised: 2009-02-16

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沈阳化工大学材料科学与工程学院沈阳 110142

HOM study and parameter calculation of the TESLA cavity model

Corresponding author: ZENG Ri-Hua,

Received Date: 2009-02-01
Accepted Date: 2009-02-16
Available Online: 2010-01-05

Abstract:

The Superconducting Proton Linac (SPL) is the project for a superconducting, high current H- accelerator 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.