Review of stripline beam impedance: application to the extraction kicker for the CLIC damping rings

8th International Particle Accelerator Conference

Belver-Aguilar, C.^1 ; Barnes, M.J.^1

CERN, Geneva, Switzerland^1

关键词: Beam extraction;    Computer simulation technology (CST);    Cylindrical beams;    Flat electrodes;    Operating modes;    Stripline kicker;    Synchrotron light source;    Transverse impedance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012074/pdf
DOI  :  10.1088/1742-6596/874/1/012074

来源: IOP

【 摘 要 】

The beam coupling impedance of the stripline kicker for beam extraction from the CLIC Damping Rings (DRs) has been studied analytically, numerically with Computer Simulation Technology (CST) Particle Studio (PS) and measured in the laboratory, although not all the results were previously understood. In order to have a better knowledge about the beam coupling impedance of a stripline kicker, a simple model has now been studied, with flat electrodes and a cylindrical beam pipe. From this preliminary study, a new approach for the dipolar component of the horizontal impedance has been derived, when considering both odd and even operating modes of the striplines. This new approach has been used to understand the differences found between the predicted transverse impedance and the two wires measurements carried out in the laboratory for the prototype CLIC DR striplines. Future tests of beam coupling impedance with beam in the ALBA Synchrotron Light Source will complete this study.