Waveguide Coupler Kick to Beam Bunch and Current Dependency on SRF Cavities.

Wu, G. ; Wang, H. ; Reece, C. E. ; Rimmer, R. A.

Technical Information Center Oak Ridge Tennessee

关键词: Accelerators;    Beam currents;    Superconducting cavity resonators;    Design;    Dipoles;   

RP-ID  :  DE2008923379

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

JLAB SRF cavities employ waveguide type fundamental power couplers (FPC). The FPC design for the 7-cell upgrade cavities was optimized to minimize the dipole field kick. For continuous wave (CW) operation, the forwarding RF power will be at different magnitude to drive the different beam current and cavity gradient. This introduces some deviation from optimized FPC field for varying beam loading. This article analyzes the beam behavior both in centroid kick and head-tail kick under different beam loading conditions.