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

DE2008923379

Publication Date	2008
Personal Author	Wu, G.; Wang, H.; Reece, C. E.; Rimmer, R. A.
Page Count	3
Abstract	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.
Keywords	Accelerators Beam currents Superconducting cavity resonators Design Dipoles Waveguides CEBAF Accelerator Beam bunching
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Fermi National Accelerator Lab., Batavia, IL.; Department of Energy, Washington, DC.; Jefferson Lab., Newport News, VA.
Supplemental Notes	Prepared in cooperation with Jefferson Lab., Newport News, VA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200909
Contract Number	DE-AC05-06OR23177

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

Waveguide Coupler Kick to Beam Bunch and Current Dependency on SRF Cavities.
DE2008923379

Publication Date	2008
Personal Author	Wu, G.; Wang, H.; Reece, C. E.; Rimmer, R. A.
Page Count	3
Abstract	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.
Keywords	Accelerators Beam currents Superconducting cavity resonators Design Dipoles Waveguides CEBAF Accelerator Beam bunching
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Fermi National Accelerator Lab., Batavia, IL.; Department of Energy, Washington, DC.; Jefferson Lab., Newport News, VA.
Supplemental Notes	Prepared in cooperation with Jefferson Lab., Newport News, VA. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200909
Contract Number	DE-AC05-06OR23177