Title :
An RF input coupler system for the CEBAF energy upgrade cryomodule
Author :
Delayen, J.R. ; Doolittle, L.R. ; Hiatt, T. ; Hogan, J. ; Mammosser, J. ; Phillips, L. ; Preble, J. ; Schneider, W.J. ; Wu, G.
Author_Institution :
Jefferson Lab., Newport News, VA, USA
Abstract :
Long term plans for CEBAF at Jefferson Lab call for achieving 12 GeV in the middle of the next decade and 24 GeV after 2010. Thus an upgraded cryomodule to more than double the present voltage is under development. A new waveguide coupler system has been designed and prototypes are currently being developed. This coupler, unlike the original, has a nominal Qext of 2.1×107, reduced sensitivity of Qext to mechanical deformation, reduced field asymmetry within the beam envelope, freedom from window arcing with a single window at 300 K, and is capable of transmitting 6 kW CW both traveling wave and in full reflection
Keywords :
accelerator RF systems; cryogenics; electron accelerators; linear colliders; 12 GeV; CEBAF energy upgrade cryomodule; RF input coupler system; field asymmetry; mechanical deformation; waveguide coupler system; Bellows; Coaxial components; Delay; Optical coupling; Optical reflection; Prototypes; Radio frequency; Rectangular waveguides; Voltage; Waveguide transitions;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.795582
