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

Volume

2

fYear

1999

fDate

1999

Firstpage

1462

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 Q_ext of 2.1×10⁷, reduced sensitivity of Q_ext 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1999. Proceedings of the 1999

Conference_Location

New York, NY

Print_ISBN

0-7803-5573-3

Type

conf

DOI

10.1109/PAC.1999.795582

Filename

795582