Electromagnetic Simulations and Properties of the Fundamental Power Couplers for the SNS Superconducting Cavities
The Spallation Neutron Source (SNS) makes use of superconducting cavities for the acceleration of negative H ions in the main linac. Two types of 6-cell Niobium cavities are used in the superconducting portion of the linac: 33 Beta=0.61 cavities and 48 Beta=0.81 cavities. Each cavity is powered via a coaxial fundamental power coupler (FPC) of a simple yet robust design. The electromagnetic design of the main components of that coupler has been modeled and some of those properties have been measured experimentally. Modeling includes impedance matching of the window and of the waveguide to coaxial doorknow transition; coupling of the coupler fields to the cavity fields; and multipacting behavior of the coaxial line and window. Various aspects of design, simulation, and testing on the coupler and cavity are presented.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 783672
- Report Number(s):
- JLAB-ACT-01-13; DOE/ER/40150-1887; TRN: US0104054
- Resource Relation:
- Journal Volume: 2; Conference: PAC 2001, Chicago, IL (US), 06/18/2001--06/22/2001; Other Information: PBD: 1 Jun 2001
- Country of Publication:
- United States
- Language:
- English
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