Transverse effects of a waveguide coupling slot
High-power operation of rf cavities may require that the waveguide supplying energy to the system be coupled to the cavity with a large coupling slot. It is a concern that this coupling slot may be so large that appreciable asymmetry will exist in the fields of the fundamental mode and transverse effects will be introduced on the beam. Computation of these effects is complicated by the facts that the fundamental mode frequency must propagate in the waveguide and resonant cavity codes cannot handle energy transfer across the boundaries of the problem. We have successfully computed these effects using 3-D computer codes in MAFIA, both in the frequency and time domains. This paper will report the computed results showing good agreement with experimental measurements and indicating that the transverse effects can be compensated. The results include mode distortions and transverse forces. The methods of calculation will also be described. 5 refs., 2 figs.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6772886
- Report Number(s):
- LA-UR-88-3251; CONF-881049-12; ON: DE89000340
- Resource Relation:
- Conference: Linear accelerator conference, Williamsburg, VA, USA, 3 Oct 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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