Title :
Flat-field planar structures designed for small and large aspect ratios
Author :
Yu, D. ; Smirnov, A.V. ; Luo, Y.
Author_Institution :
DULY Res. Inc., Rancho Palos Verdes, CA, USA
Abstract :
We consider novel designs that provide field flatness of fundamental mode in transverse dimensions of planar RF structures. These designs include waveguides with slotted irises and/or dielectric loaded side openings. The specially modified, advanced planar structures can be produced with available technology for a number of purposes. High-aspect ratio structures are suitable for mm-wave generation in sheet-beam klystrons (SBK) and for industrial, medical and research linacs. Small aspect-ratio planar structures having "flat" impedance in central area may be applicable to linear colliders. Impedance flatness better than 1/1,000 over half of aperture cross-section is demonstrated in simulations done for sample structures
Keywords :
accelerator RF systems; dielectric-loaded waveguides; klystrons; linear colliders; millimetre wave generation; planar waveguides; advanced planar structures; dielectric loaded side openings; flat-field planar structures; fundamental mode; industrial linacs; large aspect ratios; linear colliders; medical linacs; mm-wave generation; planar RF structures; research linacs; sheet-beam klystrons; slotted irises; small aspect ratios; transverse dimensions; waveguides; Acceleration; Apertures; Couplings; Dielectrics; Frequency; Impedance; Klystrons; Particle beams; Periodic structures; Shape;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988276
