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Suppression of multipacting in rectangular coupler waveguides.

Geng, R. L. and Padamsee, H. and Belomestnykh, S. and Goudket, P. and Dykes, D. M. and Carter, Richard G. (2003) Suppression of multipacting in rectangular coupler waveguides. Nuclear Instruments and Methods A, 508 (3). pp. 227-238. ISSN 0168-9002

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Although a rectangular waveguide coupler has the conceptual advantages of simplicity and capability of withstanding higher power, builders of modern superconducting accelerators are routinely choosing instead a coaxial coupler for its proven performance. Multipacting induced discharge has been found to be an operating mechanism that prevents a rectangular waveguide coupler from reaching its full potential. Earlier calculations predicted the existence of two-sided multipacting in a rectangular waveguide geometry. In the present study, special waveguide sections of CESR type were built and tested. Multipacting characteristics of the waveguide were identified. Two multipacting suppression methods. the slotted waveguide method and the DC magnetic bias method, were experimentally evaluated. The multipacting current is suppressed by a factor of more than 2 by opening a slot on the broad wall. Complete multipacting suppression can be realized by using the DC magnetic bias method. (C) 2003 Elsevier Science B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Nuclear Instruments and Methods A
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments: Faculty of Science and Technology > Engineering
ID Code: 26811
Deposited By: Prof Richard G. Carter
Deposited On: 27 Jul 2009 10:28
Refereed?: Yes
Published?: Published
Last Modified: 24 Jan 2014 05:17
Identification Number:

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