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Study of RFQ Accelerating Structures Based on Multi-conductor Resonators

An analytical method which treats the radio-frequency quadrupole (RFQ) accelerating structures based on 4-rod configuration of electrodes has been developed. A new electric-field potential function in RFQ-channel with 4-rod configuration of the electrodes has been formulated for analytical study of effects of the intrinsic field distortion. Modifications of 4-rod RFQ structure and a new multiple-beam RFQ structure have been suggested.