Detuned primary RF coupling system for variable frequency cyclotrons
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A new concept of impedance matching for an RF amplifier coupled to a cyclotron cavity, named detuned primary coupling, is proposed. It does not require the motion of the coupling loop in vacuum and the matching for different working frequencies is performed by detuning the eigenfrequency of the amplifier cabinet alone by means of a variable capacitor. A simple mathematical approach used in the design procedure is presented. Measurements on the 1 : 1 scale model of the VINCY cyclotron RF system have been carried out in the operating frequencies range. The results confirm the viability of the concept and the use of this approach in cyclotron RF amplifier coupling. (C) 1998 Elsevier Science B.V. All rights reserved.
Кључне речи:cyclotron / RF system
Извор:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1998, 413, 1, 7-16
ISSN: 0168-9002 (print)