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Vane RFQs are particularly well suited to high intensity proton acceleration, since they offer minimal RF power losses and best accelerating field accuracy. Cea-Irfu is involved in several developments of 4 vane RFQs namely IPHI, Spiral2, Linac4 and ESS. This paper gives an overview of the design flow and tools developed at Irfu in order to design, tune, condition and commission RFQs. SPIRAL2 RFQ will be mainly used to illustrate this design flow. This CW RFQ requires 180 kW to achieve the nominal accelerating voltage. It can accelerate a 5 mA proton or deuteron beam (A/Q=1 and 2) or a 1 mA ion beam with up to A/Q=3 at 0.75 MeV/A. Conditioning and commissioning of this RFQ are actually in progress.
Olivier Piquet (Fri,) studied this question.