Speaker
Description
In this paper we describe the static tuning procedure of the ARGITU/HiCANS-platform RFQ at ESS-Bilbao. The machining and assembly of the RFQ were finished during 2025. The cavity is a 3.1 meters long, 4-vane cavity operating at 352.2 MHz. It will accelerate a 40 mA (designed up to 65 mA) proton beam from 45 keV to 3.0 MeV. The RFQ will operate at 1% duty cycle in the first stages of the ARGITU HICANS platform, and later as the
injector of the linac at a maximum duty cycle of 5%.
The static tuning of the cavity has been carried out combining the
field profiles measured by a bead-pull technique with the aid of both a
conventional "SVD" algorithm and a novel genetic algorithm that was
required due to the available tuners range at the operational
frequency. The whole procedure and the results are described in this
paper, as well as other tests at low power RF and with the cooling
water in operation. The stability of the field profiles and the cavity
frequency with respect to the cooling water temperature are also
investigated.
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