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TY - UNPB AU - Zhao, H.W. AU - Sun, L.T. ED - Schaa, Volker RW TI - FECRAL - a 45 GHz Fourth Generation ECR Ion Source and Its Technical Challenge J2 - Proc. of ECRIS2016, Busan, Korea, August 28 - September 1, 2016 C1 - Busan, Korea T2 - International Workshop on ECR Ion Sources T3 - 22 LA - english AB - A 45 GHz superconducting ECR ion source FECRAL (a Fourth generation ECR ion source with Advanced design in Lanzhou) is going to be built in the next few years as a key technology R&D of HIAF facility. HIAF injector of a superconducting heavy ion linac requests the ion source of delivering 50 pμA of 238U³⁵⁺ pulsed beam and 25 pμA of 238U³⁵⁺ CW beam. This presentation will present preliminary technical-design of FECRAL ECR ion source including magnetic field configuration produced by a Nb3Sn superconducting magnet with 6.5 Tesla axial mirror field and 3.5 Tesla sextupole field on the plasma chamber inner wall, 20 kW@45 GHz microwave coupling system and beam transport line. Obviously, to build a 45 GHz FECRAL ECR ion source, there will be many technical challenges, such as engineering and fabrication of the Nb3Sn superconducting magnet with 12 Tesla maximum magnetic field on the conductor, cryogenic system of the magnet, efficient coupling of 45 GHz microwave power, intense beam extraction and transmission to achieve good beam quality, integration of the FECRAL ion source system and analyzing beam line at a high voltage platform. PB - JACoW CP - Geneva, Switzerland ER -