摘要：At the moment,a 70MeV cyclotron is under construction by the ibA *** cyclotron will be able to accelerate H^- beam from a multicusp source and with a beam intensity in the range of 10mA at the source extraction.A He^(1+2+) beam is also *** beam will be produced by a PANTECHNiK ECR ion source(SUPERNANOGAN)with an extracted current of 1 to *** this paper the studies and design of the two sources with a common axial injection in the cyclotron are described.