PROGRESS IN NORMAL CONDUCTING RFQS IN FRANKFURT

Two Heavy Ion RFQs(1-3) have been built for the UNILAC at GSI, a new h igh charge state injector (HLI) and a prototype of a new high current injector (HSI). Both can be seen as blanches of actual RFQ development . The HLI-FQ aeeelerates U(28+)ions from an ECR-ion source from 2.5 ke V/u to 300 keV/u with a high duty cycle of now 25% at an operating fre quency of 108.5 MHz. The Spiral-RFQ for the HSI accelerator accepts lo w energy (2.2 keV/u). high current (25 mA) beams with low charge state s (U2+,Xe+) at an operating frequency of 27 MHz. Results of structure development and beam experiments for both structures are discussed whi ch can be seen as model for the first crucial part of a RFQ for low ch arged radioactive beams concerning low frequency operation, high duty factor and beam dynamics properties.