By ion beam funneling the beam current can be multiplied without changing the emittance, which is proposed for new high current accelerator facilities like HIDIF or ESS. There the required beam current can not be produced by a single pass rf-linac. The increase in brightness in such a driver linac is done by several funneling stages at low energies, in which two identically funneling studies, are not necessary [1,2,3]. A short r.f. funneling deflector is placed at the beam crossing position behind the RFQ. The HIDIF linac starts with 16 times 3 ion sources for three different ion species to allow socalled "telescoping" at the final focus [5]. With four funneling stages the frequency has been increased from 12.5 MHz to 200 MHz accordingly [6]. bunched-ion beams are combined into a single beam with twice the frequency, current and brightness.Our funneling experiment is a setup of two ion sources, a two beam RFQ, a funnel deflector and beam diagnostic equipment to demonstrate funneling of ion beams as a model for the first hneling stage of a HIIF driver. The progress of the funneling experiment and results of simulations will be presented.

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Beam simulations for the Frankfurt Funneling Experiment are done with RFQSim and FUSIONS. RFQSim is a particle dynamic program to compute macro particle bunches in the 6D phase space through a RFQ accelerator. Behind the RFQ the simulation software FUSIONS calculates both beam lines through a r.f. funneling deflector. To optimise beam transport of existing and new funneling deflector structures FUSIONS is presently being developed. The status of the development of FUSIONS and the results will be presented.

High intensity accelerator concepts for Heavy Ion Inertial Fusion (HIIF) injectors require small emittance, high current and high energy beams. The improvement of brightness in such a driver linac is done by several funneling stages at low energies, in which two identically bunched ion beams are combined into a single beam with twice the frequency, current and brightness. For the Heavy-Ion Driven Ignition Facility (HIDIF) we have proposed the use of a two-beam accelerator structure which provides two beams within one cavity and a single r.f. deflector structure which bends the two beams to one common axis. The progress of the experiment and first beam-test results will be presented.