The ASDEX ICRF antennae in their uncooled and cooled versions

In a first phase the two ICFR antennae in ASDEX were uncooled. They have operated for pulse length up to 1 s and have achieved their design power level of 1.5 MW each. The design principles and the characteristics of the antenna are described. In order to be able to operate with increased heating powers and pulse lengths most components inside the ASDEX vessel and the ASDEX ICRF antennae have to be cooled. For the antennae of this second phase, the underlying design criteria, the results of the thermal and mechanical calculations and the various manufacturing steps are presented. First tests on the thermal loading capabilities of the screen are included. (author)