Quality assurance at the heavy-ion therapy facility at GSI

In the present stage between the technological realization and the clinical phase, quality management gains a predominant role at the heavy ion therap y facility at GSI. Specific quality inspection procedures had to be develop ed for the subsequent parts of the beam delivery system, the treatment plan ning, the raster scanning device, the patient positioning, the dose verific ation and the safety interlock system. In the meantime the acceptance test of the whole facility has been carried out and an overview about our first experience with quality assurance procedures at the heavy ion irradiation f acility is given, with a special emphasis on the medical physics part.