The fifth joint Lecture Week of HGS-HIRe and RS-APS was held at “Seminarhaus Lieb`Lommerke” in Willingen from September 17 to September 22 this year. This year topic was “Laser-Particle Acceleration for Basic Research and Ion Therapy” presented by the lecturers Malte Kaluza (U Jena), Sergey Rykovanov (HI Jena) and Michael Scholz (GSI). The Lecture Week was completed by a lecture (Claude Krantz/U Heidelberg) at the Marburg Ion Therapy Center MIT and a guided tour of the therapy accelerator facility (Uwe Scheeler/ U Heidelberg).