This presentation provides an overview of TU Wien's research activities at the MedAustron synchrotron in the fields of accelerator and medical physics, using the for research available 60-800 MeV proton, 120-400 MeV/u carbon and 40-400 MeV/u helium ion beams. These activities include, among others, the delivery of novel ion beam modalities, such as ultra-low flux and mixed helium-carbon ion beams, as well as their applications, for example, in advanced imaging techniques like ion computed tomography. The main emphasis of the talk will be the ongoing investigation into the delivery of mixed helium and carbon ion beams at the MedAustron accelerator facility. Due to their different ranges after simultaneous acceleration, the carbon ions are used to irradiate the tumor, whereas the helium ions could potentially be exploited for online range verification in a detector system downstream of the patient in the form of a helium radiography.