1. Department of Radiation Oncology, Heidelberg Ion‐Beam Therapy Center (HIT) Heidelberg University Hospital Heidelberg Germany
2. Faculty of Physics Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
3. Faculty of Physics and Astronomy Heidelberg University Heidelberg Germany
4. Clinical Cooperation Unit Translational Radiation Oncology German Cancer Consortium (DKTK) Core‐Center Heidelberg National Center for Tumor Diseases (NCT) Heidelberg University Hospital (UKHD) and German Cancer Research Center (DKFZ) Heidelberg Germany
5. Division of Molecular and Translational Radiation Oncology Heidelberg Faculty of Medicine (MFHD) and Department of Radiation Oncology Heidelberg University Hospital (UKHD) Heidelberg Germany
6. Heidelberg Institute of Radiation Oncology (HIRO) National Center for Radiation Oncology (NCRO) Heidelberg University Hospital (UKHD) Heidelberg Faculty of Medicine (MFHD) and German Cancer Research Center (DKFZ) Heidelberg Germany
7. Industrial Engineering Department University of Rome “Tor Vergata” Rome Italy
8. PTW‐Freiburg Freiburg Germany
9. Medical Campus Pius Hospital University Clinic for Medical Radiation Physics Carl von Ossietzky University Oldenburg Freiburg Germany
10. Medical Physics National Centre of Oncological Hadrontherapy (CNAO) Pavia Italy