1. Department of Physics “M. Merlin”, University of Bari , Bari , Italy
2. National University of Science and Technology, MISIS, RUS-119049 , Moscow , Russia
3. Department of Physics “E. Pancini”, University of Napoli , Napoli , Italy
4. Lebedev Physical Institute of the Russian Academy of Sciences, RUS-119991 , Moscow , Russia
5. INFN Section of Napoli , Napoli , Italy
6. Centro Nazionale di Adroterapia Oncologica (CNAO) , Pavia , Italy
7. INFN Section of Perugia , Perugia , Italy
8. Department of Physics, University of Torino , Torino , Italy
9. INFN Section of Torino , Torino , Italy
10. CEADEN, Centro de Aplicaciones Tecnologicas y Desarrollo Nuclear , Havana , Cuba
11. INFN Section of Milano , Milano , Italy
12. INFN Section of Pisa , Pisa , Italy
13. Department of Physics, University of Pisa , Pisa , Italy
14. Trento Institute for Fundamental Physics and Applications, Istituto Nazionale di Fisica Nucleare (TIFPA-INFN) , Trento , Italy
15. INFN Section of Bologna , Bologna , Italy
16. Department of Physics and Astronomy, University of Bologna , Bologna , Italy
17. INFN Laboratori Nazionali di Frascati , Frascati , Italy
18. Department of Physics, University of Trento , Trento , Italy
19. INFN Section of Roma 1 , Rome , Italy
20. Department of Physics, University of Rome La Sapienza , Rome , Italy
21. Department of Physics, University of Milano , Milano , Italy
22. Biophysics Department, GSI Helmholtzzentrum für Schwerionenforschung , Darmstadt , Germany
23. Technische Universität Darmstadt Institut für Festkörperphysik , Darmstadt , Germany
24. Department of Physics and Geology, University of Perugia , Perugia , Italy
25. Université de Strasbourg, CNRS, IPHC UMR 7871 , F-67000 Strasbourg , France
26. Department of Scienze di Base e Applicate per l’Ingegneria (SBAI), University of Rome La Sapienza , Rome , Italy
27. Physics Institute III B, RWTH Aachen University , Aachen , Germany
28. Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi , Rome , Italy
29. Department of Chemistry, University of Napoli , Napoli , Italy
30. Department of Physics, University of Rome Tor Vergata , Rome , Italy
31. INFN Section of Roma Tor Vergata , Rome , Italy
32. INFN Section of Bari , Bari , Italy
33. Department of Engineering, University of Perugia , Perugia , Italy
34. Department of Science and Technological Innovation, University of Piemonte Orientale , Alessandria , Italy
35. Department of Physics, Nagoya University , Nagoya , Japan