1. Graduate Program in Information Technology and Healthcare Management, and the Beam Physics Group, Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS 90050-170, Brazil
2. Department of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom; and The Cockcroft Institute, Sci-Tech Daresbury, Warrington WA4 4AD, United Kingdom
3. Department of Physics, The University of Liverpool, Liverpool L69 3BX, United Kingdom; and The Cockcroft Institute, Sci-Tech Daresbury, Warrington WA4 4AD, United Kingdom
4. ICMUV, Instituto de Ciencia de los Materiales, Universidad de Valencia, 46071 Valencia, Spain