An intrinsically safe facility for forefront research and training on nuclear technologies — An example of accelerator: the SPES cyclotronM. Maggiore, A. Lombardi, L. A. C. Piazza and G. PreteEur. Phys. J. Plus, 129 4 (2014) 69DOI: https://doi.org/10.1140/epjp/i2014-14069-3