Table 2.

Selected $\sim$ 500 keV proton beam bandwidth (FWHM) and spatial size as a function of the proton source size obtained with FLUKA MC simulations. The best fit to the experimental result is highlighted.

Source size ($\mathrm{\mu }$m)	Width (mm)	$\mathrm{\Delta }{E}_P$ (keV)	$\mathrm{\Delta }{E}_S$ (keV)
100	0.72	27.5	33.8
110	0.77	32.1	32.5
120	0.88	34.4	35
130	0.96	36.9	39
150	1.00	41.9	43.6
180	1.19	51.2	54