Alvarez 1 Alvarez 2 Alvarez 3 Alvarez 4 Frequency 108.41 MHz 108.41 MHz 108.41 MHz 108.41 MHz Energy [MeV/u] 3,6 5,9 8,6 11,4 β [%] 8,761 11,216 13,514 15,591 100% Horizontal Rms-Emittance, norm. [mm·mrad] [...] [%] 87,7 87,7 87,7 87,6 Beam Intensity [emA] 12,6 12,6 12,6 12,6 Beam Power (Pulse) [kW] 386 632 921 1221 Power (average) [kW] (Duty Factor 2 %) 8 13 18 24 *(only for 238 U 28+ ) The quoted beam intensties