Table 2.

Differences between measure and simulated FWHM, FW0.01M, and FW0.001M for in-air lateral profiles at the isocenter plane.

Width and energy	Meas.-MC (standard MCS) (cm)	Meas.-MC (new MCS) (cm)
FWHM	<0.1	<0.1
FW0.01M, E<105.8 MeV	<1.0	<1.8
FW0.01M, E>105.8 MeV	<0.3	<0.7
FW0.001M, E<105.8 MeV	<1.0	<2.8
FW0.001M, E>105.8 MeV	<0.8	<0.9