Dear Benoit,
Thanks for your reply. What normalization factor should I enter in the Flair “Y” field so that the USRBDX proton spectrum exactly matches the input source spectrum (dN/dE vs E from data.txt)? In other words, how do I scale the USRBDX results (which are per primary) so that the plotted curve reproduces the original source distribution? Once this normalization is determined for the proton spectrum, how should I apply the normalization to the USRBDX alpha spectrum so that the alpha yield is plotted consistently with the normalized proton input spectrum? Thank you.