Dear @ainfanti,
Thank you for your response.
I want to verify that I have set the GCR source term correctly by comparing it with the energy spectrum form the *.spc file, as you said. I think that if both have the same distribution, then it can indicate the correctness of my subsequent calculations.
Regarding the normalization factor, I am a bit confused. Because in your answer, GCR extended layers and scoring through mgdraw file - #3 by ainfanti also uses NO-NORM selection, and its normalization factor can be calculated by fluxst/flux in the output file. Is it something to do with my model? I want to calculate the secondary neutrons produced under GCR irradiation and their distribution. The model is mostly composed of cylindrical and hexagonal prisms and within the radius of the GCR-IONF. If this calculation of the normalization factor does not apply, is there another way?
