Dear FLUKA experts , I am a FLUKA beginer. I define an electron beam hitting two parallel aluminum plates (called tagert1 and target2) and use USRBIN and USRBDX to score it. [01] [022] And my questions are: (1) What’s the physics meaning of the USRBDX current scoring in the _sum.lis files? […

Dear @shiqiang.pang , All FLUKA scorings give the results per primary particle (except scorings used in activation calculations). You need to multiply this value with the real beam intensity, to get meaningful results. Your assumption is correct, if you have 3000 primaries, ~2286 electrons (both …

Thank you very much,sir. I learn a lot from your reply. There are still two points I would like to check: (1) In comparison with the mass of the proton,the mass of the electron is considered negligible. Is the way to get dose scoring results the same when protons are used? I mean,is that right …

Dear @shiqiang.pang , The mass of the particles are taken into account by FLUKA, so the method of normalization is the same for electrons and protons. I wanted to write USRBIN for the Region type scoring. Sorry about that. Cheers, David

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