USRYIELD with a result of zero

Hello to all,

I am trying to study the LET a proton beam in an optical fibre.

To do so i am trying to use the USRYIELD card but the simulation only gives me a result of zero in all bins.

I’ve tried to look at other examples of the USRYIELD card but I can’t find what is wrong with my simulation…

comparisson.inp (1.6 KB)

I would be grateful if you could help.

Thank you.

Kind Regards :slightly_smiling_face:

Dear Duarte,

I had a look at your simulation and it seems like you are not launching your proton beam inside your fiber, was that on purpose?

With you geometry, by increasing the upper-limit on your scoring interval I do obtain a tab_list non empty.

You can find most of the information on how to use the USRYIELD, which is indeed not a trivial card to use here (page 49):

A lot is also available in the manual.

Best regards,

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