|Message: Re: Physics List for polarized photons||Not Logged In (login)|
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When you are trying to use only minimum what you need in thePhysics Lists you may be in trouble:
1) you do not win any CPU speedup but may be some value in total memory of your application, which is not a problem 2) you may have problem if you miss something and for us will be not easy to make prompt advice
Much more easy to take available EM physics constructor an duse it directly - there is no problem that there are many particles which you do not use.
I would also advice to look into $G4INSTALL/examples/extended/electromagnetic instead of basic.