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Idea Re: Physics list for antiprotons < 5 MeV 

Forum: Physics List
Re: Question Physics list for antiprotons < 5 MeV
Date: 11 Jan, 2015
From: Vladimir Ivanchenko <Vladimir Ivanchenko>


first of all, would be better if you will use FTFP based Physics Lists. Second, you do not need HP physics. So, I would recommend for hadronic part FTFP_BERT or QBBC.

For electromagnetic physics (EM). Anti-proton transport is very similar in all Physics List but there is two main differences: in the default, EM step limitation is not strong enough for low-energy particles, because of that you need to use one of EM options with more strong step limitation (EMY, EMZ, LIV, PEN). For example, you may use FTFP_BERT_LIV or QBBC_LIV. A good alternative may be FTFP_BERT_EMY and QBBC_EMY, in which the WentzelVI multiple scattering model for anti-protons is substituted by the Urban model.

Finally, in your case step limitation provided by EM physics itself may be not enough and you better add extra external step limiter on top of any Physics List you choose.


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