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Question Production of nuclear fragments in high-energy ion-ion interactions with FTF 

Forum: Hadronic Processes
Date: 22 Aug, 2015
From: Nicola Mori <Nicola Mori>

I'm comparing the outcome of ion-ion interactions at high energy of Geant4 10.01.p02 FTFP_BERT and Fluka DPMJET3. I shot O16 at 100 GeV/n on a 1 cm thick Al target and looked at the products of the hadronic interaction immediately after the interaction. The total interaction rates are in excellent agreement (less than 1% discrepancy) while the interaction products are not. FTF produces more light elements than DPMJET3; I did a more precise comparison for carbon products originated by spallation of the projectile: out of 50k simulated events, FTF gives 34 events with a high-energy C particle, while DPMJET3 about 388.

This figure is very important for my studies, so I wonder which model is considered to be more reliable. I've been told that Fluka is more reliable for high-energy ion simulations, but I'd like to hear the opinion of a Geant developer. If the FTF model in Geant is really not so accurate, are there plans to improve it? Thanks.

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