Message: Re: High energy ion projectiles in cosmic ray simulation Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

None Re: High energy ion projectiles in cosmic ray simulation 

Forum: Physics List
Re: Question High energy ion projectiles in cosmic ray simulation (Nicola Mori)
Re: None Re: High energy ion projectiles in cosmic ray simulation (Nicola Mori)
Date: 26 Oct, 2013
From: Nicola Mori <Nicola Mori>

I compiled Geant4 10.00.b01 and launched a run for C12 at 100 GeV/n using FTFP_BERT physics list. It's still running; this is what I get from the process list:

---------------------------------------------------
                           Hadronic Processes for GenericIon

  Process: ionInelastic
        Model:  Binary Light Ion Cascade: 0 eV  ---> 4 GeV
        Model:                      FTFP: 2 GeV ---> 100 TeV
     Cr_sctns: Glauber-Gribov nucleus nucleus: 0 eV  ---> 2.88022e+295 J  
     Cr_sctns:          GheishaInelastic: 0 eV  ---> 100 TeV

With my previous test with Geant4 9.5.0 and QGSP_FTFP_BERT I got:

Hadronic Processes for <GenericIon>
                                  -----------------------------------
        ionInelastic  Models:               Binary Cascade: Emin(GeV)=    0  Emax(GeV)= 4
                                                      FTFP: Emin(GeV)=    2  Emax(GeV)= 100000

        ionInelastic  Crs sctns:          AxenWellischIonH: Emin(GeV)=    0  Emax(GeV)= 100000
                                         TripathiLightIons: Emin(GeV)=    0  Emax(GeV)= 100000
                                                  Tripathi: Emin(GeV)=    0  Emax(GeV)= 100000
                                                  IonsShen: Emin(GeV)=    0  Emax(GeV)= 100000
                                          GheishaInelastic: Emin(GeV)=    0  Emax(GeV)= 100000

Apart from the different number of cross-section models, it seems to me that the processes and energy ranges are the same for the two cases (assuming that "Binary Cascade" and "Binary Light Ion Cascade" refer to the same thing). So how am I supposed to obtain different results? And how this relates to the "full FTF model for ion/ion" released for version 10 mentioned by V. Ivantchenko? I fear I'm doing something wrong or misunderstanding something...

 Add Message Add Message
to: "Re: High energy ion projectiles in cosmic ray simulation"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]