Too many off-shell warnings in 10.2.p3

Hi

I was trying to simulate the Carbon beam(290MeV/u) interacting with G4Water, however, too many warnings came out.
The physics list which I used is QGSP_BIC. If you use this physics list to run ‘examples/extended/hadronic/Hadr02’ with Water target and Carbon beam, you also find these warnings.
So do you have any idea and advice to fix this?

Thanks in advance!

Ye

/////Warning message///////

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : had012
issued by : G4HadronicProcess:CheckResult()
Warning: Secondary with off-shell dynamic mass detected:
proton, PDG mass: 938.272, dynamic mass: 1056.98
re-sample the interaction
Process / Model: alphaInelastic / Binary Light Ion Cascade
Primary: alpha (1000020040), E= 4303.63, target nucleus (8, 16)

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : had012
issued by : G4HadronicProcess:CheckResult()
Warning: Secondary with off-shell dynamic mass detected:
proton, PDG mass: 938.272, dynamic mass: 1036.61
re-sample the interaction
Process / Model: alphaInelastic / Binary Light Ion Cascade
Primary: alpha (1000020040), E= 4696.14, target nucleus (8, 16)

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : had012
issued by : G4HadronicProcess:CheckResult()
Warning: Secondary with off-shell dynamic mass detected:
proton, PDG mass: 938.272, dynamic mass: 1036.81
re-sample the interaction
Process / Model: alphaInelastic / Binary Light Ion Cascade
Primary: alpha (1000020040), E= 4164.39, target nucleus (8, 16)

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : had012
issued by : G4HadronicProcess:CheckResult()
Warning: Secondary with off-shell dynamic mass detected:
proton, PDG mass: 938.272, dynamic mass: 1074.25
re-sample the interaction
Process / Model: ionInelastic / Binary Light Ion Cascade
Primary: C12 (1000060120), E= 13438.8, target nucleus (8, 16)

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

-------- WWWW ------- G4Exception-START -------- WWWW -------
*** G4Exception : had012
issued by : G4HadronicProcess:CheckResult()
Warning: Secondary with off-shell dynamic mass detected:
proton, PDG mass: 938.272, dynamic mass: 1075.45
re-sample the interaction
Process / Model: alphaInelastic / Binary Light Ion Cascade
Primary: alpha (1000020040), E= 4480.12, target nucleus (8, 16)

*** This is just a warning message. ***
-------- WWWW -------- G4Exception-END --------- WWWW -------

Hello,

this problem is known and should be fixed in Geant4 10.6.

VI

1 Like

Hello @civanch

Thanks for the advice.
I will check this by using the latest version.

Thanks again,
Cheers,

Ye