| Summary: | G4ParticleChangeForDecay::CheckIt the global time goes back | ||
|---|---|---|---|
| Product: | Geant4 | Reporter: | marcus.h.mendenhall |
| Component: | processes/decay | Assignee: | kurasige |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | robert.a.weller |
| Priority: | P2 | ||
| Version: | 8.0 | ||
| Hardware: | All | ||
| OS: | All | ||
Dear Marcus,
I can not reproduce the problem for more than 100K events.
Could you send source codes of your physics list to me ? And let me know the
version of radioactive decay data set.
Regards,
Hisaya
The exception occurred because G4RadioactiveDecay was attached to triton which
has negative life time. To resolve the problem, change life time of triton as
follows before adding radioactive decay.
if (particle->GetParticleName() == "triton"){
particle->SetPDGLifeTime(3.2E8 * second);
}
|
I am running a simulation using 100 MeV protons on a Holmium-165 target. I am using the HadronPhysicsLHEP_BIC hadronic list, and RadioactiveDecay. I am getting error messages as shown below. This is a lot like what is shown in bug 731. The problem does NOT arise in Geant4.8.0 unpatched, but arises in Geant4.8.0-patch01. It happens every 10000 or so incident protons. It does not happen with 10 MeV protons. Here is the message: G4ParticleChangeForDecay::CheckIt : the global time goes back !! Difference: 1.0621356[ns] G4ParticleChangeForDecay::CheckIt ----------------------------------------------- G4ParticleChange Information ----------------------------------------------- # of 2ndaries : 3 Pointer to 2ndaries : 0x1ffeaac (Showed only 1st one) ----------------------------------------------- Energy Deposit (MeV): 0 Track Status : StopAndKill True Path Length (mm) : 0 Stepping Control : 0 Time (ns) : -0.302 *** G4Exception : 500 issued by : G4ParticleChangeForDecay::CheckIt time was illegal Any thoughts?