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physics: increase default time threshold for decays #160

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Dec 2, 2024
Merged

physics: increase default time threshold for decays #160

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5c5d64b
physics: increase default time threshold for decays
ManuelHu Nov 12, 2024
be7b99d
style: pre-commit fixes
pre-commit-ci[bot] Nov 15, 2024
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6 changes: 6 additions & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,12 @@ if(Geant4_FOUND)
message(STATUS "Found Geant4 v" ${Geant4_VERSION})
endif()

if(Geant4_VERSION VERSION_GREATER_EQUAL "11.2.0")
set(RMG_HAS_GEANT4_11_2_OR_LATER 1)
else()
set(RMG_HAS_GEANT4_11_2_OR_LATER 0)
endif()

# check for optional components
find_package(Geant4 QUIET OPTIONAL_COMPONENTS hdf5 usolids multithreaded gdml ui_all vis_all)

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1 change: 1 addition & 0 deletions cmake/RMGConfig.hh.in
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Expand Up @@ -12,5 +12,6 @@
#define RMG_HAS_BXDECAY0_THREADSAFE @BxDecay0_THREADSAFE@
#define RMG_HAS_GDML @RMG_HAS_GDML@
#define RMG_HAS_HDF5 @RMG_HAS_HDF5@
#define RMG_HAS_GEANT4_11_2_OR_LATER @RMG_HAS_GEANT4_11_2_OR_LATER@

#endif
9 changes: 9 additions & 0 deletions src/RMGPhysics.cc
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Expand Up @@ -66,6 +66,7 @@
#include "G4StoppingPhysics.hh"
#include "G4ThermalNeutrons.hh"

#include "RMGConfig.hh"
#include "RMGLog.hh"
#include "RMGNeutronCaptureProcess.hh"
#include "RMGOpWLSProcess.hh"
Expand Down Expand Up @@ -182,6 +183,14 @@ void RMGPhysics::ConstructProcess() {

// Hadronic Physics

#if RMG_HAS_GEANT4_11_2_OR_LATER
// Geant4 11.2 changed this to 1 year, which is rather short for our use case.
// Reset it to the old default of Geant4 11.0/11.1.
// note: this still might be too short for very rare decays, but it can be increased with
// a macro command.
G4HadronicParameters::Instance()->SetTimeThresholdForRadioactiveDecay(1.0e+27 * u::ns);
#endif

/*
G4ParticleHPManager::GetInstance()->SetSkipMissingIsotopes( false );
G4ParticleHPManager::GetInstance()->SetDoNotAdjustFinalState( true );
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