OMSim
Geant4 for IceCube optical module studies
Classes | Typedefs
OMSimG4RadioactiveDecay.hh File Reference
Radioactive decays

Modified version of the original Geant4 RadioactiveDecay class to define custom decay time. More...

Include dependency graph for OMSimG4RadioactiveDecay.hh:

Detailed Description

By default, the decay time is derived from the isotope's lifetime, leading to prolonged float values when aiming for nanosecond precision. In the context of assuming secular equilibrium, OMSim adjusts the decay time based on the simulated time window when the decay time surpasses 100ms.

The choice of a 100ms threshold ensures the capture of correlations between consecutive decays when the intervals are brief. Given that the average time gap for the random component of the dark rate in the mDOM PMT is approximately 10ms (for low DR PMTs, and even shorter for those with higher radioactivity), correlations longer than 100ms cannot be distinguished.

You can expand this threshold in line 1240 of OMSimG4RadioactiveDecay.cc if you want to simulation low-background Optical Modules (OMs), however, it's anticipated that the results would exhibit marginal differences (if any).

Go to the source code of this file.

Classes

class  G4RadioactiveDecay
 

Typedefs

typedef std::map< G4String, G4DecayTable * > DecayTableMap