Gabriele Cosmo
112 lines
4.9 KiB
Plaintext
112 lines
4.9 KiB
Plaintext
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Geant4 11.0 - patch-04 Release Notes
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------------------------------------
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3 March 2023
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List of fixes included in this public patch since the public release 11.0.3:
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o Configuration
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-------------
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+ CMake:
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o Removed no longer required G4VecGeomShim module.
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VecGeom supports/supplies full imported targets since 1.1.18
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Use of VECGEOM_LIBRARIES variable is required to allow build against
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CUDA-enabled VecGeom.
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o Analysis
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--------
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+ Added a protection against nullptr in G4VAnalysisManager::GetNofNtuples()
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Addressing problem report #2518.
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+ Do not remove non-empty HDF5 output files.
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o Global:
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------
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+ Updated date and version for 11.0.4.
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o Materials:
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---------
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+ G4Material: added an extra check on number of atoms in method
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AddElementByNumberOfAtoms(..). Addressing problem report #2514.
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o Particles:
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---------
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+ G4XicZero, G4AntiXicZero, G4OmegacZero, G4AntiOmegacZero: updated mean
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lifetime values according to PDG-2022.
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+ G4Triton, G4AntiTriton: corrected the lifetime value for triton and
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anti_triton. The half-life (12.32 years) was incorrectly used instead of
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the mean lifetime (17.774 years) for triton, whereas the anti_triton was
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incorrectly treated as stable.
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+ G4AntiNeutron: set the "PDG stable" flag to "false", as for G4Neutron.
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This has no practical consequences, i.e. anti_neutron decays regardless
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of this flag.
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o Physics Lists:
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-------------
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+ constructors/decay
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o G4RadioactiveDecayPhysics: assigned RadioactiveDecay process to G4Triton
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(which is the only light ion that decays). Note: before, triton did not
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have beta decay, i.e. it was wrongly treated as stable even when
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radioactive decay physics was enabled; anti_triton did not, and still
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does not, have beta decay (because RadioactiveDecay, in its current
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implementation, does not handle any kind of anti-ions): in practice,
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this is an acceptable approximation because of its relatively long
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lifetime and the fact that annihilation and nuclear capture are more
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likely to happen before decay.
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o Processes - Electromagnetic:
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---------------------------
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+ standard:
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o G4WentzelOKandVIxSection: fixed numeric instability for the extreme
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case of very small kinetic energy (< 1 eV). Improved comments and
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fixed single scattering per region. Addressing problem report #2530.
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o Processes - Hadronic:
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--------------------
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+ cross_sections:
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o G4ComponentAntiNuclNuclearXS: fix and extension in methods
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GetTotalElementCrossSection() and GetInelasticElementCrossSection();
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a bug was causing undefined values for, respectively, the total and
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inelastic cross-sections of anti-proton interactions with light target
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nuclei (d, H3, He3 and He4).
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o G4NeutronInelasticXS, G4ParticleInelasticXS: fixed computation of
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isotope cross-sections. Addressing problem report #2498.
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+ models/cascade
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o G4NumIntTwoBodyAngDst: corrected incomplete initialization of a vector.
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Addressing problem report #2515.
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o G4TwoBodyAngularDist: corrected the charge exchange reaction of pion+
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on neutron producing in the final state pion0 and proton.
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Addressing problem report #2516.
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+ models/lepto_nuclear
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o G4ElectroVDNuclearModel: added protections against null pointers to
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gamma cross-section and material, responsible for rare crashes.
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+ models/particle_hp
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o G4ParticleHPContAngularPar: added protection against zero probability
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for both discrete and continuous emission.
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+ models/parton_string
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o G4DiffractiveSplitableHadron: fixed rare large energy violations seen
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with FTF when dealing with charm and bottom hadron nuclear interactions.
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o G4LundStringFragmentation, G4QGSMFragmentation: corrected value for
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the probability of charm/anti-charm creation from the vacuum (a factor
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of 10 higher was set to enhance the production of charm hadrons for
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testing purposes).
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o G4QGSMFragmentation: bug-fix in the method GetLightConeZ(), which
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might cause rare access to arrays with a wrong index.
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+ util
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o G4Nucleus: corrected method GetN_asInt() for the case of hypernuclei.
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----------------------------------------------------------------------------
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Technical Notes
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---------------
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o This patch should be applied on top of release 11.0 series.
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o Technical notes distributed for release 11.0 are also applicable and
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valid for this patch.
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The code and rebuilt binary libraries for release 11.0.4 are available
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through the Geant4 "Download" Web page.
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Please refer to the Geant4 User Documentation for further information about
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using Geant4.
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