Beta4.10.3-1.txt

                  Geant4 10.3-beta-01 Release Notes
                  ---------------------------------

                                                            30 June 2016

                 Migration Notes & Main New Features
                 -----------------------------------

  o Introduced new utility class G4MTBarrier implementing a synchronization
    point between threads.
  o Added handling of multiple actions to be instantiated and handled by
    user code. Added G4MultiRunAction, G4MultiPrimaryAction and
    G4Multi{Stepping,Tracking}Action.
  o Added ability to scale shapes' dimension in X, Y and Z.
    Added possibility to import/export scaled shapes in GDML.
  o Updated properties of particles according to PDG-2015.
  o Introducing floating level base to G4Ions and related classes.
  o Disabled multiple-scattering at post-step for position change,
    now all happening along-step.
  o All EM parameters now handled by G4EmParameters class and can be modified
    via UI commands, G4EmProcessOptions class is obsolete and will be 
    removed soon.
  o Major revision of the QGS final-state model (note: this was already
    included in 10.2.beta, but did not enter in 10.2 due to the missing
    re-tuning of parameters): implemented Reggeon cascading and "Fermi motion";
    new algorithm for the determination of the kinematical properties of
    partons; improved formation of the residual nucleus.
  o New tuning of the FTF model parameters; introduced smearing of delta-isobar
    mass and improved di-quark fragmentation into baryons in Lund string
    fragmentation.
  o Introduced drawing and filtering by touched volume in visualization.
  o New data sets G4ENSDFSTATE-1.3.1, G4RadioactiveDecay-4.4.1 and G4TENDL-1.2.


 ----------------------------------------------------------------------------

                             Technical Notes
                             --------------- 

  o Tested platforms:
    + Linux, gcc-4.8.4.
      Tested on 64 bit architectures (Intel or AMD) with CERN CentOS
      Linux 7 (CC7) (based on CentOS Linux 7).
      Versions of Geant4 have also been compiled successfully on other
      Linux distributions, Ubuntu, Debian, Suse or other RedHat systems.
    + MacOSX 10.11, clang-3.7 (Apple LLVM/Clang-7.3.0)
       * For multi-threading on MacOSX, -clang- compiler has to be used.
    + Windows/10 with Visual C++ 14.0 (Visual Studio 2015)
       * Multi-threading mode currently -not- supported on Windows.

  o More verified configurations:
    + Linux, gcc-4.9.4, gcc-5.3.0, gcc-6.1.0
    + Linux, Intel-icc 15.0, 16.0.
    + MacOSX 10.10 with clang-3.6
    + MacOSX 10.9 with clang-3.5
    + Linux for Intel Xeon Phi with Intel-icc 15.0, 16.0
      (gcc-4.9 compatibility layer)

  o Geant4 10.3-beta-01 has been tested using CLHEP-2.3.3.0, required
    for external installation of the CLHEP library.

 Please refer to the Geant4 User Documentation:
   http://cern.ch/geant4/support/userdocuments.shtml
 for further information about using Geant4.

 ----------------------------------------------------------------------------

List of features and fixes included in this Beta release since 10.2.p02:

  o Configuration:
    -------------
    + CMake:
      o Set CLHEP-2.3.3.0 as the required version for external CLHEP library.
      o Updated version of data sets:
        G4ENSDFSTATE-1.3.1, G4RadioactiveDecay-4.4.1 and G4TENDL-1.2.
        Updated tags for 10.3-beta.

  o Analysis:
    --------
    + Fixed incompatibility with ROOT 5.x and 6.x formats.
    + Fixed compilation warnings on Windows-64.
    + Updated to g4tools version 1.27.4 (see History_tools).

  o Event:
    -----
    + Introducing G4MultiEventAction to allow multiple user actions
      in the same job.

  o Externals:
    ---------
    + Updated CLHEP module to version 2.3.3.0:
      o Added use_atomic.h header to use std::atomic if compiler supports it.
      o MixMaxRng: corrected initialisation and use of 'numberOfEngines'
        when more than one threads calls the constructor.
        Use simple loop for flatArray(); engine built-in function turns out
        to be extremely slow and unefficient.
        Use seed_spbox() for seeding MixMax with single seed.
        Avoid hard-coded constant for initialisation of VECTOR_STATE_SIZE in
        MixMaxRng, to directly use actual value of "N" from mixmax generator.
        Corrected check for counter range in method getState().
        Changed default number of N in mixmax generator to 17 (was 256).
        Removed use of obsolete 'register' keyword.
        Provided new skipping coefficients for the new value of N and for
        the optional case N=8.
      o HepRandom: revised settings of "defaults" to use a single
        thread_local pointer.

  o Geometry:
    --------
    + magneticfield:
      o Added new stepper classes G4BogackiShampine23 (BS23),
        G4BogackiShampine45 (BS45) and DormandPrince745 (DP45),
        implementing third order (BS23) and fifth order (BS45, DP45)
        embedded RK tableaus.
      o Added new stepper classes embedded RK method: DoLoMcPriRK34 (6-stage
        3/4 RK, interpolation), DormandPrinceRK56 (9-stage 5/6 RK,
        interpolation, FSAL-able) and DormandPrinceRK78 (13-stage 7/8 RK,
        interpolation).
      o Added TsitourasRK45 stepper. 
      o First version of FSAL classes: FSAL Integrator Driver (concrete,
        stand-alone driver); FSAL Integrator Stepper (base class);
        FBogackiShampine45 (FSAL-version of BogackiShampine45 stepper);
        FDormandPrince745 (FSAL-version of FDormandPrince745 stepper).
      o G4MagIntegratorStepper: added counter for calls to equation RHS, 
        with Get/Reset() methods.
      o G4HelixMixedStepper: fixes and added new (5th order) stepper choices.
      o Fix in G4CashKarp for the size of arrays holding intermediate values.
    + management:
      o Added G4ScaleTransform class for Cartesian scaling transformations.
      o Introduced G4BoundingEnvelope helper class to be used for the
        calculation of the extent of a solid within the limits defined by
        the G4VoxelLimits object.
      o Properly use 3D transformations in G4ReflectedSolid. Removed unused
        affine-transformation data and related methods; removed not used cached
        inverse transformation. Simplified code.
        Re-implemented CalculateExtent() to use new class G4BoundingEnvelope.
    + solids/Boolean:
      o Added new class G4ScaledSolid providing ability to scale dimensions of
        a shape in X, Y or Z.
      o Boosted computation of GetPointOnSurface() for G4BooleanSolid;
        reimplemented algorithm, using cached list of primitives.
      o Added warning in G4BooleanSolid::GetPointOnSurface() in case of non
        convergence after fixed number of trials.
    + solids/specific:
      o Revised implementation for GetSurfaceArea() and GetCubicVolume() in
        G4GenericTrap.
      o Added 'const' qualifier for methods in G4ExtrudedSolid.
        Added CheckPolygon() to remove collinear and coincident points from
        polygons.
      o Improved algorithms for computation of area in G4TriangularFacet and
        G4QuadrangularFacet. Added post-const qualifier to GetArea().
      o G4QuadrangularFacet: added exhaustive tests in constructor to catch
        potential problems with a quadrangular facet: collinear vertices, non
        planar surface, degenerate, concave or self intersecting quadrilateral.
      o G4TriangularFacet: improved test in constructor to detect degenerate
        (too small or too narrow) triangles.

  o Global:
    ------
    + Added 'us' and 'ps' units symbols for microsend and picosecond
      respectively to G4UnitsTable. Requiring new CLHEP library 2.3.3.0
      for external CLHEP library.
    + Converted all units and constants from "static const" to "static
      constexpr".
    + Introduced new utility class G4MTBarrier implementing a synchronization
      point between threads.
    + Changed exception code in G4TWorkspacePool from G4TWorkspacePool
      to "WorkspaceNN".
    + Changed date for release 10.3-beta.

  o Materials:
    ---------
    + G4DensityEffectData, G4IonisParamMat: fixed density effect parameters
      corrections for the case when NIST mean ionisation potential is not equal
      to that parameter in Shternheimer table.
    + G4NistElementBuilder, G4NistMaterialBuilder: added access to the mean
      ionisation potential; put liquid water in front of the list of NIST
      materials (index=0), so pure materials can be easier accessed via atomic
      number (Z > 0).
    + Added new class G4AtomicShells_EADL which extends shell data up to Z=120.
    + G4MaterialPropertiesTable: moved complex methods from inline to source.
    + G4UCNMicroRoughnessHelper: all methods declared as const.
    + G4NistManager, G4NistMaterialBuilder, G4NistElementBuilder: added new
      const methods FindElement(), FindMaterial() and FindSimpleMaterial(),
      for possible run-time use in MT mode.
    + G4Material: avoid deletion of G4MaterialPropertyTable.
    + G4Element: added method GetZ_asInt().
    + G4AtomicShells, G4SandiaTable: substituted asserts by G4Exception.
    + Code cleanup; adoption of nullptr, use of const/static.

  o Particles:
    ---------
    + Updated properties of particles according to PDG-2015.
    + Introducing floating level base to G4Ions and related classes.
      Migrated G4NuclideTable to the new floating level base scheme;
      temporarily disable new scheme for G4IsotopeMagneticMomentTable.
    + Fixed G4IonTable::GetIon() with non-zero level.
    + Changed default life of ion and hyper nucleus from -1 to 0.
    + Fixed Coverity defects.

  o Persistency:
    -----------
    + GDML:
      o Added ability to automatically export the names of sensitive detectors
        as auxiliary information.
      o Added ability to import and export scaled shapes. Extended GDML schema
        by adding "scaledSolid" tag supporting scaled shapes.
      o New GDML schema version 3.1.4 (files: gdml.xsd, gdml_solids.xsd).
        
  o Physics Lists:
    -------------
    + Builders:
      o Disabled multiple-scattering at post-step in OrderingParameterTable.
    + Constructors:
      o electromagnetic:
        - Added SetScintillationTrackInfo() method to G4OpticalPhysics with
          associated command in G4OpticalPhysicsMessenger.
          Fixed memory leak in G4OpticalPhysicsMessenger.
        - Partial fix for allowing calls to optical UI commands in "PreInit"
          state. Partially addressing problem report #1832.
        - G4EmStandardPhysics_option3, option4: added process of e+e- pair
          creation by e+ and e-; enabled lateral displacement for muons and
          hadrons.
        - G4EmStandardPhysicsGS: set default range factor to 0.1.
        - DNA and ModelActivator constructors: corrected model/process names;
          adjusted high energy threshold of solvation (kill) in respect to the
          energy range of the elastic model.
          Added G4DNAElectronSolvation to all DNA constructors.
        - Updated G4EmDNAPhysics_option5 and G4EmDNAChemistry.
        - Updated G4EmDNAPhysics_option7 constructor.
        - Updated G4EmModelActivator. Fixed activation of DNA models.
          Use Uehara model with chemistry. Corrected elastic process name
          for ions.
        - Added flag and command for whether or not to call InvokeSD() method
          of G4OpBoundaryProcess.
        - Fixed G4Exception message in G4OpticalPhysicsMessenger.
        - Fixed Coverity defects.
      o decay:
        - Added G4UnknownDecayPhysics constructor.
        - G4RadioactiveDecayPhysics: enabled atomic de-excitation by the call
          to EM parameters in ConstructProcess() method.
    + Lists:
      o FTFP_BERT_TRV: Switch on the low-mass diffraction dissociation
        used in G4HadronHElasticPhysics.
        Use GS multiple scattering with the most precise "error-free"
        stepping instead of the default (Opt0), for the purpose of studying
        the impact of multiple scattering on hadronic showers.
      o Moved code to be inline in G4RegisterPhysLists so that it gets
        compiled as part of the G4PhysListRegistry compilation unit.
        This ensures that all the physics lists declared to the registry are
        referenced by it such that the linker will include them if libraries
        are built statically.

  o Electromagnetic Processes:
    -------------------------
    + DNA:
      o G4DNAScreenedRutherfordElasticModel: modified handling of energy
        boundaries at init time. Deprecated SetKillBelowThreshold() method;
        modified initialisation to prevent erasing/rewriting data.
      o G4DNAChemistryManager: reversed logic in CreateWaterMolecule()
        for interface with physics models.
      o G4DNAChampionElasticModel: rearranged declaration of attributes.
        Deprecated GetKillBelowThreshold() method; removed attributes;
        modified Theta() method. Reset check ekin >= LowEnergyLimit().
        Added missing computation of 'sigma'.
      o G4DNAUeharaScreenedRutherfordElasticModel: added exception at init
        time if  model is used for anything other than e-.
        Deprecated SetKillBelowThreshold() and GetKillBelowThreshold() methods,
        use G4LowECapture or G4DNAElectronSolvatation; modified
        SelectHighEnergyLimit() method; removed attributes.
        Added possibility to extend applicability limit.
      o G4DNAChampionElasticModel, G4DNAUeharaScreenedRutherfordElasticModel:
        added pre-processor flag to control Verbose check mode; checking energy
        boundaries in Initialise(), removed call to G4Electron; cleanup in
        CrossSectionPerVolume by removing unnecessary checks and calls to map;
        removed energy checks in SampleSecondaries().
      o Updated fast computation of G4DNAScreenRutherfordElasticModel and
        G4DNAUeharaScreenedRutherfordElasticModel.
      o Renamed class G4DNAElectronSolvatation to G4DNAElectronSolvation.
      o G4DNAOneStepThermalizationModel: using pre-processor flag to control
        check mode verbosity; removed call to G4Electron at initialization.
      o G4DNATransformElectronModel: using pre-processor flag to control check
        mode verbosity; removed call to G4Electron at initialization; added
        check for creation of solvated electron.
      o G4MoleculeCounter: at initialization time, prevent creating entries
        for unregistered molecule definition.
        Removed check of c++ version for unique_ptr/auto_ptr selection.
      o G4DNAMeltonAttachmentModel, G4DNASancheExcitationModel: removed usage
        of internal energy boundaries.
      o G4DNASancheExcitationModel: removed warning when SANCHE_VERBOSE is OFF.
      o G4VUserChemistryList: added flag; some code cleanup.
      o Added nrj extensibility to SR and USR models.
      o Replaced usage of std::exp() by G4Exp().
    + High Energy:
      o Use C++11 features explicit, override, delete, nullptr.
    + Muons:
      o G4ePairProduction: new process e+e- pair production by e+-.
      o Use C++11 features explicit, override, delete, nullptr.
    + Polarisation:
      o G4PolarizedCompton, G4eplusPolarizedAnnihilation,
        G4ePolarisedIonisation: in PostStepGPIL(), use cached values of
        'currentInteractionLength'; fixes problem at boundaries where
        updated value was incorrectly used.
      o C++11 migrations: explicit, override, delete operators on function
        declarations; remaining nullptr; write floats/doubles with '.'.
        Use C++11 features nullptr and range-based for loop in
        G4PolarizationManager.
    + Standard:
      o G4UrbanMscModel: use new lateral displacement algorithm in opt-3
        and opt-4 physics-lists. Modified randomisation of "true path length".
      o G4UniversalFluctuation: fixed bug in Glandz part, Gaussian sampling.
        The sampling is symmetrical around 'emean' now. Some code cleanup.
      o G4SeltzerBergerModel: fixed data handling for Z > 92.
        Addressing problem report #1870, about invalid read of data
        at run time.
      o G4eBremsstrahlungRelModel: change LPM constant such that it gives
        suppression variable consistent with Migdal's one; fixes small issue in
        LPM function computation.
      o G4alphaIonisation, G4hIonisation, G4ionIonisation: do not define
        StepFunction in constructor.
      o Fixed shadowing compilation warnings in G4GoudsmitSaundersonMscModel
        for 'ps'.
      o G4ASTARStopping, G4PSTARStopping, G4NISTStoppingData, G4BraggModel:
        data arrays become float, computation is left double.
      o G4BraggModel, G4BraggIonModel, G4BetheBlochModel: use float for local
        static data.
      o Added c++11 keywords: explicit, final, override, delete; use nullptr
        and use G4Element::GetZasInt().
   + Utils:
      o G4VEmProcess, G4EmModelManager: added extra methods to access models.
      o G4VEnegryLossProcess, G4EmCorrections: removed unused class members.
      o Use C++11 keywords explicit, override, delete and nullptr.
      o G4EmParameters, G4EmParametersMessenger: moved remaining parameters
        from G4EmProcessOptions, which now becomes obsolete.
      o G4EmCalculator, G4LossTableBuilder, G4LossTableManager, G4VMscModel,
        G4VEmModel, G4VEmProcess, G4VEnergyLossProcess: use only G4EmParameters
        class interfaces for initialisation.
      o G4NuclearFormfactorType: added new enumerator.
      o G4VMultipleScattering: moved position change to AlongStep.
        Added method NumberOfModels().
      o G4EmModelManager: reviewed and fixed model configuration for DNA
        physics.
      o G4EmParameters: allow to change parameters only from the master thread 
        and only at PreInit or Idle states.
      o G4EmCorrections: make part of data static, make internal vectors static,
        shared between threads.
      o G4LossTableManager, G4VEmModel, G4VMultipleScattering: minor cleanup of
        static const data.
      o G4VEmModel, G4VAtomDeexcitation, G4EmCalculator: use new method
        GetZasInt() from G4Element.
      o G4VEmModel: fix in SelectRandomAtomNumber() method. Fixed destruction
        in MT mode.
      o G4VAtomDeexcitation: fixed possible data race at initialistion.
        Extended printout at initialisation.
        Completed migration to G4EmParameters interface.
      o G4AtomicShell: make methods inlined.
      o G4DummyModel: set default low-enegry limit to 0 (needed for DNA).
      o G4VMultipleScattering, G4EmModelManager, G4LossTableManager: improved
        debug printout.
      o Fixed Coverity defects.
    + Xrays:
      o Added new class G4ScintillationTrackInformation and use it in
        G4Scintillation.
      o Use C++11 features explicit, override, delete, nullptr.

  o Generic Processes:
    -----------------
    - Biasing:
      o Checked for unbounded while loop in G4ProcessPlacer.
    + Decay:
      o Added better diagnostics in exception in G4Decay::DecayIt().
    + Optical:
      o Added flag for InvokeSD() method call in G4OpBoundaryProcess.

  o Hadronic Processes:
    ------------------
    + cross_sections
      o Checked do-while loops for potential infinite loops.
    + management
      o G4HadronicProcess: added flag for "integral" approach to take into
        account cross-section change at a step. Do not create new materials
        in GetElementCrossSection(), just try to find existing simple
        G4Material ones instead. Adopt C++11 keyword nullptr.
      o G4HadronicProcessStore: call initialisation of all
        G4HadronicInteractions.
    + models/coherent_elastic
      o G4LMsdGenerator: restored hadronic internal decay scheme allowing for
        stable decay of the Roper resonances.
    + models/de_excitation
      o G4EvaporationChannel, G4EvaporationProbability: fixed kinematics
        and added discrete excitation energy for the residual fragment
        if the excitation is below maximum known level energy. 
      o G4NuclearLevelData: added extra methods allowing to access the maximum
        level energy per isotope in level DB. Added method FindLevel() allowing
        to find discrete level for any consumer model.
      o G4DeexPrecoParameters, G4NuclearLevelData: added new class for
        parameters. 
      o G4EvaporationProbability: fixed bug in computation of probability 
        density function; use new method FindLevel() in G4NuclearLevelData when
        sampling kinetic energy of emitted particles; changed interface for
        sampling method. More detailed grid for probabilities.
        Use same sampling algorithm as in the pre-compound model (do not
        interpolate probability).
      o G4EvaporationChannel: use new interface to the sampling of energy.
      o Updated list of parameters; added full list of pre-coumpound parameters
        and extra de-excitation ones. Allow to change parameters only from the
        master thread and only at PreInit or Idle states.
      o G4ExcitationHandler: allow addition of new evaporation or FermiBreakUp
        models after the initialisation of the handler.
        Removed G4Exception when MF model is called, instead increase default
        limit on excitation energy per nucleon to 100GeV.
      o G4ExcitationHandler, G4EvaporationChannel, G4EvaporationProbability,
        G4NeutronRadCapture: use G4DeexPrecoParameters for initialisation;
        initialisation is done once at the first event.
      o G4NucLevel, G4LevelManager, G4LevelReader, G4PhotonEvaporation: changed
        data structure for the transition data; instead of final energy, index
        of final level, added multi-polarity of the transition.
        This will allow for correlated gamma emission.
      o G4EvaporationChannel, G4EvaporationProbability: improved initialisation
        of run time members
      o G4NuclearLevelData: improved FindLevel() method.
      o G4VEvaporationChannel, G4LevelReader, G4ExcitationHandler,
        G4LevelReader: removed commented lines, removed empty descructors.
      o G4VEvaporation, G4Evaporation, G4VFermiBreakUp, G4FermiBreakUp,
        G4PhotonEvaporation, G4ExcitationHandler: cleaned up initialisation;
        added G4VFermiBreakUp pure virtual methods allowing to have alternative
        models.
      o G4Evaporation: allow change of the channel factory after initialisation.
      o G4NeutronRadCapture: added initialisation of G4PhotonEvaporation.
      o G4DeexPrecoParameters, Evaporation: use default channel factory.
      o G4NuclearLevelData, G4LevelManager: added method to access low-edge
        levels.
      o G4KalbachCrossSection: more smooth inverse cross section for transitions
        of high energy.
      o Removed specific GEMCoulombBarrier classes per ion.
      o G4PhotonEvaporation: rationalised initialisation in case radioactive
        decay initialisation is incomplete, no effect on hadron inelastic
        interactions.
      o G4DeexPrecoParameters, G4NuclearLevelData, G4ExcitationHandler,
        G4PhotonEvaporation: fixed initialisation in MT mode if physics-list 
        has only radioactive decay.
      o Added c++11 keywords in many headers.
      o Added warning in G4ExcitationHandler for super excited fragments;
        improved warning printout for the high energy excitation.
      o G4LevelManager, G4NucLevel: substituted asserts by G4Exception.
      o Cleaned up code in CoulombBarrier and FermiFragment classes.
      o Fixed Coverity defects.
    + models/management
      o G4HadronicInteractionRegistry: added InitialiseModels() method.
        G4HadronicInteraction: added InitialiseModel() method.
      o G4VPreCompoundModel, G4VIntraNuclearTransportModel,
        G4HadronicInteractionRegistry, G4HadronicInteraction:
        added c++11 keywords, minor cleanup.
    + models/particle_hp
      o Changed default option of GNUmake script; G4PHPDEBUG flag was
        unintentionally activated.
    + models/parton_string
      o Major revision of QGS model; implemented Reggeon cascading and
        associated "Fermi motion". Implemented new algorithm of parton
        kinematical properties determination and calculation of residual
        nucleus properties. Adjusted G4GammaParticipants to the revised
        model.
      o Improved energy-momentum conservation in the QGS model, especially
        in the case of diffraction interactions.
      o G4QGSMSplitableHadron: fixed bug in the case of gamma projectile with
        P_minus = 0.
      o New tuning of FTF model parameters.
      o Introduced various <Pt^2> for diffractive and non-diffractive
        interactions in G4FTFModel, for NA49 and NA61/SHINE experimental data.
      o Fine tuning in G4DiffractiveExcitation for the FTF model, to describe
        NA49 experimental data, especially, <Pt> on Xf.
      o Fix to address the baryon puzzle of NA49 data; <Pt> of baryons 1/2 at a
        string fragmentation setting up at 435 MeV/c, and <Pt> for barion 3/2
        production st 900 MeV/c.
      o Fine tuning of G4LundStringFragmentation. <Pt> of mesons created at 
        quark fragmentation is decreased. <Pt> of baryons created at quark and
        di-quark is increased. Corrected fragmentation functions of qq-> B(1/2)
        and B(3/2). <Pt^2> is increased in 2 times.
        Important for a description of NA49 experimental data on pp-interactions
        at 158 GeV/c, especially for xF and Pt distributions.
      o Introduced smearing of delta-isobar mass; delta-isobars are now treated
        as a kinetic track; improved parameterisation of the quark exchange
        process with excitation.
        NA61/SHINE exp. data on Pi+, Pi-, K+, K- and protons in PP interactions
        at 20, 31, 40, 80 and 158 GeV/c are now described. Now reproducing the
        ratio of <Strane Q>/<Normal Q> in PP interactions. Not describing kink
        in AA interactions.
      o Improved di-quark fragmentation into baryons in Lund string
        fragmentation. Improved description of NA49 and NA61/SHINE exp. data
        on p+p->p+X. Improvements in method SetMinimalStringMass(), relevant
        for Pbar P annihilation.
      o Moved G4PomeronCrossSection class to 'qgsm' module.
    + models/pre_equilibrium
      o G4PreCompoundModel: changed non-equilibrium condition to switch to
        de-excitation; this allows to perform pre-equilibrium emission for
        light nuclei.
      o Migrated classes to use G4DeexPrecoParameters; removed obsolete class
        G4PreCompoundParameters.
      o G4GNASHTransitions: fixed problem in computation of probability.
      o Use nullptr and define internal const as static const.
    + models/radioactive_decay
      o G4RadioactiveDecay: renamed several methods and variables to more
        closely represent their meaning.
        In DoDecay(): added protection for zero pointer in case of missing
        decay channel.  Added new method AddDeexcitationSpectrumForBiasMode().
        In BuildPhysicsTable(), removed initialization of atomic de-excitation
        to avoid overwriting its initialization in EM.
        Throw fatal exception if initialization not done somewhere.
        Initialisation should be now done in physics-lists.
      o Added production of gamma and electron spectra from de-excitation of
        excited levels in the biased mode.
      o Removed obsolete class G4RIsotopeTable.
    + models/util
      o Fixed Coverity defect in G4Fragment.

  o Run
    ---
    + Added handling of multiple actions to be instantiated and handled by
      user code. Added G4MultiRunAction class to allow for multiple run actions
      in a single job; added G4MultiPrimaryAction to allow for multiple
      user-primary generation actions in a single job.
    + Renamed all MT related exceptions to have new code matching pattern.
    + Use scoped enum for G4MTRunManager::WorkerActionRequest and
      added PROCESSUI action.
    + Added G4MTRunManager::GetNumberActiveThreads() method.
    + Use new class G4MTBarrier to implement synchronization points.
    + Introduced skeleton for new functionality to force workers to 
      execute UI commands w/o beamOn.
      Introduced new UI command: "/run/workersProcessCmds" to trigger
      execution of UI commands by workers even without a "/run/beamOn";
      C++ API is G4MTRunManager::RequestWorkersProcessCommandsStack().
    + When workers are terminated they execute the UI commands issued
      after the last /run/beamOn
    + Fixed potential memory leak in G4RunMessenger.
    + Disabled multi-scattering during post-step in G4PhysicsListHelper.
      Fixed default process ordering parameters for G4UnknownDecay that
      should not have AtRest.
    + G4AdjointSimManager: correction in the use of run actions to avoid 
      infinite loop during an adjoint simulation.
    + G4AdjointPrimaryGenerationAction: removed 3 times splitting of primary
      adjoint gamma.

  o Track & Tracking
    ----------------
    + Change G4VUserTrackInformation pointer in G4Track to mutable and setters
      to be const-methods. This allows the user to set his/her
      G4VUserTrackInformation pointer without casting G4Track const pointer.
    + New G4Multi{Stepping,Tracking}Action classes to allow for multiple
      user-actions in the same job.

  o Visualization:
    -------------
    + management:
      o MT mode: moved flush to end of visualization thread; this is so that
        all trajectories are flushed from the thread before switching back to
        master thread. Also fixing picking in MT mode.
      o Introduced UI command /vis/viewer/interpolate.
      o Added some calls to SetView for security.
      o Inhibited use of BeginRun, BeginEvent, EndEvent and EndRun
        when vis is not enabled, for example after /vis/disable.
        In particular this prevents the start of the vis thread in
        multi-threading mode.
      o G4VisExecutive: registered drawing and filtering by touched volume.
      o G4VisCommandsSceneAdd: removed incorrect check on existing models in
        command "/vis/scene/add/volume". It was preventing parallel worlds being
        added individually.
      o Fixed mistake in introductory vis manager message.
      o Improved error tracking: introduced error code to track error
        conditions in G4VVisCommand; tracked error conditions for '/vis/open'
        and '/vis/drawTree' in G4VisCommandsCompound.
      o Improved '/vis/viewer/save'.
      o Use SetWorldVolume() for OriginVolume drawing and filtering. 
      o Code cleanup in G4VisCommandsSceneHandler.
    + modeling:
      o Introduced drawing and filtering by touched volume.
        i.e., "/vis/modeling/trajectories/create/drawByTouchedVolume"
              "/vis/filtering/trajectories/create/touchedVolumeFilter"
        and their associated commands.
        This selects only by a single string, the physical volume name.
        If there are more than one physical volumes with that name then any
        trajectory touching any one of those volumes will be selected.
        If the user sets more than one physical volume name (by using the set
        command more than once) the trajectory will be selected if it touches
        either of those volumes and which of the attributes (e.g., colour)
        associated with those volumes is chosen is arbitrary.
        A more comprehensive facility would allow the user to select by
        touched touchable, i.e., by the full path and copy numbers of the
        physical volume - but that is a job for the future if a use case arises.
      o Added specific arguments to LocateGlobalPointAndSetup() to handle
        multi-threading mode in G4TrajectoryDrawByOriginVolume::Draw() and
        G4TrajectoryOriginVolumeFilter::Evaluate().
      o G4TrajectoryModelFactories: added
        G4TrajectoryDrawByTouchedVolumeFactory.
      o G4TrajectoryFilterFactories: added
        G4TrajectoryTouchedVolumeFilterFactory.
      o Added new files and classes: G4TrajectoryDrawByTouchedVolume and
        G4TrajectoryTouchedVolumeFilter.  
      o G4ModelColourMap: sdded new access function GetBasicMap().
      o G4ModelingParameters: added VisAttributesModifier set commands.
      o Tidied uo G4TrajectoryDrawByOriginVolume.
      o G4TrajectoryDrawByOriginVolume: tidied #include statements.
    + OpenGL:
      o Xm: Ensure all items get flushed to screen, even when
        'eventsDrawInterval' is set greater than 1.
      o Fixed some inconsistencies in "/vis/ogl/set/eventsDrawInterval" and
        "/vis/ogl/set/displayListLimit" commands.
      o Fixed bug in picking output text.
      o G4OpenGLXViewer: Added thread awareness regarding glXMakeCurrent.
      o Fix for notifying multiple OGL X views.
      o Fix in G4OpenGLViewer::getRealPrintFilename() so that files can
        easily be referenced in alphanumeric order.
      o CompareForKernelVisit(): tested for total visualization attributes
        modifiers instead of just for size.
      o Fixed typo for macro G4CONDITIONBROADCAST.
    + OpenInventor:
      o G4OpenInventorXtExaminerViewer: designed new icons (XPM) for the
        "Extended Pick Mode" and "Pick Reference Trajectory" buttons.
      o Modified the mouse-over-trajectory output to make it more clear.
      o Improved diagnostics for Bookmark file handling.
      o New approach for determining distance along the reference path, using
        element centers instead of bounding boxes. Solves problems with spurious
        bounding box warnings and incorrect distance values.
      o G4OpenInventorXtExtended & G4OpenInventorXtExtendedViewer: suppressed
        some unwanted diagnostic output.
      o Fixed setting of transparency type
        (SoGLRenderAction::SORTED_OBJECT_ADD).
      o Fixed dispatching.
      o Fixed Coverity defects.
    + Tree:
      o G4ASCIITreeSceneHandler: prevent multiple writing of the informational
        header on the output file.
    + XXX:
      o CompareForKernelVisit(): tested for total visualization attributes
        modifiers instead of just for size.

  o Data Sets:
    ---------
    + G4ENSDFSTATE-1.3.1:
      o Added  missing data for AC225, SI25, 193RN, TE140.
    + G4RadioactiveDecay-4.4.1:
      o Added KM coefficients for e- capture and taken from DDEP data.
      o Correction to Fe55
      o Corrected 0 lifetime for Ac225.
    + G4TENDL-1.2:
      o Compressed version of the library.
      o Added information of source (ENDF/B-VII.1 or TENDL-2014) for each file.
      o Fixed problem to Deuteron/Inelastic/F01/1_3_Hydrogen.z.

  o Examples:
    --------
    + Updated reference outputs, macros and scripts.
    + advanced/air_shower
      o Replaced usage of std::log() by G4Log().
    + advanced/amsEcal
      o PhysListEmStandard: use G4EmParameters.
    + advanced/composite_calorimeter (ccal-V10-02-00)
      o Replaced usage of std::exp() by G4Exp().
    + advanced/hadrontherapy
      o Added new modulator class.
    + advanced/microbeam (microbeam-V10-02-00)
      o Replaced usage of std::exp() by G4Exp().
    + advanced/microelectronics
      o Fixed multiple-scattering definition in PhysicsList.
    + advanced/nanobeam
      o Replaced usage of std::exp() by G4Exp().
    + advanced/underground_physics
      o DMXPhysicsList: migrated EM physics to G4EmParameters.
    + extended/electromagnetic/TestEm0
      o PhysicsList: use G4EmParameters.
    + extended/electromagnetic/TestEm1
      o PhysicsList::AddRadioactiveDecay(): set like threshold to
        0.1*picosecond in G4NuclideTable. Updated radioactive.mac.
        Use G4EmParameters.
      o Added decayinfly.mac macro.
      o Modified colors in vis.mac.
      o PrimaryGeneratorMessenger: restore command SetDefaultKinematic.
        Updated all macros.
    + extended/electromagnetic/TestEm2
      o PhysicsList: use G4EmParameters.
    + extended/electromagnetic/TestEm3
      o PhysicsList: use G4EmParameters.
    + extended/electromagnetic/TestEm5
      o EventAction: corrected filling of histogram 1.
      o PhysicsList: use G4EmParameters.
      o Removed geant3 sub-directory.
    + extended/electromagnetic/TestEm7
      o Fix in c2_functions.
      o Fixed compilation warnings on gcc-6.1.
    + extended/electromagnetic/TestEm8
      o TestParameters, Run, PrimaryGeneratorAction, PrimaryGeneratorMessenger:
        reorganized printout of beam particle; use energy smearing as an
        addition of noise, so smeared noise should be added in units of energy.
    + extended/electromagnetic/TestEm10
      o Major example revision & clean-up: simplified class names; refactored
        detector construction & its messenger classes; revised scoring, removed
        unused code and replaced histograms with standard calls to g4tools;
        added StackingAction which accounts XTR gamma, all gamma and all e-
        spectra; changed to a modular physics list and introduced 
        TransitionRadiationPhysics builder; clean-up of the primary generator
        action; added test_suite.sh script.
    + extended/electromagnetic/TestEm11
      o PhysicsList: added radioactiveDecay process; use G4EmParameters.
      o Removed G4DiscreteScattering.
      o Run: compute energy deposit per absorber
      o PrimaryGenerator: restored SetDefaultKinematic().
      o Updated macro radioactive.mac.
    + extended/electromagnetic/TestEm12
      o PhysicsList, PhysListEmStandard: use G4EmParameters.
    + extended/electromagnetic/TestEm13, TestEm14
      o PhysicsList: use G4EmParameters.
      o Removed geant3 sub-directory.
    + extended/electromagnetic/TestEm15
      o PhysicsList: use G4EmParameters.
    + extended/electromagnetic/TestEm18
      o PhysListEmStandard: use G4EmParameters.
    + extended/hadronic/Hadr06
      o Added NE213 material.
      o PhysicsList: added G4StoppingPhysics.
      o EmStandardPhysics: use G4EmParameters.
    + extended/hadronic/Hadr07
      o New example to survey energy deposition and particle's flux from
        an hadronic cascade.
    + extended/medical/dna/clustering
      o Added GNUmakefile and reference output.
    + extended/medical/dna/dnaphysics
      o Added flagProcess value for electron capture.
      o DetectorConstructor, DetectorMessenger: ensure that geometry is created
        once; material may be changed for next runs.
      o SteppingAction: added label for solvation.
      o Added 2nd argument in SteppingAction for number of threads.
      o /run/initialise moved from code to macro.
      o DNA physics configuration moved from code to macro.
    + extended/medical/dna/microdosimetry
      o Increase cuts of G4ElectronCapture to 7.4 eV to remain compatible
        with the energy validity of the Champion's elastic model.
    + extended/medical/dna/range
    + extended/medical/dna/wvalue
      o Changed physics constructor selection.
    + medical/electronScattering
      o PhysListEmStandard: use G4EmParameters.
      o PhysListEmStandard_WVI, SS: added SetMscThetaLimit().
    + extended/parallel/TBB
      o Ported code following last updates to 'run' category.
    + extended/parallel/ThreadsafeScorers
      o Corrected GNUmakefile.
    + extended/persistency/persistency/gdml/G01
      o Added test case for scaled solids: scaledTube.gdml.
      o Added missing gdml files to CMake installation script.
    + extended/polarisation/Pol01
      o PhysicsList: move to use current method of ConstructParticle().
    + extended/radioactivedecay/rdecay01
      o Initialize atomic de-excitation in PhysicsList::ConstructProcess()
        instead of in G4RadioactiveDecay to avoid overwriting initializtion
        in EM.
      o Set world size to 2 cm and gun direction along X.
      o Added survey of each nuclide in a given time window.
        Print-out activity of each nuclide.
    + extended/radioactivedecay/rdecay02
      o PhysicsList: register hadronic processes.
    + extended/runAndEvent/RE01
      o Removed obsolete use of readout geometry.
      o Added protection against a track sticking on the calorimeter inner
        boundary.
      o Use G4UnknownDecayPhysics constructor and removed ad-hoc physics-list.
    + extended/runAndEvent/RE04
      o Added command "/vis/drawVolume worlds" to vis.mac.

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