Gabriele Cosmo
185 lines
8.1 KiB
Plaintext
185 lines
8.1 KiB
Plaintext
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Geant4 9.4 - patch-03 Release Notes
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-----------------------------------
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9 December 2011
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List of fixes included in this public patch since the public release 9.4.p02:
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o Configuration:
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-------------
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+ Darwin-g++.gmk: modified OGLLIBS settings for proper configuration of
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OpenGL libraries in combination with Qt. Allow use of Qt libraries not
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installed as Framework. Also addressing problem report #1267.
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Removed unnecessary 'gcov' linkage for dynamic libraries.
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+ G4UI_BUILD.gmk: added setting of G4INTY_BUILD_XT for OPENGLXM and OIX.
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Visualization drivers need Xt, so this covers the case when the user
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does not build Xt from G4UI_BUILD flags. Addressing problem report #1250.
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o Digits_Hits:
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-----------
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+ G4THitsMap: removed the print-out of total value, to avoid inconsistency
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caused by a class <T> which does not have += operator or cannot be
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initilized to 0. Addressing to the problem report #1258.
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+ Fixed some Coverity defects for uninitialised pointers in
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G4TDigiCollection and G4THitsCollection.
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o Error Propagation:
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-----------------
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+ Defined method GetTranfMat() in G4ErrorFreeTrajectoryState.
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Addresses problem report #1248.
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o Geometry:
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--------
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+ divisions:
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o Optimise initialization of phi angles in parameterisation for tubs
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and cons.
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+ magnetic_field:
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o Corrected computation of 'omegac' G4EqEMFieldWithEDM, G4Mag_SpinEqRhs
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and G4EqEMFieldWithSpin with more coherent formula. Simplified formula
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for computation of kinetic energy in G4FieldTrack.
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+ navigation:
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o Fix in locator classes and navigator to address cases of tracks stuck
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on boundary of volumes: improved the condition for accepting a
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candidate intersection with a boundary in all locator classes, now
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checking if the track enters in the new volume.
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Resolves long-standing issue reported by ATLAS.
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+ solids/Boolean:
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o Corrected protection in G4SubtractionSolid::DistanceToIn(p,v)
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introduced previously and relaxed to not cause event abortion.
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+ solids/CSG:
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o G4Sphere: fix for setting of relative radial tolerances when setters
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for radiuses are explicitely called (affecting parameterisations on
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radius for spheres).
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Relaxed validity condition in construction for the minimum size of the
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outer radius.
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+ solids/specific:
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o Fix in G4TriangularFacet::Intersect() to take into account geometrical
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tolerance and cases of zero distance from surface's facet; fixed tests
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where square root was compared to half Cartesian tolerance; now
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compared to kCarTolerance. Addressing problem report #1242.
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o Fix in G4TessellatedSolid::DistanceToOut(p) and DistanceToIn(p) to
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exactly compute distance from facet avoiding use of 'outgoing' flag
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shortcut variant. Addressing problem report #1242.
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o Fix in G4Paraboloid::DistanceToIn(p,v) and DistanceToIn(p) to properly
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take into account tolerance and provide better estimation of distance
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respectively. Addresses problem report #1234.
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o Fix in G4EllipticalCone in DistanceToIn(p,v) to exclude imaginary
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solution (virtual cone) when distance is calculated.
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o Defined SetReferences() and InvertFacets() to
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G4GenericTrap::CreatePolyhedron() for proper visualisation of Boolean
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compositions with G4GenericTrap.
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o Defined SetReferences() to G4TessellatedSolid::CreatePolyhedron()
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for proper visualisation of Boolean compositions with
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G4TessellatedSolid. Addresses problem report #1235.
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o Fixed logic in G4VTwistSurface::GetEdgeVisibility() in treatment of
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corners.
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+ volumes:
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o Use WIN32 instead of G4LIB_BUILD_DLL as flag for protecting allocator
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choice in G4NavigationHistory on Windows.
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o Global:
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------
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+ Added missing post-const qualifier to G4String::compareTo() methods
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+ Changed date for patch-03 to release 9.4.
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o Graphical Representations:
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-------------------------
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+ G4PolyhedronArbitrary: defined SetReferences() and InvertFacets() methods
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necessary at the end to complete the polyhedron, in particular if the
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polyhedron suffers subsequent Boolean operations.
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+ Consistently make use of G4 types in HepPolyhedron and BooleanProcessor.
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o Persistency:
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-----------
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+ ascii:
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* Fixed case of dereferencing null pointer in G4tgbGeometryDumper
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DumpRotationMatrix() method.
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* Fixed bug on the usage of units. Addressing problem report #1240.
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* Fixed trivial compilation warning from Xcode in G4tgbVolume.
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+ gdml:
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* Fixes in reader to properly consider units in import for G4GenericTrap,
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G4EllipticalTube, G4TessellatedSolid and G4Tet.
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o Electromagnetic Processes:
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-------------------------
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+ HighEnergy:
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o Removed include of unused header in G4GammaConversionToMuons.
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+ Standard:
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o G4CoulombScatteringModel, G4eCoulombScatteringModel: increased
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low-energy threshold from 1 eV to 1 keV, below this threshold
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particle energy is set to zero
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o G4UrbanMscModel90, G4UrbanMscModel92, G4UrbanMscModel93: added
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protection for sampling of angle for very small steps and high
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energy e-. Fixing rare cases of back-reflection.
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+ Utils:
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o G4EmModelManager: fixed bug in algorithm to smooth cross-sections
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between different models. Responsible for observed discrepancy in
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lateral shower shapes reported by CMS.
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+ Xrays:
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o G4SynchrotronRadiation, G4SynchrotronRadiationInMat: fixed length
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of C-arrays for the interface with EM field.
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Addressing problem report #1236.
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o Fixed compilation warnings for variables set but not used.
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Fixed some Coverity defects.
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o Hadronic Processes:
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------------------
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+ cross_sections:
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o G4ElectroNuclearCrossSection: protections to avoid FPE numerical
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problems at low energies
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+ management:
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o G4HadronicProcess: changed order of checks, first track status,
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second cross-section (avoid computation of cross-section for zero
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energy particles).
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+ models/cascade:
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o G4CascadeInterface: added protection for proton target conservation
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failures. These happen due to elastic scattering near threshold.
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o Generic Processes:
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-----------------
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+ Parameterisations/gflash:
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o Fixed bug in G4FlashShowerModel::ModelTrigger() for energy condition.
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o Fixed Coverity defects, mainly related to uninitialised static data.
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+ Transportation:
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o Modified calcuation of 'deltaTime' for optical photons in
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G4Transportation (and G4CoupledTtansportation). The final velocity
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obtained by G4Track CalculateVelocityForOpticalPhoton() should be
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used instead of the initial velocity of the step.
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Addressing problem report #1239.
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o Track:
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-----
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+ Fix problems related to treatment of weight in G4ParticleChange.
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Addressing problem report #1243.
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+ Use G4VelocityTable as singleton to avoid unnecessary creation of
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G4PhysicsVector objects in the event loop.
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o Examples:
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--------
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+ Updated reference outputs.
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+ extended/parameterisations/gflash
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o Fixed bug in ExGflashSensitiveDetector::Initialize() for creation of
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new hits collection.
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+ novice/N04
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o Optimised initialisation of Phi angles in parameterisations to avoid
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recomputation of trigonometry.
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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 9.4 or 9.4.p02.
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o Technical notes distributed for release 9.4 are also applicable and
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valid for this patch.
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The code and rebuilt binary libraries for release 9.4.p03 are available
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through our "Download" Web page:
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http://cern.ch/geant4/support/download.shtml
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Please refer to the Geant4 User Documentation:
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http://cern.ch/geant4/support/userdocuments.shtml
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for further information about using Geant4.
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