| 1 |
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| 2 | Geant4 9.1 - patch-02 Release Notes
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| 3 | -----------------------------------
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| 4 |
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| 5 | 9 May 2008
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| 6 |
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| 7 | List of fixes included in this public patch since the public release 9.1.p01:
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| 8 |
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| 9 | o Configuration:
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| 10 | -------------
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| 11 | + Fixed in liblist.c use of gets() by adopting safer fgets().
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| 12 | + Linux-icc.gmk: updated setup to make use of icc-10.1 and ifort-10.1;
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| 13 | changed compilation option "-mp" to more performant "-fp_model precise".
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| 14 | + Linux-g++.gmk: Replaced g77 with gfortran compiler.
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| 15 |
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| 16 | o Environments:
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| 17 | ------------
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| 18 | + Fixed compilation problems.
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| 19 | + Make direct usage of tags in G4Version header.
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| 20 |
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| 21 | o Geometry:
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| 22 | --------
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| 23 | + Cleared compilation warnings detected on gcc-4.3.0.
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| 24 | + magneticfield:
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| 25 | o Fixed 'unused' non-initialized values of dydx in classes
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| 26 | G4EqMagElectricField and G4EqEMFieldWithSpin.
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| 27 | + management:
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| 28 | o Added missing protected copy-contructor and assignment operator
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| 29 | for G4VSolid.
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| 30 | o Added Shrink() and Reserve() methods to G4SmartVoxelNode to be used
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| 31 | for debugging studies.
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| 32 | + navigation:
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| 33 | o G4PathFinder: commented out warning and exception in ComputeStep()
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| 34 | for steps smaller than minimum threshold.
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| 35 | + solids/CSG:
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| 36 | o G4Cons: added protection against NaN in GetPointOnSurface() in the
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| 37 | case the check is run for Rmax1==Rmax2.
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| 38 | o G4Trap: corrections for arithmetic operations in 8-point constructor.
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| 39 | Addressing problem report #934.
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| 40 | + solids/specific:
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| 41 | o G4ExtrudedSolid: bug fix in MakeFacets() to fill 'fTriangles' also
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| 42 | in case of polygon with 3 or 4 vertices, as they are needed for
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| 43 | Inside(p). Fix in Inside(p) for correctly handling the case of
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| 44 | points located on the edges of triangles which are not the outline
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| 45 | edges of the polygon.
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| 46 | o G4TessellatedSolid: fixed bug in copy-constructor and internal method
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| 47 | CopyObjects() for cloning of facets. Fix in DistanceToOut(p,v,..) to
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| 48 | compute normal only if specified by flag in input.
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| 49 | o G4Polyhedra: fixed problem of out-of-bound access to vectors in
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| 50 | method GetPointOnSurface().
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| 51 | o G4IntersectingVone: added protection against NaN in LineHitsCone1()
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| 52 | in case of configurations where a conic section becomes a tube.
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| 53 | Added kCarTolerance in definition of "low" and "high" cone limits
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| 54 | in R and in Z in order to protect against numerical errors; this
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| 55 | fixes cases of DistanceToIn(p,v) returning 'kInfinity' when p+t*v
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| 56 | cross intersection between two cones.
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| 57 | o G4EllipticalCone: removed some debug printouts.
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| 58 | o G4Hype: refined polyhedron representation for correct visualization
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| 59 | of the shape.
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| 60 |
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| 61 | o Global:
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| 62 | ------
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| 63 | + Introduced inclusion of <cstring> and <climits> in G4String.hh and
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| 64 | templates.hh respectively for porting on gcc-4.3.0 compiler.
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| 65 | + Cleared compilation warnings detected on gcc-4.3.0
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| 66 | + Removed useless specification of units in implementation of
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| 67 | G4GeometryTolerance::SetSurfaceTolerance().
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| 68 | + Changed date for patch-02 to release 9.1.
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| 69 |
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| 70 | o Graphics Representations:
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| 71 | ------------------------
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| 72 | + Added G4Hype representation to HepPolyhedron and G4Polyhedron.
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| 73 | + Added inclusion of <cstdlib> in HepPolyhedron.cc for porting on
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| 74 | gcc-4.3.0 compiler.
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| 75 |
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| 76 | o Materials:
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| 77 | ---------
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| 78 | + G4NistMaterialBuilder: using correct dimension for the density for
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| 79 | ConstructNewMaterial() methods.
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| 80 | + G4Material: improved printout in error conditions by specifying the
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| 81 | name of the material affected.
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| 82 |
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| 83 | o Particles:
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| 84 | ---------
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| 85 | + G4ParticleTable: fixed implementation of methods Remove() and
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| 86 | RemoveAllParticles() so that particle definition objects are properly
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| 87 | deleted when invoking these methods between runs. It's user's
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| 88 | responsibility to delete dynamically instantiated particle objects.
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| 89 | Added method DeleteAllParticles() to remove and delete all particles
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| 90 | in the list. Addressing problem report #1007.
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| 91 | + Fixed bugs in G4Iontable::Remove() and G4ShortLivedTable::Remove().
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| 92 |
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| 93 | o Physics Lists:
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| 94 | -------------
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| 95 | + Fixed deletion using uninitialized pointers in FTF-BIC, for classes
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| 96 | HadronPhysicsFTF_BIC, G4FTFBinaryNeutronBuilder and G4LEPNeutronBuilder.
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| 97 |
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| 98 | o Electromagnetic Processes:
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| 99 | -------------------------
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| 100 | + Standard:
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| 101 | o G4UrbanMscModel90, G4UrbanMscModel: fixed asymmetry of lateral
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| 102 | displacement.
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| 103 | o G4ionIonisation: adopt 'linLossLimit' 0.15 as it was originally in 9.1.
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| 104 | o G4IonFluctuations: fixed discontinuity of width correction factor
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| 105 | for small velocities and added a protection to its value
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| 106 | (factor>1), which fixes very long alpha events.
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| 107 | + Utils:
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| 108 | o G4EmCorrections: set finite size correction to zero (provides flat
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| 109 | distribution of vertex detector response for high energy hadrons).
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| 110 | o G4ionEffectiveCharge: minor change of numerical constants to provide
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| 111 | continuous change of charge versus energy.
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| 112 |
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| 113 | o Hadronic Processes:
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| 114 | ------------------
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| 115 | + Cleared most compilation warnings detected on gcc-4.3.0.
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| 116 | + cross_sections:
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| 117 | o G4NeutronInelasticCrossSection: fixed bug which used to return zero
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| 118 | cross section for 3He.
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| 119 | o G4TripathiLightCrossSection: fixed bug in method IsApplicable() to
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| 120 | use GetN() instead of GetA() for target.
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| 121 | o Added capability to use element-based cross section data
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| 122 | sets if no isotope-based ones are available. This is required to
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| 123 | get the HP neutron code to work within the cross section framework
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| 124 | introduced in version 9.0. Added internal method to class
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| 125 | G4CrossSectionDataStore.
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| 126 | + models/cascade:
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| 127 | o Added Coulomb barrier in G4EquilibriumEvaporator.
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| 128 | o Changed pp, nn total cross section parameterization in class
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| 129 | G4CascadSpecialFunctions to more closely reflect the PDG values;
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| 130 | fixed cross section bug responsible for returning low or zero total
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| 131 | cross sections for pi-p, pi+n, np, and pi0 interactions.
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| 132 | + models/chiral_inv_phase_space:
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| 133 | o Modified G4QElasticCrossSection to fix problem with quasi-elastic.
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| 134 | When run together with elastic, the parameters to sample T were not
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| 135 | updated, this fix is to always update these.
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| 136 | o Fixed case of exceeded boundary bounds in G4QCollision.
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| 137 | o Check on tolerance is replaced by check on exact equality for fixing
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| 138 | event reproducibility.
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| 139 | + models/coherent_elastic:
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| 140 | o G4HadronElastic: added extra protection against precision lost
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| 141 | when projectile almost lost kinetic energy; set 'lowestEnergyLimit'
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| 142 | to be 1.e-6*eV (was 0.0).
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| 143 | Added extra protection: if sampled t out of the physics range then
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| 144 | no scattering.
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| 145 | o G4UHadronElasticProcess: call to G4QElasticCrossSection with option
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| 146 | "false", so parameters for sampling of scattering are precalculated.
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| 147 | + models/neutron_hp:
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| 148 | o Fix against cases of division by zero.
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| 149 | o Fixed erroneous condition in G4NeutronHPContAngularPar.
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| 150 | o To increase performance, checking point of "neglecting doppler
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| 151 | broadening" flag is changed from GetCrossSection() method to
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| 152 | BuildPhysicsTable().
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| 153 | + models/theo_high_energy:
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| 154 | o Added missing Fermi momentum to quasi elastic scattering.
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| 155 | + stopping:
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| 156 | o G4MuMinusCaptureCascade: fixed case of NaN value in bound muon decay.
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| 157 |
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| 158 | o Generic Processes:
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| 159 | -----------------
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| 160 | + Decay:
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| 161 | o Added protection to properly handle shortlived particles with finite
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| 162 | pre-assigned proper time.
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| 163 | + Management:
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| 164 | o Fixed bug related to invoking ResetNumberOfInteractionLengthLeft()
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| 165 | at the zero length step
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| 166 | o Allow zero mean free path for PostStepDoIt().
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| 167 | + Parameterisation:
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| 168 | o Cleared compilation warnings detected on gcc-4.3.0.
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| 169 |
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| 170 | o Run:
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| 171 | ---
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| 172 | + Added G4Transportation to shortlived particles in G4VUserPhysicsList
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| 173 | in order to fix problem of non-assigned process for shortlived particle
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| 174 | decay detected in CMS.
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| 175 |
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| 176 | o Examples:
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| 177 | --------
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| 178 | + advanced/underground_physics:
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| 179 | o Fixed mis-sized arrays 'ring_phys_gas' and 'ring_phys_liq';
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| 180 | both were less than the utilized size.
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| 181 | + extended/field/field02:
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| 182 | o Fixed setup to correctly handle electric field.
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| 183 | + extended/field/field04:
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| 184 | o Fix to avoid error for invalid rotation specification
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| 185 | in F04DetectorConstruction::stringToRotationMatrix().
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| 186 |
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| 187 |
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| 188 | ----------------------------------------------------------------------------
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| 189 |
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| 190 | Technical Notes
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| 191 | ---------------
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| 192 |
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| 193 | o This patch should be applied on top of release 9.1
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| 194 | o Technical notes distributed for release 9.1 are also applicable and
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| 195 | valid for this patch.
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| 196 |
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| 197 | The code and rebuilt binary libraries for release 9.1 are available
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| 198 | through our "Download" Web page:
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| 199 | http://cern.ch/geant4/support/download.shtml
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| 200 |
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| 201 | Please refer to the Geant4 User Documentation:
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| 202 | http://cern.ch/geant4/support/userdocuments.shtml
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| 203 | for further information about using Geant4.
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