| 1 |
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| 2 | Geant4 4.1 Release Notes
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| 3 | ------------------------
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| 4 |
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| 5 | 28th June 2002
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| 6 |
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| 7 | These are the main new features/fixes included in this release since the
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| 8 | last public release (for the detailed list of fixes/additions, please refer
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| 9 | to the related History files):
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| 10 |
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| 11 | o Configuration:
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| 12 | -------------
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| 13 | - Added Darwin-g++.gmk configuration file for MacOS-X systems running
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| 14 | with GNU g++ compiler.
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| 15 | - Removed obsolete SUN-CC4.gmk configuration file.
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| 16 |
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| 17 | o Event:
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| 18 | -----
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| 19 | - Introduced new G4TrajectoryContainer class aggregating STL vector.
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| 20 | - Added TransferOneStackedTrack() method to G4StackManager.
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| 21 |
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| 22 | o Electromagnetic Processes (Low-energy):
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| 23 | --------------------------------------
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| 24 | - New more complete and detailed data files (G4LOWEN1.1 data set).
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| 25 | - Extended parameterisation of e- ionisation (24 parameters per each
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| 26 | atomic shell) in order to have better fit to EEDL data.
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| 27 | - Bug fixes in e- bremsstruhlung process.
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| 28 | - Fixes and updates to parameterisation of the cross section in
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| 29 | photo-electric effect.
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| 30 | - Updates to polarised Compton process.
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| 31 | - Provided simulation of ionisation for GenericIons.
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| 32 | - Fixes in simulation of fluctuations of energy loss.
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| 33 | - Fixes in simulation of hadron induced fluorescence.
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| 34 | - Provided simulation of Auger electrons production.
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| 35 | - Fixes to the angular distribution in Rayleigh scattering
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| 36 | (G4LowEnergyRayleigh process).
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| 37 | - Added UI control on the threshold to produce fluorescence photons
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| 38 | and Auger electrons as secondaries.
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| 39 |
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| 40 | o Electromagnetic Processes (Standard):
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| 41 | ------------------------------------
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| 42 | - New classes (G4VXTRenergyLoss, G4GammaXTRadiator and G4RegularXTRadiator)
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| 43 | for the description of X-ray transition radiation as continuous process.
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| 44 | - New electromagnetic process G4GammaConversionToMuons for gamma conversion
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| 45 | into muon pairs.
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| 46 | - G4MultipleScattering: new parametrisation for angle distribution.
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| 47 | Modified boundary algorithm and some other minor fixes. Improvements
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| 48 | and performance optimisation.
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| 49 | - Fixes to hadron ionisation/energy-loss processes for delta-electron
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| 50 | spectra of GenericIons.
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| 51 | - G4eIonisation: fixed access to energy cuts in BuildLossTables.
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| 52 | - Modifications in G4PAIxSection allowing to get additional information on
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| 53 | transverse and longitudinal excitations at atomic frequences.
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| 54 | - Bug fix in G4GammaConversion::DoIt() for e+e- angular distribution.
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| 55 | - G4ComptonScattering: set LowestEnergyLimit to 1*keV.
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| 56 | - G4PhotoElectricEffect:
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| 57 | o keep only Sandia crossSections, removed call to BuildPhysicsTables.
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| 58 | Simplified public interface.
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| 59 | o generate theta angle of the photoelectron from Sauter-Gravila
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| 60 | distribution.
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| 61 | - G4Scintillation, G4Cerenkov: tracks are suspended only in 'fAlive' state.
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| 62 | - G4VMuEnergyLoss: bug fix in number of subcutoff delta.
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| 63 |
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| 64 | o General Processes, Parameterisation, Decay, Optical:
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| 65 | ---------------------------------------------------
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| 66 | - Added method G4VProcess::GetCurrentInteractionLength().
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| 67 | - Fixed bug in G4VProcess::PostStepDoIt() when MeanFreePath is DBL_MAX.
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| 68 |
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| 69 | o Geometry:
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| 70 | --------
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| 71 | - Introduced optional 3D geometry optimisation for parameterised volumes.
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| 72 | - Introduced ability to optionally disable optimisation of hierarchies of
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| 73 | geometry volume placements, through G4LogicalVolume.
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| 74 | - Enhanced reflection of volumes to cover all CSG and CSG-like solids.
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| 75 | - First release of module for importance biasing.
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| 76 | - Enhanced behavior for destructors of volumes/solids stores.
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| 77 | o Added locking mechanism for preventing conflicts when destroying
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| 78 | stores and deregistering pointers.
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| 79 | o Added Clean() static method to volumes/solids stores to explicitely
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| 80 | delete pointed objects in the stores and clear all entries.
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| 81 | - G4GeometryMessenger: added new commands to exploit more
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| 82 | features of the G4GeomTestVolume class for detecting geometry overlaps.
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| 83 | - G4Tubs: restored original "vertices" algorithm for
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| 84 | CalculateExtent() which was temporarly disabled.
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| 85 | - G4Sphere: bug fixed in Inside() for treatment of point p on z-axis.
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| 86 | - G4BREPSolidPCone: added sanity check of delta phi section value
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| 87 | and exception is thrown saying about this unsupported feature if
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| 88 | delta phi is less than 2*PI.
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| 89 | - G4AssemblyVolume:
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| 90 | o Fixed inconsistent handling of input rotation matrices.
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| 91 | o Corrected handling of cases when pointer to rotation matrix is zero.
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| 92 | o Moved accessors to assembly counters to public.
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| 93 | o Added support for user definable count base for generated physical
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| 94 | volumes.
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| 95 | - Implemented G4EllipticalTube::CreatePolyhedron().
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| 96 | - Fix in G4Navigator for problem concerning ExitNormal with photons.
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| 97 |
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| 98 | o Global:
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| 99 | ------
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| 100 | - G4String: use G4std::string instead of internal type 'std_string'
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| 101 | in signatures of public methods. No functional or interface changes.
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| 102 | - G4DataVector: initialise to zero values in collection for contructor
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| 103 | taking capacity.
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| 104 | - Added more verbosity to G4Exception.
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| 105 | - Introduced temporary patches for porting on gcc-3.1 compiler.
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| 106 |
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| 107 | o Hadronic Processes:
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| 108 | ------------------
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| 109 | - General code cleanup for removal of warnings.
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| 110 | - cross_sections:
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| 111 | o Included the high Q2 part of the cross-section into electro and
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| 112 | photo nuclear reaction cross-sections, and into the equivalent
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| 113 | photon production.
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| 114 | o New class for calculating projectile fragment cross-sections in
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| 115 | ion ion reactions. Implements Physical Review C61, 034607 (2000).
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| 116 | based on EPAX Version 2, with the kind permission of the authors.
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| 117 | - management:
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| 118 | o Included recoil charge state treatement in HadronicProcess.
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| 119 | o Bug-fix affecting energy conservation for anti-protons in hydrogene.
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| 120 | - models/chiral_inv_phase_space:
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| 121 | o Included Q2!=0 for gamma and electro nuclear reactions.
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| 122 | o Using quark-gluon string model now to simulate reactions with large
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| 123 | energy transfers.
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| 124 | o Added protection for reactions at threshold.
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| 125 | - models/coherent_elastic:
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| 126 | o Improvement for coulomb effects.
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| 127 | o Correction of array sizes; slightly extends the applicability.
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| 128 | - models/high_energy:
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| 129 | o Fix for a long standing problem in phi symmetry traced to the Cross
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| 130 | method of G4HEVector.
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| 131 | - models/leading_particle:
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| 132 | o New package, steming from a partial re-implementation of the MARS
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| 133 | code. Valid for energies below 5 Gev for proton/neutron/pi+-,
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| 134 | K+-/gamma/anti_proton
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| 135 | The code is intrinsically leading particle biased, hence applicable
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| 136 | for radiation background simulations.
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| 137 | Typical application of this would be in the ESA MOLASSIS application.
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| 138 | - models/low_energy:
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| 139 | o Correction for randomization of fermi motion (1 in 1000 effect).
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| 140 | o Better treatement for anti-nucleons through accounting of
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| 141 | annihilation energy.
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| 142 | o Various cross-sections in the accounting of nucleons.
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| 143 | o Improved pi-0 to charged pion rations used in low energy models.
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| 144 | o Improved treatement of Lorentz transformation, getting rid of the
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| 145 | 1 in 100 phi=0 peak for nucleons.
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| 146 | - models/neutron_hp:
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| 147 | o Resolved a problem in the effective luminosity correction
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| 148 | in the doppler broadening on the fly. Removes a bias in capture time
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| 149 | on termal neutrons in hydrogen (was off by 10%).
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| 150 | - models/radiative_decay:
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| 151 | o Fixed problem with sort, leading to erroneous behavior.
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| 152 | - models/generator/de_excitation:
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| 153 | o Moving the catching of low energy gammas.
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| 154 | o Adding a complete set of fresh evaporation code, that is more or
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| 155 | less equivalent to the GEM evaporation models. It produces fragments
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| 156 | up to Na25. Currently at beta level. G4Evaporation::SetGEMChannel()
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| 157 | method should be used to activate this.
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| 158 | - models/generator/high_energy:
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| 159 | o Included direct strong resonance decay in case of scattering off
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| 160 | hydrogen, hence removing this boundary use-case from the cascade
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| 161 | interface specifications.
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| 162 | - models/generator/management:
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| 163 | o Added utility interface for nucleus and nuclear density functions,
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| 164 | for the use of cascade codes.
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| 165 | - models/generator/pre_equilibrium:
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| 166 | o Fixed error in the low energy proton distributions
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| 167 | o Improvements in the level density.
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| 168 | o Bug fixed in angular distributions (theta).
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| 169 | o Small bug fixed in the equilibrium exciton number.
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| 170 | o Migration to new pairing corrections.
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| 171 | - models/generator/quark_gluon_string:
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| 172 | o Design iteration to enable specialization of participants
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| 173 | in string excitation.
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| 174 | o Added gamma nuclear reactions by adding specialised participants for
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| 175 | this; based on single nucleon participant model, and mesonic structure;
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| 176 | assuming vector meson dominance in the reactions and splitting.
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| 177 | - models/generator/util:
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| 178 | o Added utility for the decay of strong resonances.
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| 179 | o Added consts to enforce few design considerations.
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| 180 |
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| 181 | o Magnetic Field:
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| 182 | --------------
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| 183 | - Fix in G4MagIntegratorDriver to update the field track for small steps.
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| 184 | - Fixed LinearStep in G4MagHelicalStepper (expected unit direction).
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| 185 | - Changed maximum number of steps in driver from 500/order to 250/order.
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| 186 | - Fix in G4MagHelicalStepper::LinearStep().
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| 187 | - G4ChordFinder: corrected behaviour for very small or large step changes.
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| 188 |
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| 189 | o Materials:
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| 190 | ---------
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| 191 | - G4Material: removed check of the ideal gas state equation.
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| 192 |
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| 193 | o Particles:
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| 194 | ---------
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| 195 | - Added G4TauLeptonicDecayChannel for tau leptonic decay.
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| 196 | - Fixed a bug in G4NeutronBetaDecayChannel.
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| 197 |
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| 198 | o Run, Intercoms and Interfaces
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| 199 | -----------------------------
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| 200 | - Introduced new class G4UIGainServer, socket extension for G4UIGAG.
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| 201 | - Adopt limit to the number of stored command strings.
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| 202 | - Cleared naive usage of G4String type arguments from most UI classes.
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| 203 | - Modified G4RunManager to re-open geometry when G4 changes to QUIT state.
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| 204 | - Use "virtual" inheritance for G4VModularPhysicsList.
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| 205 | - Fixed pedantic warnings.
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| 206 |
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| 207 | o Tracking & Track:
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| 208 | ----------------
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| 209 | - G4TrackingManager: implemented EventAborted() method.
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| 210 |
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| 211 | o Transportation:
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| 212 | --------------
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| 213 | - Added new classes for management of biasing transportation and scoring.
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| 214 |
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| 215 | o Visualization:
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| 216 | -------------
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| 217 | - Prevent copying of autoRefresh status with /vis/viewer/set/all command.
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| 218 | - Corrected out of date advice about /vis/set/culling, etc.
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| 219 | - Deprecated /vis/viewer/set/autoRefresh command.
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| 220 | - Workaround for pseudo-parallel/orthogonal projection in Ray Tracer.
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| 221 | - Updated OpenGL to compile on Windows (G4VIS_BUILD_OPENGLWIN32_DRIVER).
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| 222 | - Bug fixes in G4VRMLXFileSceneHandlerFunc class.
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| 223 | - Fixed pedantic warnings.
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| 224 |
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| 225 | o Examples:
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| 226 | --------
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| 227 | - Novice:
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| 228 | o Added G4Scintillation process to example N06.
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| 229 | - Extended:
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| 230 | o Created 8 new examples for importance biasing and scoring.
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| 231 | o Created 2 new examples demonstrating event-level parallellism.
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| 232 | o Introduced first version of example for importing GDML geometries.
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| 233 | o Introduced first version of CMS tool for debugging geometries overlaps.
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| 234 | o Added example showing import of STEP CAD geometries.
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| 235 | o Created 2 new examples showing usage of HepMC event generator.
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| 236 | o Added new EM example TestEm6 for G4GammaConversionToMuons process.
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| 237 | o Migrated EM examples to use AIDA 2.2 for histogramming.
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| 238 | - Advanced:
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| 239 | o Updated examples to recent development and usage of histogramming
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| 240 | features in AIDA 2.2.
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| 241 | - Updated reference outputs.
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| 242 |
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| 243 | ----------------------------------------------------------------------------
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| 244 |
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| 245 | Technical Notes
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| 246 | ---------------
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| 247 |
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| 248 | The code and some binary libraries are available through our "Source Code"
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| 249 | Web page:
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| 250 | - see our Geant4 Home Page (http://cern.ch/geant4).
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| 251 |
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| 252 | Please refer to the Geant4 User Documentation
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| 253 | (http://cern.ch/geant4/G4UsersDocuments/Overview/html)
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| 254 | for further information about using Geant4.
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| 255 |
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| 256 |
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| 257 | Contents
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| 258 | --------
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| 259 |
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| 260 | 1. Supported and Tested Platforms
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| 261 | 2. AIDA and CLHEP
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| 262 | 3. The Standard Template Library (STL)
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| 263 | 4. Persistency
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| 264 | 5. Compiler Specific Problems
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| 265 | 6. Known Run-Time Problems
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| 266 | 7. Compilation Warnings
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| 267 | 8. Known Run-Time Warnings
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| 268 |
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| 269 |
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| 270 | 1. Supported and Tested Platforms
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| 271 | ---------------------------------
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| 272 |
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| 273 | o SUN Solaris 5.7, C++ 5.2 Patch 109508-03.
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| 274 | o Linux, gcc 2.95.2, egcs-2.91.66 (egcs 1.1.2).
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| 275 | This configuration was tested with the RedHat 6.1 and 7.2 distributions,
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| 276 | versions of Geant4 have also been compiled successfully on other Linux
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| 277 | distributions, like Debian or Suse.
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| 278 | The default RedHat compiler gcc-2.96 ditributed in RedHat 7.X is NOT
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| 279 | supported. It has been verified that it produces incorrect binaries,
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| 280 | therefore is not reliable. See also note below.
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| 281 | o Windows-2000 and CygWin Tools with: Visual C++ 6.0 Service Pack 5
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| 282 |
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| 283 | Platforms configured but not tested and not supported:
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| 284 | o DEC V4.0, cxx C++ V6.1-027 with/without ObjectSpace STL
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| 285 | o HP 10.20, aCC C++ B3910B A.01.23 with/without ObjectSpace STL
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| 286 | o SGI V6.5.5, CC 7.2.1 with ObjectSpace STL
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| 287 | o AIX 4.3.2, xlC compiler with ObjectSpace STL
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| 288 | o MacOS 10.1, gcc 2.92.2
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| 289 |
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| 290 | 2. AIDA and CLHEP
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| 291 | -----------------
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| 292 |
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| 293 | Geant4 4.1 requires the installation of CLHEP.
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| 294 |
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| 295 | See CLHEP (http://cern.ch/clhep/INSTALLATION/clhep.html).
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| 296 | Tests have been performed with CLHEP 1.7.5.0. However, first
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| 297 | level porting has also been verified on CLHEP 1.8.0.0.
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| 298 |
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| 299 | By default, the CLHEP installation scripts will activate ISO/ANSI C++ features
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| 300 | if the compiler is capable. You need to explicitly disable CLHEP settings in
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| 301 | case you wish non-ISO/ANSI setup on specific compilers.
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| 302 |
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| 303 | Geant4 4.1 examples with histogramming cowork with AIDA 2.2 implementations.
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| 304 | These include:
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| 305 | - ANAPHE 4.0.4 and components included therein:
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| 306 | Objectivity 6.1.3
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| 307 | HepODBMS 0.3.3.1
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| 308 | CLHEP 1.7.5.0
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| 309 | (see: http://cern.ch/anaphe)
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| 310 | - JAS 2.2.5
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| 311 | (see: http://jas.freehep.org)
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| 312 | - Open Scientist v8
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| 313 | (see: http://www.lal.in2p3.fr/OpenScientist/v8/welcome.html)
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| 314 |
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| 315 | AIDA headers can be downloaded from: http://aida.freehep.org
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| 316 |
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| 317 |
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| 318 | 3. The Standard Template Library
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| 319 | --------------------------------
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| 320 |
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| 321 | Native versions of STL have been tested on the following platforms:
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| 322 |
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| 323 | Windows/2000, Linux, and SUN.
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| 324 |
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| 325 | NOTES:
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| 326 |
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| 327 | - Platform specific setup:
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| 328 | o SUN: Native STL is required for ISO/ANSI setup.
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| 329 | o Linux: Native STL is required (non ISO/ANSI setup for egcs compiler only).
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| 330 | o W2000: Native STL and ISO/ANSI setup required (VC++ 6.0).
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| 331 |
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| 332 |
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| 333 | 4. Persistency
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| 334 | --------------
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| 335 |
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| 336 | See release notes for Geant4 4.0.
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| 337 |
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| 338 |
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| 339 | 5. Compiler Specific Problems
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| 340 | -----------------------------
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| 341 |
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| 342 | o Linux Red Hat 7.X, gcc-2.96.
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| 343 |
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| 344 | - The default compiler distributed by Red Hat since release 7.0 is
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| 345 | NOT supported and not considered reliable for running a Geant4-based
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| 346 | application. In more than one test case, binaries produced by gcc-2.96
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| 347 | have shown incorrect behavior, either due to wrong order of
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| 348 | initialisation of static data in memory or to bugs in the system
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| 349 | iostream classes, problems which apparently have all been solved in
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| 350 | more recent versions of the compiler (3.X series).
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| 351 | For information, gcc-2.96 is a compiler that has never been
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| 352 | officially released, nor supported by the GNU team itself and is not
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| 353 | considered reliable by the authors (for more information, see also
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| 354 | http://gcc.gnu.org/gcc-2.96.html).
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| 355 |
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| 356 |
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| 357 | 6. Known Run-Time Problems and Limitations
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| 358 | ------------------------------------------
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| 359 |
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| 360 | For a complete list of outstanding run-time problems and to submit any
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| 361 | problem you may find running this version of Geant4, please refer to the
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| 362 | Geant4 Problem Reporting System, available on the Web at this address:
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| 363 |
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| 364 | http://cern.ch/geant4/problemreport
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| 365 |
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| 366 |
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| 367 | 7. Compilation Warnings
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| 368 | -----------------------
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| 369 |
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| 370 | There are compilation warnings on some platforms. We do not believe
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| 371 | that any will lead to incorrect run-time behaviour, but we are working
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| 372 | on reducing them.
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| 373 |
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| 374 |
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| 375 | 8. Known Run-Time Warnings
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| 376 | --------------------------
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| 377 |
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| 378 | The following messages can be written to error output while tracking.
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| 379 | We believe none give rise to incorrect behaviour.
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| 380 |
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| 381 | o G4PropagateInField: Warning: Particle is looping
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| 382 | - tracking in field will be stopped.
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| 383 | It has performed 10000 steps in Field while a maximum of 10000
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| 384 | are allowed.
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