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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