1 | <HTML> |
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2 | <HEAD> |
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3 | <TITLE>Geant4 8.3 Release Notes</TITLE> |
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4 | </HEAD> |
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5 | <BODY BGCOLOR='F0F0F0'> |
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6 | |
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7 | <P> </P> |
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8 | <BR> |
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9 | <P> </P> |
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10 | |
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11 | <P ALIGN="Center"> |
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12 | <FONT SIZE="+4" COLOR="#238E23"> |
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13 | <B>Geant4 8.3 Release Notes</B> |
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14 | </FONT> |
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15 | |
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16 | <TABLE WIDTH="100%"> |
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17 | <TR><TD ALIGN="Right"> |
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18 | <FONT SIZE="-1" COLOR="#5C3317"> |
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19 | <B><I>May 4<SUP>th</SUP>, 2007</I></B> |
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20 | </FONT> |
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21 | </TD></TR> |
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22 | </TABLE> |
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23 | |
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24 | <BR><BR> |
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25 | <HR ALIGN="Center" SIZE="7%"> |
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26 | <P> |
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27 | The code and binary libraries for the supported systems are available |
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28 | through our <A TARGET="ext" HREF="http://cern.ch/geant4/support/download.shtml">Source |
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29 | Code Web page</A>. |
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30 | </P> |
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31 | <P> |
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32 | Please refer to the |
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33 | <A TARGET="ext" HREF="http://cern.ch/geant4/support/userdocuments.shtml">Geant4 |
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34 | User Documentation</A> for further information about using Geant4. |
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35 | </P> |
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36 | |
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37 | <H2><I>Contents</I></H2> |
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38 | <OL> |
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39 | <LI><A HREF="#1.">Supported and Tested Platforms</A></LI> |
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40 | <LI><A HREF="#2.">CLHEP and AIDA</A></LI> |
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41 | <LI><A HREF="#3.">Items for migration of the user code</A></LI> |
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42 | <LI><A HREF="#4.">Expected effects on physics and performance</A></LI> |
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43 | <LI><A HREF="#5.">Known Run-Time Problems</A></LI> |
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44 | <LI><A HREF="#6.">Compilation Warnings</A></LI> |
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45 | <LI><A HREF="#7.">Known Run-Time Warnings</A></LI> |
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46 | <LI><A HREF="#8.">Geant4 Software License</A></LI> |
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47 | <LI><A HREF="#9.">Detailed list of changes and fixes</A></LI> |
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48 | </OL> |
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49 | |
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50 | <P> </P> |
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51 | <A NAME="1."></a> |
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52 | <HR> |
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53 | |
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54 | <!-- ============================================== --> |
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55 | |
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56 | <H2>1. Supported and Tested Platforms</H2> |
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57 | |
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58 | Official platforms: |
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59 | <UL> |
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60 | <LI>SUN Solaris 5.8, C++ CC-5.5.</LI> |
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61 | <LI>Linux, gcc 3.2.3 or gcc 3.4.5.<BR> |
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62 | This configuration was tested on <I>32 bits architectures (Intel)</I> |
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63 | and <I>64 bits architectures (AMD)</I> with the Scientific Linux CERN 3 |
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64 | (SLC3) distribution (based on RedHat Linux Enterprise 3) and |
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65 | Scientific Linux CERN 4 (SLC4) distribution (based on RedHat Linux |
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66 | Enterprise 4). |
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67 | Versions of Geant4 have also been compiled successfully on other |
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68 | Linux distributions, like Debian, Suse or other RedHat systems.</LI> |
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69 | <LI>Windows/XP and CygWin Tools with: Visual C++ 7.1 .NET</LI> |
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70 | </UL> |
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71 | |
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72 | More verified configurations: |
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73 | <UL> |
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74 | <LI>SUN Solaris 5.8, C++ CC-5.4 Patch 111715-02</LI> |
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75 | <LI>Linux, gcc-4.1.2</LI> |
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76 | <LI>Linux, Intel-icc 9.1</LI> |
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77 | <LI>MacOS 10.4, gcc-4.0.1</LI> |
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78 | <LI>Windows/XP and CygWin Tools with: Visual C++ 8.0 (Visual Studio 2005)</LI> |
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79 | </UL> |
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80 | |
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81 | Platforms configured but not tested and not supported: |
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82 | <UL> |
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83 | <LI>AIX 4.3.2, xlC 6.0</LI> |
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84 | <LI>DEC V4.0, cxx C++ V6.1-027</LI> |
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85 | <LI>HP 10.20, aCC C++ B3910B A.01.23</LI> |
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86 | <LI>SGI V6.5.5, CC 7.2.1</LI> |
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87 | </UL> |
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88 | |
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89 | <P> </P> |
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90 | <A NAME="2."></A> |
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91 | <HR> |
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92 | |
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93 | <!-- ============================================== --> |
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94 | |
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95 | <H2>2. CLHEP and AIDA</H2> |
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96 | |
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97 | Geant4 8.3 requires the installation of |
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98 | <A TARGET="ext" HREF="http://cern.ch/clhep">CLHEP</A>.<BR> |
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99 | Tests have been performed with <B>CLHEP-2.0.3.1</B><BR> |
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100 | The software has been verified also with <B>CLHEP-1.9.3.1</B>.<BR> |
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101 | <P> </P> |
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102 | Geant4 8.3 examples with histogramming cowork with analysis tools compliant |
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103 | to AIDA 3.2.1 interfaces.<BR> |
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104 | AIDA headers can be downloaded from: |
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105 | <A TARGET="ext" HREF="http://aida.freehep.org">http://aida.freehep.org</A> |
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106 | |
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107 | |
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108 | <P> </P> |
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109 | <A NAME="3."></A> |
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110 | <HR> |
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111 | |
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112 | <!-- ============================================== --> |
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113 | |
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114 | <H2>3. Items for migration of the user code</H2> |
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115 | |
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116 | No particular migrations are required in order to upgrade from release 8.2 |
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117 | to release 8.3. |
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118 | Note that a full re-installation of libraries (or a full recompilation) and |
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119 | a recompilation of user applications is anyhow required. |
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120 | |
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121 | <P> </P> |
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122 | <A NAME="4."></A> |
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123 | <HR> |
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124 | |
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125 | <!-- ============================================== --> |
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126 | |
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127 | <H2>4. Expected effects on physics and performance</H2> |
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128 | |
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129 | <B>Standard Electromagnetic physics</B> |
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130 | <UL> |
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131 | <LI>No visible effects in CPU performance.</LI> |
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132 | <LI>Calorimeter response: stable within 1% for visible energy and resolution.</LI> |
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133 | <LI>Energy deposition in thin layers: stable for step size down to <TT>1 um</TT>.</LI> |
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134 | </UL> |
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135 | |
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136 | <B>Hadronic physics</B> |
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137 | <UL> |
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138 | <LI><U>Revised hadronic modeling, resulting in longer shower shapes</U>:<BR> |
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139 | the FTF model now has improved treatment of diffraction. As a result |
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140 | the longitudinal shower component now starts later and ends later, which |
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141 | goes in the direction of the data. The addition of quasi-elastic |
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142 | scattering (<TT>G4QuasiElasticChannel</TT>) to the QGS model is also |
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143 | expected to improve shower shapes by reducing the deep inelastic component.</LI> |
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144 | <LI><U>New cross section data sets added</U>:<BR> |
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145 | Barashenkov parameterised cross sections are now available for elastic |
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146 | and inelastic nucleon-nucleus and elastic and inelastic pion-nucleus |
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147 | scattering.</LI> |
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148 | <LI><U>Cross sections for user-defined elements</U>:<BR> |
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149 | cross sections are now calculated based on user-defined isotope |
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150 | abundances, if they are provided. Natural abundances are used |
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151 | otherwise.</LI> |
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152 | <LI><U>Improved muon capture model</U>:<BR> |
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153 | <TT>G4QCaptureAtRest</TT> model provides more accurate final state |
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154 | electron spectrum for muon capture and more accurate secondary hadron |
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155 | sprectra for hadron capture.</LI> |
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156 | <LI><U>Error reporting</U>:<BR> |
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157 | when a segmentation fault occurs in a hadronic process, the information |
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158 | about the process and model name where the fault has occurred will be |
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159 | printed out.</LI> |
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160 | </UL> |
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161 | |
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162 | <B>Physics Lists</B> |
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163 | <UL> |
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164 | <LI>FTFP and FTFC use a significantly revised FTF model. Comparisons to thin |
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165 | target experiment at ~10 <TT>GeV</TT> show much better agreement with data; |
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166 | the model is still under validation at higher energies. Prelimirary tests |
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167 | display slightly longer showers than the previous version of FTFP/FTFC.</LI> |
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168 | <LI>QGS type physics lists (QGSP, QGSC, QGSP_BERT, etc) now include a simple |
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169 | quasi-elastic model for a small fraction of high energy inelastic |
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170 | interactions. The cross-section parameterisations for inelastic |
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171 | interactions include the quasi-elastic cross-section, while QGS only |
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172 | models deep inelastic interactions. |
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173 | <UL> |
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174 | <LI>For comparison or backward compatibility, the new QGSP_NQE, |
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175 | QGSP_EMV_NEQ, and QGSP_BERT_NQE ignore this new quasi-elastic, |
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176 | and are therefore the equivalent of QGSP, QGSP_EMV, and QGSP_BERT |
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177 | available in release 8.2 and before.</LI> |
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178 | <LI>Also, the obsolete QGSP_LEAD/QGSP_LEAD_HP do not include |
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179 | quasi-elastic.</LI> |
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180 | </UL></LI> |
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181 | <LI>QGSC physics list and its variants use CHIPS <TT>G4QCaptureAtRest</TT> |
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182 | to model capture of muons at rest instead of <TT>G4MuonMinusCaptureAtRest</TT>. |
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183 | This model better reproduces the spectrum of secondaries close to the |
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184 | kinematic limit.</LI> |
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185 | <LI>The new physics list QGSP_BERT_TRV is a variant of QGSP_BERT where Bertini |
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186 | cascade model is used only up to energies of 5.4 <TT>GeV</TT> for protons, |
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187 | neutrons, pions and kaons. For comparisons QGSP_BERT uses Bertini cascade |
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188 | model up to 9.9 <TT>GeV</TT>.</LI> |
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189 | <LI>HElastic model for projectile energy above 1 <TT>GeV</TT> is used for all |
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190 | targets with <TT>Z>1</TT>.</LI> |
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191 | <LI>In all lists for electro-magnetic physics, the "skin" for |
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192 | multiple-scattering on boundaries is set to zero, meaning that no |
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193 | computation of the linear distance to the geometrical boundaries is |
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194 | made by the multiple-scattering model.</LI> |
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195 | <LI>In the QBBC physics lists, the Binary Cascade is used up to 4 <TT>GeV</TT>, |
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196 | the FTFP model between to 3.5 to 12 <TT>GeV</TT>, and QGSP above 11.5 |
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197 | <TT>GeV</TT>.</LI> |
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198 | </UL> |
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199 | |
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200 | <P> </P> |
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201 | <A NAME="5."></A> |
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202 | <HR> |
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203 | |
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204 | <!-- ============================================== --> |
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205 | |
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206 | <H2>5. Known Run-Time Problems and Limitations</H2> |
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207 | |
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208 | For a complete list of outstanding run-time problems and to submit any |
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209 | problem you may find running this version of Geant4, please refer to the |
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210 | <A TARGET="ext" HREF="http://cern.ch/geant4/problemreport">Geant4 Problem Reporting |
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211 | System</A>. |
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212 | |
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213 | |
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214 | <P> </P> |
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215 | <A NAME="6."></A> |
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216 | <HR> |
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217 | |
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218 | <!-- ============================================== --> |
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219 | |
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220 | <H2>6. Compilation Warnings</H2> |
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221 | |
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222 | There may be compilation warnings on some platforms. We do not believe |
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223 | that any will lead to incorrect run-time behaviour. |
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224 | |
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225 | |
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226 | <P> </P> |
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227 | <A NAME="7."></A> |
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228 | <HR> |
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229 | |
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230 | <!-- ============================================== --> |
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231 | |
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232 | <H2>7. Known Run-Time Warnings</H2> |
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233 | |
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234 | The following message can be written to error output while tracking. |
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235 | We believe it does not give rise to incorrect behaviour. |
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236 | <PRE> |
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237 | G4PropagateInField: Warning: Particle is looping |
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238 | - tracking in field will be stopped. |
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239 | It has performed 1000 steps in Field while a maximum of 1000 |
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240 | are allowed. |
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241 | </PRE> |
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242 | |
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243 | |
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244 | <P> </P> |
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245 | <A NAME="8."></A> |
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246 | <HR> |
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247 | |
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248 | <!-- ============================================== --> |
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249 | |
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250 | <H2>8. Geant4 Software License</H2> |
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251 | |
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252 | A Software License applies to the Geant4 code. |
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253 | The details and the list of copyright holders is available at |
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254 | <A href="http://cern.ch/geant4/license">http://cern.ch/geant4/license</A> |
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255 | and also in a text file <TT>LICENSE</TT> distributed with the source code. |
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256 | |
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257 | <P> </P> |
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258 | <A NAME="9."></A> |
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259 | <HR> |
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260 | |
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261 | <!-- ============================================== --> |
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262 | |
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263 | <H2>9. Detailed list of changes and fixes</H2> |
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264 | |
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265 | These are the main new features/fixes included in this release since the |
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266 | last patched public release (for the detailed list of fixes/additions, |
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267 | please refer to the related History files provided in most packages): |
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268 | |
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269 | <P> </P> |
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270 | |
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271 | <A NAME="conf-notes"> |
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272 | <H3><I>Configuration</I></H3></A> |
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273 | <UL> |
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274 | <LI>Protected generation of dependencies using internal <TT>make</TT> variable |
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275 | <TT>MAKECMDGOALS</TT> in <TT>binmake.gmk</TT> and <TT>common.gmk</TT>, |
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276 | following suggestion made in problem report #930. This protection resolves |
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277 | the problem of generation of dependencies when issueing the <TT>clean</TT> |
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278 | target.</LI> |
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279 | </UL> |
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280 | |
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281 | <A NAME="digits-notes"> |
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282 | <H3><I>Digitization & Hits</I></H3></A> |
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283 | <UL> |
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284 | <LI>Fixed way of counting outward steps in flux scorers.</LI> |
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285 | </UL> |
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286 | |
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287 | <A NAME="emstd-notes"> |
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288 | <H3><I>Electromagnetic Processes (High-energy and Standard)</I></H3></A> |
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289 | <UL> |
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290 | <LI><B>Muons</B> |
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291 | <UL> |
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292 | <LI><TT>G4MuPairProductionModel</TT>: added protection against zero or |
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293 | negative partial cross section inside <TT>SelectRandomAtom()</TT> |
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294 | method. Fixes problem reported when runnning tutorial example A01.</LI> |
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295 | <LI>Set <TT>linLossLimit</TT> to <TT>1.E-6</TT> in |
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296 | <TT>G4EnergyLossForExtrapolator</TT>.</LI> |
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297 | </UL></LI> |
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298 | <LI><B>Polarisation</B> |
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299 | <UL> |
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300 | <LI><TT>G4PolarizedGammaConversionModel</TT>: fixed non-initialised |
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301 | variable.</LI> |
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302 | </UL></LI> |
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303 | <LI><B>Standard</B> |
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304 | <UL> |
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305 | <LI><TT>G4UrbanMscModel</TT>: |
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306 | <UL> |
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307 | <LI>Fix in the single scattering code for heavy particles, now the code |
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308 | can be used with skin=1 e+/e- and for heavy particles as well.</LI> |
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309 | <LI>Added protections against NaN values in two places: sampling of |
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310 | <TT>theta</TT> when <TT>tau=0</TT> in lateral displacement, and in |
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311 | method <TT>ComputeTrueStepLength()</TT> for the case of zero true |
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312 | length.</LI> |
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313 | <LI>Stepping algorithm changed for <TT>skin=0</TT>, now there are 3 |
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314 | stepping modes: |
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315 | <OL> |
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316 | <LI>Stepping similar to that performed in release 7.1;</LI> |
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317 | <LI><TT>skin=0</TT> - designed for high energy simulations with or |
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318 | without magnetic field;</LI> |
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319 | <LI><TT>skin=1</TT> - designed for 'precision' simulations without |
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320 | magnetic field.</LI> |
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321 | </OL></LI> |
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322 | <LI>If <TT>skin>1</TT>, perform small steps with single scattering before |
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323 | and after boundary the boundary. The step is reduced before boundary |
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324 | for <TT>geomlimit</TT> less than <TT>geombig</TT> only.</LI> |
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325 | <LI>Use <TT>tPathLength</TT> inside <TT>ComputeStep()</TT> instead of |
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326 | <TT>geombig</TT>.</LI> |
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327 | </UL></LI> |
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328 | <LI><TT>G4MultipleScattering, G4hMultipleScattering</TT>: |
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329 | <UL> |
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330 | <LI>Use <TT>skin</TT> parameter from the base class (default |
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331 | <TT>skin=0</TT>).</LI> |
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332 | </UL></LI> |
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333 | <LI><TT>G4eBremsstrahlungModel</TT>: |
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334 | <UL> |
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335 | <LI>Added reinitialisation of LPM flag between runs.</LI> |
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336 | <LI>Corrected <TT>LPMconstant</TT> by factor 2 (according to SLAC |
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337 | recent publication).</LI> |
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338 | </UL></LI> |
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339 | <LI><TT>G4BetheHeitlerModel</TT>: for any initial energy select atom of |
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340 | the material on which conversion occur (needed for polarisation |
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341 | module).</LI> |
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342 | <LI><TT>G4UniversalFluctuation</TT>: <TT>GLANDZ</TT> part of the |
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343 | fluctuation model has been completely rewritten, there is no longer |
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344 | distinct loss regime.</LI> |
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345 | <LI><TT>G4hIonisation</TT>: removed dependence on K+ and K- particles.</LI> |
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346 | </UL></LI> |
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347 | <LI><B>Utils</B> |
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348 | <UL> |
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349 | <LI><TT>G4VEnergyLossProcess</TT>: |
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350 | <UL> |
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351 | <LI>Use <TT>G4SafetyHelper</TT> instead of <TT>G4Navigator</TT> for |
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352 | determining distance to boundary, and added protection agains zero |
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353 | step length.</LI> |
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354 | </UL></LI> |
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355 | <LI><TT>G4VMultipleScattering</TT>: |
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356 | <UL> |
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357 | <LI>Added protection against zero step or energy.</LI> |
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358 | <LI>Added <TT>SetSkin()</TT> and <TT>Skin()</TT> methods.</LI> |
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359 | </UL></LI> |
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360 | <LI><TT>G4EmModelManager</TT>: added <TT>maxCutInRange</TT> variable for |
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361 | sub-cutoff option.</LI> |
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362 | <LI><TT>G4EmCalculator</TT>: added method <TT>ComputeEnergyCutFromRangeCut()</TT>.</LI> |
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363 | <LI><TT>G4EnergyLossMessenger</TT>: send message <TT>/run/physicsModified</TT> |
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364 | after all commands requiring reinitialisation.</LI> |
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365 | <LI><TT>G4LossTableManager, G4EmProcessOptions, G4EnergyLossMessenger</TT>: |
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366 | added commands for <TT>MscLateralDisplacement</TT>, <TT>MscSkin</TT> |
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367 | and <TT>linearLossLimit</TT>.</LI> |
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368 | <LI><TT>G4LossTableBuilder</TT>: use more precise algorithm to build |
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369 | inverse range table using <TT>G4LPhysicsFreeVector</TT>.</LI> |
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370 | <LI><TT>G4EmCorrections</TT>: taking mass of ion from <TT>G4IonTable</TT> |
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371 | to avoid division by zero.</LI> |
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372 | </UL></LI> |
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373 | </UL> |
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374 | |
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375 | <A NAME="evt-notes"> |
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376 | <H3><I>Event</I></H3></A> |
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377 | <UL> |
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378 | <LI>Prevent from unnecessary creation of <TT>G4String</TT> objects in |
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379 | <TT>G4Event</TT>, which were default for random number status. |
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380 | Use new flag in <TT>G4EventManager</TT>.</LI> |
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381 | </UL> |
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382 | |
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383 | <A NAME="gen-notes"> |
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384 | <H3><I>General Processes: Cuts, Scoring</I></H3></A> |
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385 | <UL> |
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386 | <LI><B>Cuts</B> |
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387 | <UL> |
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388 | <LI>Added method <TT>ConvertRangeToEnergy()</TT> to |
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389 | <TT>G4ProductionCutsTable</TT>.</LI> |
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390 | </UL></LI> |
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391 | <LI><B>Scoring</B> |
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392 | <UL> |
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393 | <LI>Fix to set step status for ghost pre-step point.</LI> |
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394 | </UL></LI> |
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395 | </UL> |
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396 | |
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397 | <A NAME="geo-notes"> |
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398 | <H3><I>Geometry</I></H3></A> |
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399 | <UL> |
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400 | <LI><B>Magnetic field</B> |
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401 | <UL> |
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402 | <LI>Corrected integration constants in <TT>G4MagHelicalStepper</TT>.</LI> |
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403 | <LI>Added implementation of <TT>G4RKG3_Stepper</TT>, stepper derived |
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404 | from Geant3.</LI> |
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405 | <LI><TT>G4MagIntegratorDriver</TT>: added protections against zero initial |
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406 | or internal step <TT>h=0</TT>; revised (re)calculation of <TT>h</TT>, |
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407 | and protect more against very small steps.</LI> |
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408 | </UL></LI> |
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409 | <LI><B>Management</B> |
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410 | <UL> |
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411 | <LI>Added accessors to stores for retrivial of volumes/solid by name.</LI> |
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412 | <LI>Modified signature of <TT>G4VPhysicalVolume::CheckOverlaps()</TT> to |
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413 | introduce ability of handling tolerances for overlaps.</LI> |
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414 | <LI>Do not reset <TT>RegionRootFlag</TT> in <TT>RemoveRootLogicalVolume()</TT> |
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415 | if volume is the world, since the volume itself may be already removed |
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416 | from the store if <TT>G4LogicalVolumeStore::Clean()</TT> is called.</LI> |
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417 | </UL></LI> |
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418 | <LI><B>Navigation</B> |
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419 | <UL> |
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420 | <LI>In G4Navigator, forcing call to <TT>CheckOverlaps()</TT> on the current |
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421 | volume before event abortion for cases of stuck tracks.</LI> |
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422 | <LI><TT>G4PropagatorInField</TT>: implemented <TT>ClearPropagatorState()</TT> |
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423 | to clear track-dependent state (safety, zero-steps, loop flag. etc...). |
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424 | Call to this method becomes mandatory in <TT>G4Transportation</TT> for |
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425 | each new track to overcome side effects of safety inconsistency in |
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426 | presence of geometry overlaps.</LI> |
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427 | <LI>Fixed case of out of range access in <TT>G4GeomTestSegment</TT> |
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428 | responsible for crashes observed when recursive-grid test for overlaps |
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429 | was run. Addressing problem report #784.</LI> |
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430 | </UL></LI> |
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431 | <LI><B>Solids (Specific)</B> |
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432 | <UL> |
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433 | <LI>Introduced new shape <TT>G4ExtrudedSolid</TT>, a solid representing |
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434 | the extrusion of an arbitrary polygon with fixed outline and |
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435 | multiple Z sections.</LI> |
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436 | <LI>G4TessellatedSolid: |
---|
437 | <UL> |
---|
438 | <LI>Made relevant solid's methods virtual, to be used as base |
---|
439 | class.</LI> |
---|
440 | <LI>Added implementation for <TT>GetSurfaceArea()</TT> and |
---|
441 | <TT>GetPointOnSurface()</TT> methods.</LI> |
---|
442 | <LI>Added protection in <TT>SurfaceNormal()</TT> method in case |
---|
443 | of facet not found.</LI> |
---|
444 | <LI>Check and return <TT>kOutside</TT> in <TT>Inside()</TT> if |
---|
445 | point out of solid's extent.</LI> |
---|
446 | <LI>Bug fix in <TT>G4TriangularFacet::Intersect()</TT> to allow |
---|
447 | for correct update of <TT>Distance</TT> in condition. Cleared |
---|
448 | unecessary declaration of <TT>IsInside()</TT> methods in both |
---|
449 | <TT>G4TriangularFacet</TT> and <TT>G4QuadrangularFacet</TT>.</LI> |
---|
450 | <LI>Fix in <TT>G4PolyconeSide::DistanceAway()</TT> for correct |
---|
451 | estimation of distance for the case of <TT>Phi</TT> sections. |
---|
452 | Addresses problem report #598.</LI> |
---|
453 | <LI>Fix in <TT>GetPointOnSurface()</TT> for <TT>G4Polycone</TT> to |
---|
454 | consider also points laying on rings when consecutive |
---|
455 | <TT>Z</TT>-sections are coincident. Added method |
---|
456 | <TT>GetPointOnRing()</TT>.</LI> |
---|
457 | </UL></LI> |
---|
458 | </UL></LI> |
---|
459 | <LI><B>Volumes</B> |
---|
460 | <UL> |
---|
461 | <LI>Extensions to the <TT>CheckOverlaps()</TT> algorithm: |
---|
462 | <UL> |
---|
463 | <LI>Added possibility to define a tolerance for reporting overlaps; |
---|
464 | added new argument to signature, by default tolerance is set to |
---|
465 | zero.</LI> |
---|
466 | <LI>Optimised implementation for detecting daughter volumes which are |
---|
467 | totally overlapping and checked in sequence.</LI> |
---|
468 | <LI>Added check on current volume to optimise and correctly handle the |
---|
469 | case of explicit call of the method when geometry is constructed.</LI> |
---|
470 | <LI>Made warning message more clear.</LI> |
---|
471 | </UL></LI> |
---|
472 | </UL></LI> |
---|
473 | </UL> |
---|
474 | |
---|
475 | <A NAME="glob-notes"> |
---|
476 | <H3><I>Global</I></H3></A> |
---|
477 | <UL> |
---|
478 | <LI>Added <TT>G4TwoVector</TT> type, typef of CLHEP's <TT>Hep2Vector</TT> |
---|
479 | class.</LI> |
---|
480 | <LI>Changed date for release 8.3.</LI> |
---|
481 | </UL> |
---|
482 | |
---|
483 | <A NAME="greps-notes"> |
---|
484 | <H3><I>Graphical Representations</I></H3></A> |
---|
485 | <UL> |
---|
486 | <LI><TT>G4VisAttributes</TT>: |
---|
487 | <UL> |
---|
488 | <LI>Bug fix in <TT>SetForceLineSegmentsPerCircle()</TT>; now correctly |
---|
489 | implementing the reset.</LI> |
---|
490 | <LI>Minor refinement: introduced <TT>IsForceLineSegmentsPerCircle()</TT> |
---|
491 | method.</LI> |
---|
492 | </UL></LI> |
---|
493 | <LI><TT>G4Colour</TT>: replaced static data members by static functions that |
---|
494 | create and copy out the relevant colours.</LI> |
---|
495 | </UL> |
---|
496 | |
---|
497 | <A NAME="had-notes"> |
---|
498 | <H3><I>Hadronic Processes</I></H3></A> |
---|
499 | <UL> |
---|
500 | <LI>Added model name for hadronic whiteboard error reporting.</LI> |
---|
501 | <LI><B>Cross sections</B> |
---|
502 | <UL> |
---|
503 | <LI>Extend user-chosen isotope abundance capability to several classes: |
---|
504 | <TT>G4UPiNuclearCrossSection</TT>, <TT>G4UInelasticCrossSection</TT>, |
---|
505 | <TT>G4UElasticCrossSection</TT>, <TT>G4GlauberGribovCrossSection</TT>, |
---|
506 | <TT>G4NucleonNuclearCrossSection</TT>.</LI> |
---|
507 | <LI><TT>G4PiNuclearCrossSection</TT>: removed special treatment ('tuning') for |
---|
508 | Copper (Z=29),i.e. the <TT>Cu</TT> cross section is no longer lowered |
---|
509 | by 4%.</LI> |
---|
510 | <LI>New classes added: |
---|
511 | <UL> |
---|
512 | <LI><TT>G4BGGNucleonElasticXS</TT>: |
---|
513 | provided proton and neutron elastic and cross section class |
---|
514 | (<TT>G4BGGNucleonElasticXS</TT>) which uses the Barashenkov |
---|
515 | parameterization below 100 GeV and Glauber-Gribov model above.</LI> |
---|
516 | <LI>also provided proton and neutron inelastic cross sections |
---|
517 | (<TT>G4BGGNucleonInelasticXS</TT>), pion elastic cross sections |
---|
518 | (<TT>G4BGGPionElasticXS</TT>), and pion inelastic cross sections |
---|
519 | (<TT>G4BGGPionInelasticXS</TT>) which combine the Barashenkov |
---|
520 | parameterization below 100 GeV and Glauber-Gribov model above.</LI> |
---|
521 | <LI><TT>G4NucleonNuclearCrossSection</TT> which contains Barashenkov |
---|
522 | cross sections for nucleon-nucleus scattering</LI> |
---|
523 | </UL></LI> |
---|
524 | <LI>Added protection against division by zero in method |
---|
525 | <TT>G4CrossSectionDataStore::SelectRandomIsotope()</TT>.</LI> |
---|
526 | <LI>Added handling of user-defined isotope abundances for elements and |
---|
527 | proper cross section and abundance weighted choice of isotopes in |
---|
528 | reactions. New virtual methods for <TT>IsApplicable()</TT> and |
---|
529 | <TT>GetCrossSections()</TT> added to classes |
---|
530 | <TT>G4VCrossSectionDataSet</TT> and <TT>G4CrossSectionDataStore</TT>.</LI> |
---|
531 | <LI><TT>G4HadronCrossSections::GetParticleCode()</TT>: following report from CMS, |
---|
532 | replaced code which tested by particle name with more performant code |
---|
533 | that tests by PDG ID. Also, use switch-case instead of else-if.</LI> |
---|
534 | </UL></LI> |
---|
535 | <LI><B>Management</B> |
---|
536 | <UL> |
---|
537 | <LI><TT>G4HadronicProcess</TT>: |
---|
538 | <UL> |
---|
539 | <LI>Removed unused <TT>AlwaysKillLeadingHadron()</TT> method.</LI> |
---|
540 | <LI>Fixed bug which was killing primaries in elastic scattering.</LI> |
---|
541 | <LI>Fix weighting error in leading particle killer.</LI> |
---|
542 | <LI>Added handling of user-defined isotopes: re-implemented methods |
---|
543 | <TT>GetMeanFreePath()</TT> and <TT>ChooseAandZ()</TT> to use new |
---|
544 | methods in <TT>G4CrossSectionDataStore</TT>.</LI> |
---|
545 | <LI>No longer use dispatch pointer to call data store methods.</LI> |
---|
546 | <LI>Remove data members <TT>currentZ</TT>, <TT>currentN</TT> and methods |
---|
547 | <TT>GetCurrentZ()</TT>, <TT>GetCurrentN()</TT>. They are no |
---|
548 | longer needed.</LI> |
---|
549 | </UL></LI> |
---|
550 | </UL></LI> |
---|
551 | <LI><B>Binary Cascade</B> |
---|
552 | <UL> |
---|
553 | <LI>Added protection against integrating zero <TT>timeStep</TT> in |
---|
554 | <TT>G4RKPropagation</TT>. This used to cause in some cases division |
---|
555 | by zero in integration.</LI> |
---|
556 | </UL></LI> |
---|
557 | <LI><B>Cascade</B> |
---|
558 | <UL> |
---|
559 | <LI>Added protection in <TT>G4ElementaryParticleCollider</TT> against negative |
---|
560 | value to <TT>sqrt()</TT>.</LI> |
---|
561 | </UL></LI> |
---|
562 | <LI><B>Chiral Invariant Phase Space (CHIPS)</B> |
---|
563 | <UL> |
---|
564 | <LI>Fix for NaN, protected coulomb barrier against divide by zero, now |
---|
565 | defaults to zero. Fix for NaN in <TT>G4QNucleus</TT> when using |
---|
566 | <TT>pow()</TT> and in <TT>G4QEnvironment</TT>.</LI> |
---|
567 | <LI>Completed implementation of G4QuasiFreeRatios which enables |
---|
568 | quasi-elastic scattering.</LI> |
---|
569 | <LI>To avoid early particle definition the CHIPS world is now created |
---|
570 | at run time in the processes <TT>G4QElastic</TT>, <TT>G4QCollision</TT>, |
---|
571 | and <TT>G4QCaptureAtRest</TT>.</LI> |
---|
572 | <LI><TT>G4QElastic</TT>: |
---|
573 | <UL> |
---|
574 | <LI>Fix for mis-use of units.</LI> |
---|
575 | <LI>Treat particles with <TT>E=0</TT> as alive for tracking purposes.</LI> |
---|
576 | </UL></LI> |
---|
577 | <LI>CHIPS model for muon capture now available. It is handled by |
---|
578 | <TT>G4QCaptureAtRest</TT>.</LI> |
---|
579 | <LI>Bug fix for muon-nuclear interactions.</LI> |
---|
580 | <LI>Bug fix for binomial distribution with <TT>p=1,q=0</TT> in <TT>G4QNucleus</TT>.</LI> |
---|
581 | </UL></LI> |
---|
582 | <LI><B>Elastic scattering</B> |
---|
583 | <UL> |
---|
584 | <LI>Speed up coherent hadron-nucleus scattering (<TT>G4ElasticHadrNucleusHE</TT>) |
---|
585 | by using iterator search on bin instead of computing <TT>log()</TT>.</LI> |
---|
586 | <LI><TT>G4HadronElastic</TT>: |
---|
587 | <UL> |
---|
588 | <LI>Use the most probable isotope for given Z to call the high energy part |
---|
589 | of the model (CPU/memory more efficient).</LI> |
---|
590 | <LI>HElastic model for projectile energy above 1 <TT>GeV</TT> is used |
---|
591 | for all targets with <TT>Z>1</TT>.</LI> |
---|
592 | </UL></LI> |
---|
593 | <LI><TT>G4UHadronElasticProcess</TT>: fixed bug in number of neutrons in |
---|
594 | CHIPS interface.</LI> |
---|
595 | <LI><TT>G4HadronElastic</TT>, <TT>G4ChargeExchange</TT>: more accurately |
---|
596 | compute Z and A.</LI> |
---|
597 | <LI><TT>G4UHadronElasticProcess</TT> and <TT>G4ChargeExchangeProcess</TT>: |
---|
598 | <UL> |
---|
599 | <LI>Fixed bug of undefined isotope vector</LI> |
---|
600 | <LI>Migrated to interface for isotope-dependent cross sections; |
---|
601 | do not use QElastic total cross sections in |
---|
602 | <TT>G4ChargeExchangeProcess</TT>.</LI> |
---|
603 | </UL></LI> |
---|
604 | </UL></LI> |
---|
605 | <LI><B>High Energy</B> |
---|
606 | <UL> |
---|
607 | <LI>Added <TT>G4QuasiElasticChannel</TT> to simulate quasi-elastic |
---|
608 | scattering. Relies on CHIPS class <TT>G4QuasiFreeRatios</TT>.</LI> |
---|
609 | <LI>Modified <TT>G4TheoFSGenerator</TT> to use <TT>G4QuasiElasticChannel</TT> |
---|
610 | and add quasi-elastic scattering for string models, and use these in |
---|
611 | competition to the string model.</LI> |
---|
612 | </UL></LI> |
---|
613 | <LI><B>Low Energy</B> |
---|
614 | <UL> |
---|
615 | <LI><TT>G4LEAntiProtonInelastic</TT>: for low energy (< 0.1 MeV) |
---|
616 | anti-protons, the model was simply returning the particle change which |
---|
617 | had not yet been initialized, thus leading to an infinite loop. Now |
---|
618 | model returns particle change initialized from the original kinematics. |
---|
619 | Addresses problem report #888.</LI> |
---|
620 | <LI>All Low Energy models: added model name to constructor for use in |
---|
621 | traceback and debugging.</LI> |
---|
622 | <LI><TT>G4LElastic</TT>: added protection against <TT>sqrt()</TT> of |
---|
623 | negative value.</LI> |
---|
624 | </UL></LI> |
---|
625 | <LI><B>Parton String</B> |
---|
626 | <UL> |
---|
627 | <LI>Several modifications made to <TT>G4VLongitudinalStringFragmentation</TT> |
---|
628 | for use in FTF model. This was taken from the original QGS code.</LI> |
---|
629 | <LI>Revised FTF model now available. Single diffraction was added and |
---|
630 | hadronization was improved. Management and qgsm modules also affected.</LI> |
---|
631 | <LI><TT>G4ExcitedStringDecay::EnergyAndMomentumCorrector()</TT>, no longer |
---|
632 | causes exception when not converging. Added more info when failing and |
---|
633 | return correct status. Added protection in <TT>G4ExcitedStringDecay</TT> |
---|
634 | against division by 0.</LI> |
---|
635 | </UL></LI> |
---|
636 | <LI><B>Pre-Compound</B> |
---|
637 | <UL> |
---|
638 | <LI>Added protection against division by zero in |
---|
639 | <TT>G4PreCompoundTransitions</TT>.</LI> |
---|
640 | </UL></LI> |
---|
641 | <LI><B>Utils</B> |
---|
642 | <UL> |
---|
643 | <LI><TT>G4HadronicWhiteboard</TT>: added methods to set process and model |
---|
644 | names.</LI> |
---|
645 | <LI><TT>G4ReactionDynamics</TT>: added pi0 to anti-particle test.</LI> |
---|
646 | </UL></LI> |
---|
647 | </UL> |
---|
648 | |
---|
649 | <A NAME="part-notes"> |
---|
650 | <H3><I>Particles</I></H3></A> |
---|
651 | <UL> |
---|
652 | <LI>Added protection against negative argument to <TT>sqrt()</TT> in |
---|
653 | <TT>G4DecayProducts::Boost()</TT>.</LI> |
---|
654 | </UL> |
---|
655 | |
---|
656 | <A NAME="lst-notes"> |
---|
657 | <H3><I>Physics lists</I></H3></A> |
---|
658 | <UL> |
---|
659 | <LI>Added quasi-elastic in QGSP physics list; this required changes to: |
---|
660 | <UL> |
---|
661 | <LI>QGSP{proton,Neutron,PiK} Builder, adding <TT>QuasiElasticChannel</TT> on |
---|
662 | conditional flag.</LI> |
---|
663 | <LI><TT>HadronPhysicsQGSP</TT> passes flag (default=<TT>false</TT>) to |
---|
664 | Builders.</LI> |
---|
665 | <LI>QGSP uses flag to include quasi-elastic.</LI> |
---|
666 | </UL></LI> |
---|
667 | <LI>New list QGSP_NQSE, a copy of QGSP without quasi-elastic.</LI> |
---|
668 | <LI>For QGSC, QGSC_EMV, and QGSC_EFLOW enable use of <TT>G4QCaptureAtRest()</TT> |
---|
669 | also for muons. Changes made in <TT>G4QStoppingPhysics</TT> as well.</LI> |
---|
670 | <LI>Modifications for Quasi-elastic. Added to all QGS physics lists execpt |
---|
671 | the two obsolete QGSC_LEAD/QGSC_LEAD_HP. This also required adapting of |
---|
672 | <TT>HadronsPhysicsXYZ</TT> and {QGSP;QGSC;QGSC_EFLOW}{Neutron,Proton,PiK} |
---|
673 | Builders.</LI> |
---|
674 | <LI>Removed unnecessary <TT>HadronPhysics...{EMV,EMX}</TT> classes.</LI> |
---|
675 | <LI>Adopting recent upgrades in QGS and FTF for the QBBC physics list.</LI> |
---|
676 | <LI>Set <TT>skin</TT> to zero in <TT>G4EmStandardPhysics7</TT> (i.e. no use |
---|
677 | of <TT>ComputeStep()</TT> in multiple-scattering).</LI> |
---|
678 | <LI><TT>G4HadronHElasticPhysics</TT> uses new cross section classes |
---|
679 | <TT>G4BGGNucleonElasticXS</TT> and <TT>G4BGGPionElasticXS</TT>.</LI> |
---|
680 | <LI><TT>G4HadronElasticPhysics</TT>: set limits on low energy and QElastic |
---|
681 | to zero.</LI> |
---|
682 | <LI>Fixed special cuts for LBE physics list.</LI> |
---|
683 | <LI>Added set min/max Energy and Inelastic Energy to NeutronHP builder.</LI> |
---|
684 | <LI><TT>G4EmStandardPhysics</TT>: |
---|
685 | <UL> |
---|
686 | <LI>Use <TT>G4hMultipleScattering</TT> for muons and removed extra |
---|
687 | printouts.</LI> |
---|
688 | <LI>Use default multiple-scattering setup in <TT>G4EmStandardPhysics72</TT>.</LI> |
---|
689 | <LI>Use <TT>skin=0</TT> (no use of <TT>ComputeStep()</TT> in |
---|
690 | multiple-scattering) in <TT>G4EmStandardPhysics</TT> and |
---|
691 | <TT>G4EmStandardPhysics71</TT>.</LI> |
---|
692 | </UL></LI> |
---|
693 | <LI>Added new physics list QGSP_BERT_TRV, based on QGSP_BERT, but changing |
---|
694 | to Bertini Cascade occurs at 5.0-5.4 <TT>GeV</TT> for proton, neutron, |
---|
695 | pion and kaon.</LI> |
---|
696 | <LI>Increased version number to 5.2.</LI> |
---|
697 | </UL> |
---|
698 | |
---|
699 | <A NAME="run-notes"> |
---|
700 | <H3><I>Run</I></H3></A> |
---|
701 | <UL> |
---|
702 | <LI>Prevent from unnecessary creation of <TT>G4String</TT> objects in |
---|
703 | <TT>G4Event</TT>, which were default for random number status.</LI> |
---|
704 | <LI>Added new <TT>G4RunManager</TT> flag and corresponding UI command.</LI> |
---|
705 | </UL> |
---|
706 | |
---|
707 | <A NAME="vis-notes"> |
---|
708 | <H3><I>Visualization</I></H3></A> |
---|
709 | <UL> |
---|
710 | <LI><B>Management</B> |
---|
711 | <UL> |
---|
712 | <LI>Added command <TT>/vis/abortReviewKeptEvents</TT> and improved |
---|
713 | guidance of command <TT>/vis/reviewKeptEvents</TT>.</LI> |
---|
714 | <LI>Introduced command <TT>/vis/geometry/set/forceLineSegmentsPerCircle</TT>.</LI> |
---|
715 | <LI>Fixed bug concerning call to <TT>/vis/open</TT> in |
---|
716 | <TT>/vis/reviewKeptEvents</TT> loop.</LI> |
---|
717 | <LI><TT>G4VSceneHandler</TT>: |
---|
718 | <UL> |
---|
719 | <LI>Introduced utility <TT>LoadAtts()</TT> for <TT>G4AttValues</TT> |
---|
720 | and <TT>G4AttDefs</TT>.</LI> |
---|
721 | <LI>Improved other utilities (changed signature of |
---|
722 | <TT>GetLineWidth()</TT>).</LI> |
---|
723 | </UL></LI> |
---|
724 | <LI>Reduced WARNING noise and other minor improvements.</LI> |
---|
725 | </UL></LI> |
---|
726 | <LI><B>Modeling</B> |
---|
727 | <UL> |
---|
728 | <LI>Bug fix: corrected treatment of <TT>ForcedLineSegmentsPerCircle</TT> |
---|
729 | when clipping.</LI> |
---|
730 | </UL></LI> |
---|
731 | <LI><B>OpenGL</B> |
---|
732 | <UL> |
---|
733 | <LI>Implemented bitmap markers (for <TT>MarkerSizeType == screen</TT>).</LI> |
---|
734 | <LI>Bug fix: added missing break in X colormap lookup routine.</LI> |
---|
735 | <LI>Adapted to change of signature of <TT>GetLineWidth()</TT>.</LI> |
---|
736 | <LI>Fixed Windows problem with <TT>DBL_MAX</TT> and compilation warnings.</LI> |
---|
737 | <LI><TT>G4OpenGLXViewer</TT>: Small bug fix in <TT>print()</TT>; |
---|
738 | context was switched but not switched back.</LI> |
---|
739 | </UL></LI> |
---|
740 | <LI><B>OpenInventor</B> |
---|
741 | <UL> |
---|
742 | <LI>Moved <TT>LoadAtts()</TT> to vis management module.</LI> |
---|
743 | </UL></LI> |
---|
744 | <LI><B>RayTracer</B> |
---|
745 | <UL> |
---|
746 | <LI>Bug fix: use of window size hints.</LI> |
---|
747 | </UL></LI> |
---|
748 | <LI><B>ASCIITree</B> |
---|
749 | <UL> |
---|
750 | <LI>Bug fix: format of total mass.</LI> |
---|
751 | </UL></LI> |
---|
752 | </UL> |
---|
753 | |
---|
754 | <A NAME="ex-notes"> |
---|
755 | <H3><I>Examples</I></H3></A> |
---|
756 | <UL> |
---|
757 | <LI>Updated reference outputs.</LI> |
---|
758 | <LI><B>extended</B> |
---|
759 | <UL> |
---|
760 | <LI>electromagnetic/TestEm2 |
---|
761 | <UL> |
---|
762 | <LI>Uncommented hadron ionisation in Livermore builder.</LI> |
---|
763 | </UL></LI> |
---|
764 | <LI>electromagnetic/TestEm3 |
---|
765 | <UL> |
---|
766 | <LI>Fixed compilation problem on SUN.</LI> |
---|
767 | <LI>Added command <TT>/testem/run/limitEdep</TT> allowing to compute |
---|
768 | restricted mean values to supress big statistical fluctuations.</LI> |
---|
769 | <LI>Updated command <TT>/testem/run/acceptance</TT>.</LI> |
---|
770 | <LI>Parameter <TT>skin=1</TT> is set as default PhysList.</LI> |
---|
771 | <LI>Added macro <TT>emtutor.mac</TT>.</LI> |
---|
772 | <LI>Added physics-lists names: penelope, livermore.</LI> |
---|
773 | <LI>Restored random seed storage.</LI> |
---|
774 | <LI>By default do not store random seed and do not activate VisManager |
---|
775 | in batch.</LI> |
---|
776 | <LI>Added <TT>G4standard_exp</TT> PhysList. Added material Lucite.</LI> |
---|
777 | <LI>Return Z-position computation.</LI> |
---|
778 | </UL></LI> |
---|
779 | <LI>electromagnetic/TestEm5 |
---|
780 | <UL> |
---|
781 | <LI>Use all default values in default PhysList.</LI> |
---|
782 | <LI>Use hadronic builders from physics_lists library.</LI> |
---|
783 | </UL></LI> |
---|
784 | <LI>electromagnetic/TestEm7 |
---|
785 | <UL> |
---|
786 | <LI>Parameter <TT>skin=1</TT> is set as default PhysList.</LI> |
---|
787 | <LI>Added physics-lists names: penelope, livermore.</LI> |
---|
788 | <LI>Fixed usage of elastic builders in PhysicsList.</LI> |
---|
789 | </UL></LI> |
---|
790 | <LI>electromagnetic/TestEm9 |
---|
791 | <UL> |
---|
792 | <LI>Compute truncated mean values to reduce statistical fluctuations |
---|
793 | and fixed output of statistics.</LI> |
---|
794 | <LI>Added physics-lists names: penelope, livermore.</LI> |
---|
795 | <LI>Uncommented hadron ionisation in Livermore builder.</LI> |
---|
796 | </UL></LI> |
---|
797 | <LI>electromagnetic/TestEm12 |
---|
798 | <UL> |
---|
799 | <LI>Uncommented hadron ionisation in Livermore builder.</LI> |
---|
800 | <LI><TT>HistoManager</TT>: by default, get <TT>csdaRange</TT> from |
---|
801 | <TT>G4EmCalculator</TT>.</LI> |
---|
802 | </UL></LI> |
---|
803 | <LI>electromagnetic/TestEm13, TestEm14 |
---|
804 | <UL> |
---|
805 | <LI><TT>vis.mac</TT>: suppressed command drawTracks.</LI> |
---|
806 | </UL></LI> |
---|
807 | <LI>electromagnetic/TestEm15 |
---|
808 | <UL> |
---|
809 | <LI>SteppingAction: added protection if no lateral displacement.</LI> |
---|
810 | </UL></LI> |
---|
811 | <LI>electromagnetic/TestEm18 |
---|
812 | <UL> |
---|
813 | <LI>New example allowing for studying the energy lost by a charged |
---|
814 | particle in a single layer, due to ionization and bremsstrahlung. |
---|
815 | Results are compared to 'reference' values.</LI> |
---|
816 | </UL></LI> |
---|
817 | <LI>field/field03 |
---|
818 | <UL> |
---|
819 | <LI>Fixed bug in <TT>F03FieldSetup</TT> for the activation of local |
---|
820 | fields.</LI> |
---|
821 | </UL></LI> |
---|
822 | <LI>hadronic/Hadr01 |
---|
823 | <UL> |
---|
824 | <LI>PhysicsList update according to QBBC and quasi-elastic |
---|
825 | modifications.</LI> |
---|
826 | <LI>Fix in QGSP_BIC_HP physics list. |
---|
827 | Addressing problem report #937.</LI> |
---|
828 | </UL></LI> |
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829 | <LI>medical/fanoCavity |
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830 | <UL> |
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831 | <LI>New example for computing the dose deposited in an ionization |
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832 | chamber by a monoenergetic photon beam.</LI> |
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833 | </UL></LI> |
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834 | <LI>radioactivedecay/exrdm |
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835 | <UL> |
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836 | <LI>Fixed usage of physics-lists.</LI> |
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837 | </UL></LI> |
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838 | <LI>runAndEvent |
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839 | <UL> |
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840 | <LI>RE01: Removed large-N reference output.</LI> |
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841 | </UL></LI> |
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842 | </UL></LI> |
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843 | </UL> |
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844 | |
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845 | <HR> |
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846 | |
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847 | </BODY> |
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848 | </HTML> |
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