Gabriele Cosmo
88 lines
2.7 KiB
Plaintext
88 lines
2.7 KiB
Plaintext
$Id: README,v 1.6 2002/05/29 15:32:27 maire Exp $
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-------------------------------------------------------------------
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=========================================================
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Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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=========================================================
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TestEm4
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-------
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This example has been setup to test the low energy gamma processes.
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1- GEOMETRY DEFINITION
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It is a cylinder of 5 cm radius filled with C6F6.
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2- PHYSICS LIST
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The particle list contains only gamma, electron,positron.
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The physics list contains the 'standard' electromagnetic processes.
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3- AN EVENT : THE PRIMARY GENERATOR
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The primary kinematic is a single 9 MeV gamma randomly shooted at the
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middle of the cylinder.
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4- VISUALIZATION
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The Visualization Manager is set in the main().
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The initialisation of the drawing is done via the commands
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/vis/.. in the macro vis.mac. This macro is
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automatically read from the main in case of interactive running mode.
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The detector has a default view which is a transversal view of the
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cylinder.
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The tracks are drawn at the end of event, and erased at the end of run.
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Optionaly one can choose to draw all particles, only the charged one,
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or none. This command is defined in EventActionMessenger class.
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5- PHYSICS SURVEY
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the energy deposited in C6F6 is histogramed
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6- HOW TO START ?
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- compile and link to generate an executable
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% cd examples/extended/electromagnetic/TestEm4
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% gmake
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- execute TestEm4 in 'batch' mode from macro files
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% TestEm4 run01.mac
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- execute TestEm4 in 'interactive mode' with visualization
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% TestEm4
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....
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Idle> type your commands
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....
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Idle> exit
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- visualize the histogram
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paw> h/file 1 testem4.paw
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paw> option stat
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paw> option logy
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paw> h/pl 1
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Note that, histograms are disabled via the flag G4NOHIST in the GNUmakefile.
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7- Using the Anaphe implementation of the AIDA 2.2 histograms:
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--------------------------------------------------------------
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In order to use the Anaphe implementation of the AIDA 2.2 interfaces,
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prepare some environment variables by source-ing one of the following
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startup scripts (depending on your compiler version):
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# gcc-2.95.2
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source $LHCXXTOP/share/LHCXX/4.0.1/install/sharedstart.sh or .csh
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# egcs_1.1.2 (aka gcc 2.91.66)
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source $LHCXXTOP/share/LHCXX/4.0.1-sec/install/sharedstart.sh or .csh
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At CERN, $LHCXXTOP is /afs/cern.ch/sw/lhcxx, you may want to use a
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more recent release, check http:/cern.ch/anaphe for more information.
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After this, you will have access to the 'aida-config' command which
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is used in the GNUmakefile.
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