Import Geant4 11.0.0 source tree

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+///\file "runAndEvent/RE07/.README.txt"
+///\brief Example RE07 README page
+
+/*! \page ExampleRE07 Example RE07
+
+This example is based on extended/electromagnetic/TestEm3 and
+demonstrates how to register specialized tracking managers for
+a particle or a set of particles.
+
+\section RE07_s1 Geometry definition
+
+The geometry of a simplified sampling calorimeter is used as
+in \link ExampleTestEm3 TestEm3 \endlink, please refer to its
+documentation for more details.
+The same UI commands exist for modifying the geometry (number
+of layers and absorbers, material and its thickness), without
+the /testem/ prefix.
+
+In addition to the definition of the volumes, this example adds
+two regions, "Front" and "Back", which contain the front and
+rear half of the calorimeter.
+
+\section RE07_s2 Physics lists
+
+By default, the example uses G4EmStandardPhysics and registers
+processes to the G4ProcessManager. This can be changed with the
+/setMode UI command. Possible values are:
+
+- processes:   use G4EmStandardPhysics, the default
+- tracking:    use the same physics as G4EmStandardPhysics, but
+               implemented as a specialized tracking manager for
+               electrons, positrons, and gammas; see the file
+               EmStandardPhysicsTrackingManager.cc for details.
+- specialized: use a specialized tracking manager for gammas; for
+               the purpose of demonstration,
+               - it uses G4EmStandardPhysics as the basis,
+               - defers processing of gammas with a kinetic energy
+                 of more than 100 MeV,
+               - implement a specialized stepping loop for the
+                 "Back" region of the detector.
+               See the file SpecializedTrackingManager.cc for more
+               details on the exact implementation.
+
+\section RE07_s3 How to start?
+
+This example comes with one macro file for each of the described
+modes that can be passed as a parameter to the executable:
+
+\verbatim
+% exampleRE07 processes.mac
+\endverbatim
+
+*/
+
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+-------------------------------------------------------------------
+
+     =========================================================
+     Geant4 - an Object-Oriented Toolkit for Simulation in HEP
+     =========================================================
+
+                            ExampleRE07
+                            -----------
+
+This example is based on extended/electromagnetic/TestEm3 and
+demonstrates how to register specialized tracking managers for
+a particle or a set of particles.
+
+1- Geometry definition
+
+   The geometry of a simplified sampling calorimeter is used as
+   in TestEm3, please refer to its documentation for more details.
+   The same UI commands exist for modifying the geometry (number
+   of layers and absorbers, material and its thickness), without
+   the /testem/ prefix.
+
+   In addition to the definition of the volumes, this example adds
+   two regions, "Front" and "Back", which contain the front and
+   rear half of the calorimeter.
+
+2- Physics lists
+
+   By default, the example uses G4EmStandardPhysics and registers
+   processes to the G4ProcessManager. This can be changed with the
+   /setMode UI command. Possible values are:
+
+   processes:   use G4EmStandardPhysics, the default
+   tracking:    use the same physics as G4EmStandardPhysics, but
+                implemented as a specialized tracking manager for
+                electrons, positrons, and gammas; see the file
+                EmStandardPhysicsTrackingManager.cc for details.
+   specialized: use a specialized tracking manager for gammas; for
+                the purpose of demonstration,
+                - it uses G4EmStandardPhysics as the basis,
+                - defers processing of gammas with a kinetic energy
+                  of more than 100 MeV,
+                - implement a specialized stepping loop for the
+                  "Back" region of the detector.
+                See the file SpecializedTrackingManager.cc for more
+                details on the exact implementation.
+
+3- How to start?
+
+   This example comes with one macro file for each of the described
+   modes that can be passed as a parameter to the executable:
+
+    % exampleRE07 processes.mac