Import Geant4 0.0.0 source tree

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+$Id: README,v 2.1 1998/12/10 04:12:53 verderi Exp $
+-------------------------------------------------------------------
+
+     =========================================================
+     Geant4 - an Object-Oriented Toolkit for Simulation in HEP
+     =========================================================
+
+                            ExampleN05
+                            ----------
+
+ExampleN05 provides examples of the use of parameterisation facilities.
+
+Geometry, sensitive detector, hits, processes are defined respectively in:
+
+	ExN05DetectorConstruction
+	ExN05CalorimeterSD
+	ExN05CalorimeterHit
+	ExN05PhysicsList
+
+The particularities are:
+
+      o The parameterisation models:
+
+	      o ExN05EMShowerModel which provides a crude
+		parameterisation for e+/e-/gamma. This model
+		is bound to the EM calorimeter.
+
+	      o ExN05PionShowerModel: an even more crude
+		parameterisation for pi+/pi-. This model
+		is bound to a ghost volume.
+
+		Those two models produces "hits": ie the energy
+		of the incident particle is distributed into
+		the volume of the envelope throught energy spots
+		(class ExN05EnergySpot), those energy spots being
+		recorded in the sensitive detector at this point
+		if any.
+
+		They are rather similar from a technical point of vue.
+		They both make use of a private G4Navigator to set
+		their energy spots into the sensitive volumes.
+		However, we don't take car of putting every spot into
+		a sensitive (which is recommended in a "serious"
+		parameterisation !).
+
+		Those two models trigger their parameterisation
+		on the first step the particle does in the envelope,
+		but it would be perfectly possible to wait that the
+		particle is far enough from the boundary of the envelope
+		for example.
+
+	      o ExN0PiModel: just there to show how a parameterisation
+		can create secondaries, but not used.
+
+      o ExN05PhysicsList: AddParameterisation(). A method which
+	sets the G4FastSimulationManagerProcess in the process
+	manager of all the particles. This process provides
+	the INTERFACE between the tracking and the parameterisation
+	models.
+
+      o ExN05DetectorConstruction: in the .cc file, the parameterisation
+	models are built and bound to envelopes:
+
+	      o ExN05EMShowerModel is bound to the electromagnetic
+		calorimeter
+
+	      o ExN05PionShowerModel is bound to a ghost volume
+		which encompasses the electromagnetic and
+		hadronic calorimters
+	
+
+