Import Geant4 8.1.0 source tree

environments/g4py/examples/emplot/eplot.py

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+#!/usr/bin/python
+# ==================================================================
+# An example of ploting by EmCalculator
+#
+# Plotting photon cross sections and stopping power
+# ==================================================================
+from Geant4 import *
+import ExN03pl
+import EmPlot
+
+# initialize
+EmPlot.Configure()
+
+# user physics list
+ExN03pl.Construct()
+
+# target material
+material= "G4_Cu"
+EmPlot.SetMaterial(material)
+
+# initialize G4 kernel
+gRunManager.Initialize()
+gRunManagerKernel.RunInitialization()
+
+# energy
+elist= []
+for n in range(-3, 3):
+  for i in range(10,99):
+    elist.append(i/10.*10.**n *MeV)
+
+# calculate stopping power
+pname= "e-"
+dedx_list= CalculateDEDX(pname, material, elist, 1)
+xlist_tot=[]
+xlist_ioni=[]
+xlist_brems=[]
+
+for x in dedx_list:
+  xlist_tot.append((x[0], x[1]["tot"]/(MeV*cm2/g)))
+  xlist_ioni.append((x[0], x[1]["ioni"]/(MeV*cm2/g)))
+  xlist_brems.append((x[0], x[1]["brems"]/(MeV*cm2/g)))
+
+# make plot
+myCanvas= EmPlot.init_root()
+aplot= EmPlot.make_plot(xlist_tot, pname+" Stopping Power ("+material+")",
+                        "dE/dX (MeV cm^{2}/g)")
+bplot= EmPlot.make_plot(xlist_ioni, "Stopping Power ("+material+")",
+                        "dE/dX (MeV cm^{2}/g)", 1)
+cplot= EmPlot.make_plot(xlist_brems, "Stopping Power ("+material+")",
+                        "dE/dX (MeV cm^{2}/g)", 3)
+