Updated test script and added macros for running with Geant4.

[u/mrichter/AliRoot.git] / MUON / genExtFileConfig.C

diff --git a/MUON/genExtFileConfig.C b/MUON/genExtFileConfig.C
new file mode 100644 (file)
index 0000000..16c37df
--- /dev/null
+++ b/MUON/genExtFileConfig.C
@@ -0,0 +1,104 @@
+/**************************************************************************
+ * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
+ *                                                                        *
+ * Author: The ALICE Off-line Project.                                    *
+ * Contributors are mentioned in the code where appropriate.              *
+ *                                                                        *
+ * Permission to use, copy, modify and distribute this software and its   *
+ * documentation strictly for non-commercial purposes is hereby granted   *
+ * without fee, provided that the above copyright notice appears in all   *
+ * copies and that both the copyright notice and this permission notice   *
+ * appear in the supporting documentation. The authors make no claims     *
+ * about the suitability of this software for any purpose. It is          *
+ * provided "as is" without express or implied warranty.                  *
+ **************************************************************************/
+
+/* $Id$ */
+
+/// \ingroup macros
+/// \file genExtFileConfig.C
+/// \brief Configuration macro for event generator from external file
+/// for MUON spectrometer Monte Carlo simulation
+
+// Functions
+Float_t EtaToTheta(Float_t arg);
+AliGenerator* GeneratorFactory();
+
+void genConfig()
+{
+  cout << "Running genExtFileConfig.C ... " << endl;
+
+  //=======================================================================
+  // ******* GEANT STEERING parameters FOR ALICE SIMULATION *******
+  if ( gMC ) {
+    gMC->SetProcess("DCAY",1);
+    gMC->SetProcess("PAIR",1);
+    gMC->SetProcess("COMP",1);
+    gMC->SetProcess("PHOT",1);
+    gMC->SetProcess("PFIS",0);
+    gMC->SetProcess("DRAY",0);
+    gMC->SetProcess("ANNI",1);
+    gMC->SetProcess("BREM",1);
+    gMC->SetProcess("MUNU",1);
+    gMC->SetProcess("CKOV",1);
+    gMC->SetProcess("HADR",1);
+    gMC->SetProcess("LOSS",2);
+    gMC->SetProcess("MULS",1);
+    gMC->SetProcess("RAYL",1);
+    Float_t cut = 1.e-3;        // 1MeV cut by default
+    Float_t tofmax = 1.e10;
+    gMC->SetCut("CUTGAM", cut);
+    gMC->SetCut("CUTELE", cut);
+    gMC->SetCut("CUTNEU", cut);
+    gMC->SetCut("CUTHAD", cut);
+    gMC->SetCut("CUTMUO", cut);
+    gMC->SetCut("BCUTE",  cut); 
+    gMC->SetCut("BCUTM",  cut); 
+    gMC->SetCut("DCUTE",  cut); 
+    gMC->SetCut("DCUTM",  cut); 
+    gMC->SetCut("PPCUTM", cut);
+    gMC->SetCut("TOFMAX", tofmax); 
+  }
+
+  //=======================================================================
+  // External decayer
+  //=======================================================================
+
+  // Set External decayer
+  TVirtualMCDecayer *decayer = new AliDecayerPythia();
+  decayer->SetForceDecay(kAll);
+  decayer->Init();
+  if ( gMC ) gMC->SetExternalDecayer(decayer);
+  
+  //=======================================================================
+  // Event generator
+  //=======================================================================
+
+  // External generator configuration
+  AliGenerator* gener = GeneratorFactory();
+  gener->SetOrigin(0, 0, 0);    // vertex position
+  //gener->SetSigma(0, 0, 5.3);   // Sigma in (X,Y,Z) (cm) on IP position
+  //gener->SetCutVertexZ(1.);     // Truncate at 1 sigma
+  //gener->SetVertexSmear(kPerEvent); 
+  gener->SetTrackingFlag(1);
+  gener->Init();
+    
+  cout << "Running genExtFileConfig.C finished ... " << endl;
+}
+
+Float_t EtaToTheta(Float_t arg){
+  return (180./TMath::Pi())*2.*atan(exp(-arg));
+}
+
+AliGenerator* GeneratorFactory() {
+
+  AliGenExtFile *gener = new AliGenExtFile(-1);
+  AliGenReaderTreeK * reader = new AliGenReaderTreeK();
+
+  reader->SetFileName("galice.root");
+  reader->AddDir("$ALICE_ROOT/MUON/gen");
+  gener->SetReader(reader);
+     
+  return gener; 
+}
+