Config file for Geant3 simulations used as Reference to Geant4 simulations.
authoresicking <esicking@f7af4fe6-9843-0410-8265-dc069ae4e863>
Thu, 18 Aug 2011 09:29:10 +0000 (09:29 +0000)
committeresicking <esicking@f7af4fe6-9843-0410-8265-dc069ae4e863>
Thu, 18 Aug 2011 09:29:10 +0000 (09:29 +0000)
test/vmctest/production/ConfigG3.C [new file with mode: 0644]

diff --git a/test/vmctest/production/ConfigG3.C b/test/vmctest/production/ConfigG3.C
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+// $Id$
+//
+// Configuration for the Geant3 simulations as Reference to Geant4 simulations
+//
+
+#if !defined(__CINT__) || defined(__MAKECINT__)
+#include <Riostream.h>
+#include <TRandom.h>
+#include <TDatime.h>
+#include <TSystem.h>
+#include <TVirtualMC.h>
+#include <TGeant3TGeo.h>
+#include "STEER/AliRunLoader.h"
+#include "STEER/AliRun.h"
+#include "STEER/AliConfig.h"
+#include "PYTHIA6/AliDecayerPythia.h"
+#include "PYTHIA6/AliGenPythia.h"
+#include "TDPMjet/AliGenDPMjet.h"
+#include "STEER/AliMagFCheb.h"
+#include "STRUCT/AliBODY.h"
+#include "STRUCT/AliMAG.h"
+#include "STRUCT/AliABSOv3.h"
+#include "STRUCT/AliDIPOv3.h"
+#include "STRUCT/AliHALLv3.h"
+#include "STRUCT/AliFRAMEv2.h"
+#include "STRUCT/AliSHILv3.h"
+#include "STRUCT/AliPIPEv3.h"
+#include "ITS/AliITSv11Hybrid.h"
+#include "TPC/AliTPCv2.h"
+#include "TOF/AliTOFv6T0.h"
+#include "HMPID/AliHMPIDv3.h"
+#include "ZDC/AliZDCv3.h"
+#include "TRD/AliTRDv1.h"
+#include "TRD/AliTRDgeometry.h"
+#include "FMD/AliFMDv1.h"
+#include "MUON/AliMUONv1.h"
+#include "PHOS/AliPHOSv1.h"
+#include "PHOS/AliPHOSSimParam.h"
+#include "PMD/AliPMDv1.h"
+#include "T0/AliT0v1.h"
+#include "EMCAL/AliEMCALv2.h"
+#include "ACORDE/AliACORDEv1.h"
+#include "VZERO/AliVZEROv7.h"
+#endif
+
+
+enum PDC06Proc_t 
+  {
+    kPythia6, kPythia6D6T, kPythia6ATLAS, kPythia6ATLAS_Flat, kPythiaPerugia0, kPhojet, kRunMax
+  };
+
+const char * pprRunName[] = {
+  "kPythia6", "kPythia6D6T", "kPythia6ATLAS", "kPythia6ATLAS_Flat", "kPythiaPerugia0", "kPhojet" 
+};
+
+enum Mag_t
+  {
+    kNoField, k5kG, kFieldMax
+  };
+
+const char * pprField[] = {
+  "kNoField", "k5kG"
+};
+
+
+enum PprTrigConf_t
+  {
+    kDefaultPPTrig, kDefaultPbPbTrig
+  };
+
+const char * pprTrigConfName[] = {
+  "p-p","Pb-Pb"
+};
+
+//--- Functions ---
+class AliGenPythia;
+AliGenerator *MbPythia();
+AliGenerator *MbPythiaTuneD6T();
+AliGenerator *MbPhojet();
+void ProcessEnvironmentVars();
+
+// Geterator, field, beam energy
+static PDC06Proc_t   proc     = kPhojet;
+static Mag_t         mag      = k5kG;
+static Float_t       energy   = 10000; // energy in CMS
+static Int_t         runNumber = 0;
+static PprTrigConf_t strig = kDefaultPPTrig; // default pp trigger configuration
+//========================//
+// Set Random Number seed //
+//========================//
+TDatime dt;
+static UInt_t seed    = dt.Get();
+
+// Comment line
+static TString comment;
+
+void Config()
+{
+    
+
+  // Get settings from environment variables
+  ProcessEnvironmentVars();
+
+  gRandom->SetSeed(seed);
+  cerr<<"Seed for random number generation= "<<seed<<endl; 
+
+  // Libraries required by geant321
+#if defined(__CINT__)
+  gSystem->Load("liblhapdf");      // Parton density functions
+  gSystem->Load("libEGPythia6");   // TGenerator interface
+  if (proc == kPythia6 || proc == kPhojet) {
+    gSystem->Load("libpythia6");        // Pythia 6.2
+  } else {
+    gSystem->Load("libpythia6.4.21");   // Pythia 6.4
+  }
+  gSystem->Load("libAliPythia6");  // ALICE specific implementations
+  gSystem->Load("libgeant321");
+#endif
+
+  new TGeant3TGeo("C++ Interface to Geant3");
+
+  //=======================================================================
+  //  Create the output file
+
+   
+  AliRunLoader* rl=0x0;
+
+  cout<<"Config.C: Creating Run Loader ..."<<endl;
+  rl = AliRunLoader::Open("galice.root",
+                         AliConfig::GetDefaultEventFolderName(),
+                         "recreate");
+  if (rl == 0x0)
+    {
+      gAlice->Fatal("Config.C","Can not instatiate the Run Loader");
+      return;
+    }
+  rl->SetCompressionLevel(2);
+  rl->SetNumberOfEventsPerFile(1000);
+  gAlice->SetRunLoader(rl);
+  // gAlice->SetGeometryFromFile("geometry.root");
+  // gAlice->SetGeometryFromCDB();
+  
+  // Set the trigger configuration: proton-proton
+
+  AliSimulation::Instance()->SetTriggerConfig(pprTrigConfName[strig]);
+  cout <<"Trigger configuration is set to  "<<pprTrigConfName[strig]<<endl;
+  //
+  //=======================================================================
+  // ************* STEERING parameters FOR ALICE SIMULATION **************
+  // --- Specify event type to be tracked through the ALICE setup
+  // --- All positions are in cm, angles in degrees, and P and E in GeV
+
+
+  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); 
+
+
+
+
+  //======================//
+  // Set External decayer //
+  //======================//
+  TVirtualMCDecayer* decayer = new AliDecayerPythia();
+  decayer->SetForceDecay(kAll);
+  decayer->Init();
+  gMC->SetExternalDecayer(decayer);
+
+  //=========================//
+  // Generator Configuration //
+  //=========================//
+  AliGenerator* gener = 0x0;
+  
+  if (proc == kPythia6) {
+    gener = MbPythia();
+  } else if (proc == kPythia6D6T) {
+    gener = MbPythiaTuneD6T();
+  } else if (proc == kPythia6ATLAS) {
+    gener = MbPythiaTuneATLAS();
+  } else if (proc == kPythiaPerugia0) {
+    gener = MbPythiaTunePerugia0();
+  } else if (proc == kPythia6ATLAS_Flat) {
+    gener = MbPythiaTuneATLAS_Flat();
+  } else if (proc == kPhojet) {
+    gener = MbPhojet();
+  }
+  
+  
+  //
+  //
+  // Size of the interaction diamond
+  // Longitudinal
+  Float_t sigmaz  = 5.4 / TMath::Sqrt(2.); // [cm]
+  if (energy == 900)
+    //sigmaz  = 10.5 / TMath::Sqrt(2.); // [cm]
+    //sigmaz = 3.7;
+    if (energy == 7000)
+      sigmaz  = 6.3 / TMath::Sqrt(2.); // [cm]
+  
+  //
+  // Transverse
+
+  // beta*
+  Float_t betast                  = 10.0;  // beta* [m]
+  if (runNumber >= 117048) betast =  2.0;
+  if (runNumber >  122375) betast =  3.5;  // starting with fill 1179
+  //   
+  //
+  Float_t eps     = 5.0e-6;            // emittance [m]
+  Float_t gamma   = energy / 2.0 / 0.938272;  // relativistic gamma [1]
+  Float_t sigmaxy = TMath::Sqrt(eps * betast / gamma) / TMath::Sqrt(2.) * 100.;  // [cm]
+  printf("\n \n Diamond size x-y: %10.3e z: %10.3e\n \n", sigmaxy, sigmaz);
+    
+  gener->SetSigma(sigmaxy, sigmaxy, sigmaz);      // Sigma in (X,Y,Z) (cm) on IP position
+  gener->SetVertexSmear(kPerEvent);
+  gener->Init();
+
+  printf("\n \n Comment: %s \n \n", comment.Data());
+
+  rl->CdGAFile();
+  
+  Int_t iABSO  = 1;
+  Int_t iACORDE= 0;
+  Int_t iDIPO  = 1;
+  Int_t iEMCAL = 1;
+  Int_t iFMD   = 1;
+  Int_t iFRAME = 1;
+  Int_t iHALL  = 1;
+  Int_t iITS   = 1;
+  Int_t iMAG   = 1;
+  Int_t iMUON  = 1;
+  Int_t iPHOS  = 1;
+  Int_t iPIPE  = 1;
+  Int_t iPMD   = 1;
+  Int_t iHMPID = 1;
+  Int_t iSHIL  = 1;
+  Int_t iT0    = 1;
+  Int_t iTOF   = 1;
+  Int_t iTPC   = 1;
+  Int_t iTRD   = 1;
+  Int_t iVZERO = 1;
+  Int_t iZDC   = 1;
+  
+
+  //=================== Alice BODY parameters =============================
+  AliBODY *BODY = new AliBODY("BODY", "Alice envelop");
+
+
+  if (iMAG)
+    {
+      //=================== MAG parameters ============================
+      // --- Start with Magnet since detector layouts may be depending ---
+      // --- on the selected Magnet dimensions ---
+      AliMAG *MAG = new AliMAG("MAG", "Magnet");
+    }
+
+
+  if (iABSO)
+    {
+      //=================== ABSO parameters ============================
+      AliABSO *ABSO = new AliABSOv3("ABSO", "Muon Absorber");
+    }
+
+  if (iDIPO)
+    {
+      //=================== DIPO parameters ============================
+
+      AliDIPO *DIPO = new AliDIPOv3("DIPO", "Dipole version 3");
+    }
+
+  if (iHALL)
+    {
+      //=================== HALL parameters ============================
+
+      AliHALL *HALL = new AliHALLv3("HALL", "Alice Hall");
+    }
+
+
+  if (iFRAME)
+    {
+      //=================== FRAME parameters ============================
+
+      AliFRAMEv2 *FRAME = new AliFRAMEv2("FRAME", "Space Frame");
+      FRAME->SetHoles(1);
+    }
+
+  if (iSHIL)
+    {
+      //=================== SHIL parameters ============================
+
+      AliSHIL *SHIL = new AliSHILv3("SHIL", "Shielding Version 3");
+    }
+
+
+  if (iPIPE)
+    {
+      //=================== PIPE parameters ============================
+
+      AliPIPE *PIPE = new AliPIPEv3("PIPE", "Beam Pipe");
+    }
+  if (iITS)
+    {
+      //=================== ITS parameters ============================
+
+      AliITS *ITS  = new AliITSv11Hybrid("ITS","ITS v11Hybrid");
+    }
+
+  if (iTPC)
+    {
+      //============================ TPC parameters =====================
+
+      AliTPC *TPC = new AliTPCv2("TPC", "Default");
+    }
+
+
+  if (iTOF) {
+    //=================== TOF parameters ============================
+
+    AliTOF *TOF = new AliTOFv6T0("TOF", "normal TOF");
+  }
+
+
+  if (iHMPID)
+    {
+      //=================== HMPID parameters ===========================
+
+      AliHMPID *HMPID = new AliHMPIDv3("HMPID", "normal HMPID");
+
+    }
+
+
+  if (iZDC)
+    {
+      //=================== ZDC parameters ============================
+       
+      AliZDC *ZDC = new AliZDCv3("ZDC", "normal ZDC");
+      //Collimators aperture
+      ZDC->SetVCollSideCAperture(0.85);
+      ZDC->SetVCollSideCCentre(0.);
+      ZDC->SetVCollSideAAperture(0.75);
+      ZDC->SetVCollSideACentre(0.);
+      //Detector position
+      ZDC->SetYZNC(1.6);
+      ZDC->SetYZNA(1.6);
+      ZDC->SetYZPC(1.6);
+      ZDC->SetYZPA(1.6);
+    }
+
+  if (iTRD)
+    {
+      //=================== TRD parameters ============================
+
+      AliTRD *TRD = new AliTRDv1("TRD", "TRD slow simulator");
+      AliTRDgeometry *geoTRD = TRD->GetGeometry();
+      // Partial geometry: modules at 0,1,7,8,9,16,17
+      // starting at 3h in positive direction
+      geoTRD->SetSMstatus(2,0);
+      geoTRD->SetSMstatus(3,0);
+      geoTRD->SetSMstatus(4,0);
+      geoTRD->SetSMstatus(5,0);
+      geoTRD->SetSMstatus(6,0);
+      geoTRD->SetSMstatus(11,0);
+      geoTRD->SetSMstatus(12,0);
+      geoTRD->SetSMstatus(13,0);
+      geoTRD->SetSMstatus(14,0);
+      geoTRD->SetSMstatus(15,0);
+      geoTRD->SetSMstatus(16,0);
+    }
+
+  if (iFMD)
+    {
+      //=================== FMD parameters ============================
+
+      AliFMD *FMD = new AliFMDv1("FMD", "normal FMD");
+    }
+
+  if (iMUON)
+    {
+      //=================== MUON parameters ===========================
+      // New MUONv1 version (geometry defined via builders)
+      AliMUON *MUON = new AliMUONv1("MUON", "default");
+      // activate trigger efficiency by cells
+      MUON->SetTriggerEffCells(1);
+    }
+
+  if (iPHOS)
+    {
+      //=================== PHOS parameters ===========================
+
+      AliPHOS *PHOS = new AliPHOSv1("PHOS", "noCPV_Modules123");
+
+    }
+
+
+  if (iPMD)
+    {
+      //=================== PMD parameters ============================
+
+      AliPMD *PMD = new AliPMDv1("PMD", "normal PMD");
+    }
+
+  if (iT0)
+    {
+      //=================== T0 parameters ============================
+      AliT0 *T0 = new AliT0v1("T0", "T0 Detector");
+    }
+
+  if (iEMCAL)
+    {
+      //=================== EMCAL parameters ============================
+
+      AliEMCAL *EMCAL = new AliEMCALv2("EMCAL", "EMCAL_FIRSTYEARV1");
+    }
+
+  if (iACORDE)
+    {
+      //=================== ACORDE parameters ============================
+
+      AliACORDE *ACORDE = new AliACORDEv1("ACORDE", "normal ACORDE");
+    }
+
+  if (iVZERO)
+    {
+      //=================== ACORDE parameters ============================
+
+      AliVZERO *VZERO = new AliVZEROv7("VZERO", "normal VZERO");
+    }
+}
+//
+//           PYTHIA
+//
+
+AliGenerator* MbPythia()
+{
+  comment = comment.Append(" pp: Pythia low-pt");
+  //
+  //    Pythia
+  AliGenPythia* pythia = new AliGenPythia(-1); 
+  pythia->SetMomentumRange(0, 999999.);
+  pythia->SetThetaRange(0., 180.);
+  pythia->SetYRange(-12.,12.);
+  pythia->SetPtRange(0,1000.);
+  pythia->SetProcess(kPyMb);
+  pythia->SetEnergyCMS(energy);
+      
+  return pythia;
+}
+
+AliGenerator* MbPythiaTuneD6T()
+{
+  comment = comment.Append(" pp: Pythia low-pt");
+  //
+  //    Pythia
+  AliGenPythia* pythia = new AliGenPythia(-1); 
+  pythia->SetMomentumRange(0, 999999.);
+  pythia->SetThetaRange(0., 180.);
+  pythia->SetYRange(-12.,12.);
+  pythia->SetPtRange(0,1000.);
+  pythia->SetProcess(kPyMb);
+  pythia->SetEnergyCMS(energy);
+  //    Tune
+  //    109     D6T : Rick Field's CDF Tune D6T (NB: needs CTEQ6L pdfs externally)
+  pythia->SetTune(109); // F I X 
+  pythia->SetStrucFunc(kCTEQ6l);
+  //
+  return pythia;
+}
+
+AliGenerator* MbPythiaTunePerugia0()
+{
+  comment = comment.Append(" pp: Pythia low-pt (Perugia0)");
+  //
+  //    Pythia
+  AliGenPythia* pythia = new AliGenPythia(-1); 
+  pythia->SetMomentumRange(0, 999999.);
+  pythia->SetThetaRange(0., 180.);
+  pythia->SetYRange(-12.,12.);
+  pythia->SetPtRange(0,1000.);
+  pythia->SetProcess(kPyMb);
+  pythia->SetEnergyCMS(energy);
+  //    Tune
+  //    320     Perugia 0
+  pythia->SetTune(320); 
+  pythia->UseNewMultipleInteractionsScenario();
+  pythia->SetCrossingAngle(0,0.000280);
+
+  //
+  return pythia;
+}
+
+
+AliGenerator* MbPythiaTuneATLAS()
+{
+  comment = comment.Append(" pp: Pythia low-pt");
+  //
+  //    Pythia
+  AliGenPythia* pythia = new AliGenPythia(-1); 
+  pythia->SetMomentumRange(0, 999999.);
+  pythia->SetThetaRange(0., 180.);
+  pythia->SetYRange(-12.,12.);
+  pythia->SetPtRange(0,1000.);
+  pythia->SetProcess(kPyMb);
+  pythia->SetEnergyCMS(energy);
+  //    Tune
+  //    C   306 ATLAS-CSC: Arthur Moraes' (new) ATLAS tune (needs CTEQ6L externally)
+  pythia->SetTune(306);
+  pythia->SetStrucFunc(kCTEQ6l);
+  //
+  return pythia;
+}
+
+AliGenerator* MbPythiaTuneATLAS_Flat()
+{
+  AliGenPythia* pythia = MbPythiaTuneATLAS();
+      
+  comment = comment.Append("; flat multiplicity distribution");
+      
+  // set high multiplicity trigger
+  // this weight achieves a flat multiplicity distribution
+  Double_t cont[] =
+    {0, 
+     0.234836, 0.103484, 0.00984802, 0.0199906, 0.0260018, 0.0208481, 0.0101477, 0.00146998, -0.00681513, -0.0114928,
+     -0.0113352, -0.0102012, -0.00895238, -0.00534961, -0.00261648, -0.000819048, 0.00130816, 0.00177978, 0.00373838, 0.00566255,
+     0.00628156, 0.00687458, 0.00668017, 0.00702917, 0.00810848, 0.00876167, 0.00832783, 0.00848518, 0.0107709, 0.0106849,
+     0.00933702, 0.00912525, 0.0106553, 0.0102785, 0.0101756, 0.010962, 0.00957103, 0.00970448, 0.0117133, 0.012271,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113, 0.0113,
+     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
+     0};
+
+  Double_t err[] =
+    {0, 
+     0.00168216, 0.000743548, 0.00103125, 0.00108605, 0.00117101, 0.00124577, 0.00129119, 0.00128341, 0.00121421, 0.00112431,
+     0.00100588, 0.000895078, 0.000790314, 0.000711673, 0.000634547, 0.000589133, 0.000542763, 0.000509552, 0.000487375, 0.000468906, 
+     0.000460196, 0.000455806, 0.00044843, 0.000449317, 0.00045007, 0.000458016, 0.000461167, 0.000474742, 0.00050161, 0.00051637, 
+     0.000542336, 0.000558854, 0.000599169, 0.000611982, 0.000663855, 0.000696322, 0.000722825, 0.000771686, 0.000838023, 0.000908317, 
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003, 0.0003,
+     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+     0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+     0};
+
+  TH1F *weight = new TH1F("newweight","newweight",120,-0.5,119.5);
+
+  weight->SetContent(cont);
+  weight->SetError(err);
+        
+  Int_t limit = weight->GetRandom();
+  pythia->SetTriggerChargedMultiplicity(limit, 1.4);
+      
+  comment = comment.Append(Form("; multiplicity threshold set to %d in |eta| < 1.4", limit));
+
+  return pythia;
+}
+
+AliGenerator* MbPhojet()
+{
+  comment = comment.Append(" pp: Pythia low-pt");
+  //
+  //    DPMJET
+#if defined(__CINT__)
+  gSystem->Load("libdpmjet");      // Parton density functions
+  gSystem->Load("libTDPMjet");      // Parton density functions
+#endif
+  AliGenDPMjet* dpmjet = new AliGenDPMjet(-1); 
+  dpmjet->SetMomentumRange(0, 999999.);
+  dpmjet->SetThetaRange(0., 180.);
+  dpmjet->SetYRange(-12.,12.);
+  dpmjet->SetPtRange(0,1000.);
+  dpmjet->SetProcess(kDpmMb);
+  dpmjet->SetEnergyCMS(energy);
+  dpmjet->SetCrossingAngle(0,0.000280);
+  return dpmjet;
+}
+
+void ProcessEnvironmentVars()
+{
+  // Run type
+  if (gSystem->Getenv("CONFIG_RUN_TYPE")) {
+    for (Int_t iRun = 0; iRun < kRunMax; iRun++) {
+      if (strcmp(gSystem->Getenv("CONFIG_RUN_TYPE"), pprRunName[iRun])==0) {
+       proc = (PDC06Proc_t)iRun;
+       cout<<"Run type set to "<<pprRunName[iRun]<<endl;
+      }
+    }
+  }
+
+  // Field
+  if (gSystem->Getenv("CONFIG_FIELD")) {
+    for (Int_t iField = 0; iField < kFieldMax; iField++) {
+      if (strcmp(gSystem->Getenv("CONFIG_FIELD"), pprField[iField])==0) {
+       mag = (Mag_t)iField;
+       cout<<"Field set to "<<pprField[iField]<<endl;
+      }
+    }
+  }
+
+  // Energy
+  if (gSystem->Getenv("CONFIG_ENERGY")) {
+    energy = atoi(gSystem->Getenv("CONFIG_ENERGY"));
+    cout<<"Energy set to "<<energy<<" GeV"<<endl;
+  }
+
+  // Random Number seed
+  if (gSystem->Getenv("CONFIG_SEED")) {
+    seed = atoi(gSystem->Getenv("CONFIG_SEED"));
+  }
+
+  // Run number
+  if (gSystem->Getenv("DC_RUN")) {
+    runNumber = atoi(gSystem->Getenv("DC_RUN"));
+  }
+}