Enable DPMJET (#1832)

Author: mbroz84

MC/config/PWGUD/external/generator/GeneratorStarlight.C

@@ -1,5 +1,5 @@
-//R__LOAD_LIBRARY(libDPMJET.so)
-//R__LOAD_LIBRARY(libDpmJetLib.so)
+R__LOAD_LIBRARY(libDPMJET.so)
+R__LOAD_LIBRARY(libDpmJetLib.so)
 R__LOAD_LIBRARY(libStarlib.so)
 R__ADD_INCLUDE_PATH($STARlight_ROOT/include)
 
@@ -104,7 +104,7 @@ class GeneratorStarlight_class : public Generator
     {"kIncohPsi2sToElPi",    4,  444011,   20, -1.0, -1.0,  100443, 1 }, //
     {"kIncohUpsilonToMu",    4,  553013,   20, -1.0, -1.0,  553, 0 }, //
     {"kIncohUpsilonToEl",    4,  553011,   20, -1.0, -1.0,  553, 0 }, //
-//    {"kDpmjetSingle",        5,  113,   20, -1.0, -1.0,  -1, 0 }, //
+    {"kDpmjetSingle",        5,  113,   20, -1.0, -1.0,  -1, 0 }, //
     {"kTauLowToEl3Pi",       1,      15,  990,  3.5, 20.0,  -1, 1 }, // from 0.4 to 15 GeV
     {"kTauLowToPo3Pi",       1,      15,  990,  3.5, 20.0,  -1, 1 }, // from 0.4 to 15 GeV
     {"kTauLowToElMu",        1,      15,  990,  3.5, 20.0,  -1, 1 }, // from 0.4 to 15 GeV
@@ -312,8 +312,28 @@ class GeneratorStarlight_class : public Generator
 
 
 FairGenerator*
-  GeneratorStarlight(std::string configuration = "empty",float energyCM = 5020, int beam1Z = 82, int beam1A = 208, int beam2Z = 82, int beam2A = 208, std::string extrapars = "")
+  GeneratorStarlight(std::string configuration = "empty",float energyCM = 5020, int beam1Z = 82, int beam1A = 208, int beam2Z = 82, int beam2A = 208, std::string extrapars = "",std::string dpmjetconf = "")
 {
+  if(dpmjetconf.size() != 0){
+    //Copy necesary files to the working directory
+    TString pathDPMJET = gSystem->ExpandPathName("$DPMJET_ROOT/dpmdata");
+    system(TString::Format("cp -r %s .",pathDPMJET.Data()));
+    system(TString::Format("cp %s ./my.input",dpmjetconf.c_str()));
+
+    //Reset four seeds of the DPMJET random generator in the config
+    std::random_device rd;
+    std::mt19937 gen(rd());
+    std::uniform_int_distribution<> dist(1, 168);
+
+    std::string command = "awk -i inplace -v nums=\"";
+    for (int i = 0; i < 4; ++i)command += TString::Format("%d.0 ", dist(gen));
+    command +=" \" \' ";
+    command += "BEGIN {split(nums, newvals);}";
+    command += "{if ($1 == \"RNDMINIT\") {printf \"%-16s%-9s%-9s%-9s%-9s\\n\", $1, newvals[1], newvals[2], newvals[3], newvals[4];}";
+    command += " else {print $0;}}\' \"my.input\" ";
+    system(command.c_str());
+  }
+
   auto gen = new o2::eventgen::GeneratorStarlight_class();
   gen->selectConfiguration(configuration);
   gen->setCollisionSystem(energyCM, beam1Z, beam1A, beam2Z, beam2A);

MC/config/PWGUD/ini/makeStarlightConfig.py

@@ -27,6 +27,9 @@
 parser.add_argument('--extraPars', default='',
                     help='Extra parameters for SL config')
 
+parser.add_argument('--dpmjetConf', default='',
+                    help='DPMJET config file')
+
 
 args = parser.parse_args()
 
@@ -76,25 +79,26 @@
     fout.write('funcName = GeneratorStarlightToEvtGen("%s", %f, %d, %d, %d, %d, "%s")  \n' % (args.process,args.eCM ,pZ,pA,tZ,tA,args.extraPars))
 else:
     fout.write('fileName = ${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGUD/external/generator/GeneratorStarlight.C \n')
-    fout.write('funcName = GeneratorStarlight("%s", %f, %d, %d, %d, %d, "%s")  \n' % (args.process,args.eCM ,pZ,pA,tZ,tA,args.extraPars))
+    fout.write('funcName = GeneratorStarlight("%s", %f, %d, %d, %d, %d, "%s", "%s")  \n' % (args.process,args.eCM ,pZ,pA,tZ,tA,args.extraPars,args.dpmjetConf))
 
 ###Trigger
-fout.write('[TriggerExternal] \n')
-fout.write('fileName = ${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGUD/trigger/selectParticlesInAcceptance.C \n')
-if 'kTwoGamma' in args.process or 'kTau' in args.process:
-    if args.rapidity == 'cent_eta':
-        fout.write('funcName = selectDirectPartInAcc(-0.9,0.9) \n')
-    if args.rapidity == 'muon_eta':
-        fout.write('funcName = selectDirectPartInAcc(-4.0,-2.5) \n')
-else:
-    if args.rapidity == 'cent_rap':
-        fout.write('funcName = selectMotherPartInAcc(-0.9,0.9) \n')
-    if args.rapidity == 'muon_rap':
-        fout.write('funcName = selectMotherPartInAcc(-4.0,-2.5) \n')
-    if args.rapidity == 'cent_eta':
-        fout.write('funcName = selectDaughterPartInAcc(-0.9,0.9) \n')
-    if args.rapidity == 'muon_eta':
-        fout.write('funcName = selectDaughterPartInAcc(-4.0,-2.5) \n')
+if not 'kDpmjet' in args.process:
+    fout.write('[TriggerExternal] \n')
+    fout.write('fileName = ${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGUD/trigger/selectParticlesInAcceptance.C \n')
+    if 'kTwoGamma' in args.process or 'kTau' in args.process:
+        if args.rapidity == 'cent_eta':
+            fout.write('funcName = selectDirectPartInAcc(-0.9,0.9) \n')
+        if args.rapidity == 'muon_eta':
+            fout.write('funcName = selectDirectPartInAcc(-4.0,-2.5) \n')
+    else:
+        if args.rapidity == 'cent_rap':
+            fout.write('funcName = selectMotherPartInAcc(-0.9,0.9) \n')
+        if args.rapidity == 'muon_rap':
+            fout.write('funcName = selectMotherPartInAcc(-4.0,-2.5) \n')
+        if args.rapidity == 'cent_eta':
+            fout.write('funcName = selectDaughterPartInAcc(-0.9,0.9) \n')
+        if args.rapidity == 'muon_eta':
+            fout.write('funcName = selectDaughterPartInAcc(-4.0,-2.5) \n')
 
 ### close outout file
 fout.close()