Merge pull request #11083 from wulsin/addGenPlusSimParticles76X

Add customize configuration file to produce/keep a collection of part…

SimG4Core/CustomPhysics/python/GenPlusSimParticles_cfi.py

@@ -0,0 +1,31 @@
+# These customize functions can be used to produce or keep a GenPlusSimParticleProducer collection,
+# which contains particles from the generator (e.g. Pythia) and simulation (i.e., GEANT).  
+#
+# Add to the cmsDriver.py command an argument such as:  
+# --customise SimG4Core/CustomPhysics/GenPlusSimParticles_cfi.customizeProduce,SimG4Core/CustomPhysics/GenPlusSimParticles_cfi.customizeKeep
+
+import FWCore.ParameterSet.Config as cms
+
+def customizeKeep (process):
+  outputTypes = ["RAWSIM", "RECOSIM", "AODSIM", "MINIAODSIM"]
+  for a in outputTypes:
+    b = a + "output"
+    if hasattr (process, b):
+      getattr (process, b).outputCommands.append ("keep *_genParticlePlusGeant_*_*")
+
+  return process
+
+
+def customizeProduce (process):
+    process.genParticlePlusGeant = cms.EDProducer("GenPlusSimParticleProducer",
+                                                  src = cms.InputTag("g4SimHits"),            # use "famosSimHits" for FAMOS
+                                                  setStatus = cms.int32(8),                   # set status = 8 for GEANT GPs 
+                                                  filter = cms.vstring("pt > 10.0"),          # just for testing (optional) 
+                                                  genParticles = cms.InputTag("genParticles") # original genParticle list 
+                                                  )  
+
+    if hasattr (process, "simulation_step") and hasattr(process, "psim"):
+      getattr(process, "simulation_step")._seq = getattr(process,"simulation_step")._seq * process.genParticlePlusGeant   
+
+    return process 
+