Gabriele Cosmo
160 lines
5.3 KiB
Python
160 lines
5.3 KiB
Python
# This file is used by G03RunApplication.py
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#
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# A very prototype like class which allows to do a given number
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# of runs runs (nruns) of a given number of events (nevents)
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# by calling nruns times BeamOn(nevents).
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# The class fills a list after every call to BeamOn(nevents)
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# with the number of tracks entered in a certain cell
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# in the last run.
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import math
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import string
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# import the G4 shadow classes. B03App in tern loads B03Appc.so
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# containing the "hooks" to the c++ code
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from B03App import *
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class B03Application:
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def __init__(self, nevents):
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# this function prepares Geant4 for running by calling,
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# creates a parallel geometry, sets importance values
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# creates an parallel importance score sampler,
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# creates scores to access data,
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# and creates an empty histogram
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#(so by far to much for one function, but this is a prototype)
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# nevents is the number of events per run
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self.nevents = nevents
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# an array to store the messurments
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self.messurements = []
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def initializeApplication(self):
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if "base" in dir(self):
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print "already initialized"
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return
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# get B03AppBase singleton, in tern creating the mass detector and
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# the physics list
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self.base = B03AppBase_GetB03AppBase ()
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def setupParallelGeometry(self):
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if "pgeom" in dir(self):
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print "geometry already created"
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return
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if not "base" in dir(self):
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print "call \"initializeApplication\" first"
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return
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# create the parallel geometry and get it's world volume
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self.pgeom = B03ImportanceDetectorConstruction()
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self.p_world = self.pgeom.GetWorldVolume()
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# create a list of G4GeometryCells related to the
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# physical volumes in the parallel detector
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# needed to assign importance values to the cells
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# and to create scorers for the cells
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self.gCell_list =[]
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for i in range(1,19):
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self.gCell_list.append(self.pgeom.GetGeometryCell(i))
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self.CellRest = self.pgeom.GetGeometryCell(19)
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def createIstoreAndScorer(self):
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if "istore" in dir(self):
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print "Istore and Scorer already created"
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return
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if not "pgeom" in dir(self):
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print "call \"setupParallelGeometry\" first"
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return
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# create an importance store
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self.istore = G4IStore(self.p_world)
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# create a store for G4CellScorers
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self.cs_store = G4CellScorerStore()
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# fill the istore with importance values for the
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# G4GeometryCells
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# and create G4CellScorers for the G4GeometryCells
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self.CellScorerList = []
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exp = 0
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for gCell in self.gCell_list:
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exp += 1
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importance = math.pow(2,exp)
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if exp < 18:
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self.istore.AddImportanceGeometryCell(importance,gCell)
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self.CellScorerList.append(self.cs_store.AddCellScorer(gCell))
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# set importance of world volume
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self.istore. \
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AddImportanceGeometryCell(1, G4GeometryCell(self.p_world,-1))
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imp_cell_17 = self.istore.GetImportance(self.pgeom.GetGeometryCell(17))
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self.istore. \
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AddImportanceGeometryCell(imp_cell_17,
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self.pgeom.GetGeometryCell(18))
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self.istore. \
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AddImportanceGeometryCell(imp_cell_17, self.CellRest)
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# create G4CellStoreScorer derived from G4VPScorer
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self.scorer = G4CellStoreScorer(self.cs_store)
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def setupSampler(self):
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if "sampler" in dir(self):
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print "Sampler already created"
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return
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if not "istore" in dir(self):
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print "call \"createIstoreAndScorer\" first"
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return
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# create a sampler for neutrons
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self.sampler = G4ParallelGeometrySampler(self.p_world,
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"neutron")
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self.sampler.PrepareImportanceSampling(self.istore)
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self.sampler.PrepareScoring(self.scorer)
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self.sampler.Configure()
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def run(self, nruns):
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if not "sampler" in dir(self):
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print "call \"setupSampler\" first"
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return
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# this function class BeamOn(self.nevents) nruns times
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# and fills a histogram with the number of tracks
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# entered the 4th cell in the self.CellScorerList ("p_D2")
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# at the end it prints a table of the scores
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# get run manager and run 100 events
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r = self.base.GetRunManager()
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tinold=self.CellScorerList[17].GetCellScoreValues().fSumTracksEntering
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# run nruns runs with self.nevents events
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# each and fill a histogram after each run
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for i in range(nruns):
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r.BeamOn(self.nevents)
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tin = self.CellScorerList[17].GetCellScoreValues().fSumTracksEntering
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v = tin-tinold
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self.messurements.append(v)
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tinold = tin
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print "run number:", i+1, "messured: ", v
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# create a G4ScoreTable
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st = G4ScoreTable(self.istore)
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# get the result as table in a string
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s = st.Write(self.cs_store.GetMapGeometryCellCellScorer())
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print s
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