LAr Response to pions: Data vs MC

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Presentation transcript:

LAr Response to pions: Data vs MC S.Paganis (Wisconsin) with Isabelle Winterger,Martin Aleksa LAr+Tile H8 pion CTB Meeting, CERN, 17-May-2005

Analysis (10.0.2 data+MC) Run: 2100482 20GeV pions Fully combined, have shown previously problems in LAr rec. energy Parabola Energy reconstruction 15ADC “cubicADCcut” in LArRawChannelSimpleBuilder.cxx mA2MEV numbers from EMTB EMTB 3x3 clustering No cluster corrections, No Longitudinal weigths No shower cuts yet. MC New “pythonized” version Charge collection corrections Tried to get “correct” beam profile … ADC2MEV+Pedestal File in Digitization step 17-May-2005 LAr response to pions

Setup of LArROD_jobOptions.py for Parabola ################################################################# # # This job option fragment is to create LArRaw Channels # from LAr Digits # Properties for ROD: ##################################### theApp.Dlls += ["LArRawUtils", "LArROD"] #sp-start theApp.TopAlg += [ "LArRawChannelSimpleBuilder" ] LArRawChannelSimpleBuilder = Algorithm( "LArRawChannelSimpleBuilder" ) LArRawChannelSimpleBuilder.maxSamp = 2 #LArRawChannelSimpleBuilder.RecoMode = "CUBIC" LArRawChannelSimpleBuilder.RecoMode = "PARABOLA" #Modified May/2/2005 for tests LArRawChannelSimpleBuilder.CubicAdcCut = 15. LArRawChannelSimpleBuilder.DataLocation = "LArDigitContainer_MC" LArRawChannelSimpleBuilder.LArRawChannelContainerName = "LArRawChannels" LArRawChannelSimpleBuilder.UseRampDB = True LArRawChannelSimpleBuilder.UsePedestalDB = True #sp-end #LArRawChannelSimpleBuilder.UseOFCTool=TRUE # Turn off printing for LArRoI_Map ToolSvc = Service( "ToolSvc" ) ToolSvc.LArRoI_Map.Print=FALSE; # MC symmetry ToolSvc.LArAutoCorrTotalTool.MCSym=TRUE #ToolSvc.LArOFCTool.MCSym=TRUE ToolSvc.LArOFCTool.MCSym=FALSE # SP: addition for parabola for 10.0.2: ToolSvc.LArParabolaPeakrecoTool.correctBias=True ######################################### Consistent ADC2MEV Consistent Noise 10.0.2: MC will not work without this correction 17-May-2005 LAr response to pions

MC production on the GRID started http://atlas.web.cern.ch/Atlas/GROUPS/SOFTWARE/OO/testbeam/simulationCTB/production_1002.html Production includes: Digitization with OFCs and Parabola (with proper jobOptions) Photon run simulation (non trivial) Information: Manuel Gallas, Mireia Dosil + … ? People already started tests: Damir Lelas + more Production Status: Total: 4000 sim jobs (electrons and pions) Done: 1430 sim jobs Digitization will follow: very fast, users can do this even interactively @lxplus 17-May-2005 LAr response to pions

LAr Energy after simple cuts Data MC 17-May-2005 LAr response to pions

Zoom in the “MIP” region (after cuts) Agreement after selecting the correct pedestal file for MC. Small shift of MC to lower scale (MIP looks like a nice std candle for EM scale matching). 17-May-2005 LAr response to pions

Visible Energy per LAr Sampling Normalization away from the noise region 17-May-2005 LAr response to pions

Total visible Energy (LAr) Normalization away from the noise region 17-May-2005 LAr response to pions

Summary Comparison between Data and MC: Agreement in the noise/MIP region MC shows a somewhat deeper shower: more people are now checking. Large MC production has started with both OFCs and Parabola (for initial tests). It took some time to learn how to run MC parabola since it was not the default LAr running mode. 17-May-2005 LAr response to pions