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A test of HSimulation-HReconstruction chain with low energy CORSIKA showers I.De Mitri, Lorenzo Perrone, M. Settimo Auger Analysis Meeting September 11-14,

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Presentation on theme: "A test of HSimulation-HReconstruction chain with low energy CORSIKA showers I.De Mitri, Lorenzo Perrone, M. Settimo Auger Analysis Meeting September 11-14,"— Presentation transcript:

1 A test of HSimulation-HReconstruction chain with low energy CORSIKA showers I.De Mitri, Lorenzo Perrone, M. Settimo Auger Analysis Meeting September 11-14, 2006 Chicago Università di Lecce and INFN Summary tables of Monte Carlo Truth In collaboration with S. Petrera and F. Salamida

2 - HSimulation-HReconstruction (Offline Framwork) chain - Distribution of reconstructed variables and selection cuts - Impact of cuts on ICRC 2005 hybrid aperture - Trigger info - Availability of simulated data - summary tables of Monte Carlo Truth ** - a ``skeleton'' web site to make a subset of simulated data available for interested group (thanks to B. Dawson for the feedback) Outlook ** this work has been designed and carried out in collaboration with the group of L'Aquila (S.Petrera and F. Salamida)

3 Simulation sample CORSIKA 6.200 QGSJET: hadronic model FLUKA: low energy hadronic interaction model 5 × 783 -> 10 17 eV 5 × 597 -> 10 17.5 eV 5 × 813 -> 10 18 eV proton primaries in a 10 km slice for E= 10 17 eV in a 15 km slice for E= 10 17.5 eV in a 32 km slice for E= 10 18 eV in a 50 km slice for E= 10 18.5 eV dN/d ~ sin cos 0° < < 65 ° the shower library has been generated in Wuppertal University E= 10 17 eVE= 10 17.5 eV E= 10 18.5 eVE= 10 18 eV

4 HSimulation Corsika showers are provided in the EventFileReader.xml as a space separated file list ioauger.root - Further info: no database, FastTankSimulator - Shower width is taken into account (Gora et al GAP- 2005-073) EventFileReaderLG EventGeneratorOG CachedShowerRegeneratorOG FastTankSimulatorOG SdPMTSimulatorOG SdFilterFADCSimulatorMTU SdBaselineSimulatorOG TankGPSSimulatorOG TankTriggerSimulatorOG ShowerLightSimulatorKG LightAtDiaphragmSimulatorKG TelescopeSimulatorKG FdBackgroundSimulatorOG FdElectronicsSimulatorOG FdTriggerSimulatorLAG CentralTriggerSimulatorOG EventBuilderOG UserModule SdSimTruthIT EventFileExporterOG KG-based FD simulation Lecce-L'Aquila modified modules for writing out FD and SD MC Thruth

5 HReconstruction KG-based FD profile reconstruction UserModuleLG EventFileReaderHY EventCheckerOG FdCalibratorOG SdCalibratorOG FdPulseFinderOG FdSDPFinderOG HybridGeometryFinderOG FdApertureLightOG FdProfileReconstructorKG UserModuleLG An overall root tree with MC Truth and reconstructed values is generated and written out for analysis. The SD_Id is not always an increasing number. An exchange/shift occurs randomly when writing out the event. Not a real bug, but an ``uncomfortable'' feature if you rely on an ordered sequence of events (i.e.: for a cross-check with a corresponding MC event list) - >Bugzilla #497

6 Requirements for this study station used inreconstruction is less than 2000m from the Axis (time chisq)/dof is lower than 8 FD/SD time residual it is lower than 200ns position less than 2 km off from SDP at least 2 ``good station'' (obs.) mindepth 200g/cm 2 hybrid_flag=111 genfd_trig log 10 (E/eV)

7 Resolution Energy

8 Resolution Energy 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV

9 Resolution Energy 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV ICRC 2005 FD mono with ``true geometry''

10 Resolution X max

11 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Resolution X max

12 Resolution Core Distance

13 Resolution Core Distance hybrid rec mono rec

14 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Resolution Core Distance

15 Resolution Space Angle

16 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Resolution Space Angle

17 Resolution R P

18 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Resolution R P

19 Resolution 0

20 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Resolution 0

21 Expected Impact of analysis on the Hybrid Aperture ICRC 2005 (S. Petrera et al.) Number of expected events/year E >10 17 eV (a 10% duty cycle is taken into account) events/year dN dEdSdtd ⊗ A(E) ⊗ T 10% dE ∫

22 Exercise....orders of magnitude From the Adelaide site we took the real hybrid event from 1/1/06 – 1/6/06 55608 events - 28364 events hybrid_flag=111 - 91000 events/year on 4 eyes -..... against 1-1.1 10 5 events/year expected...after normalizing

23 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV Trigger Probability vs Core Distance

24 Trigger Probability vs Azimuth Angle 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV

25 Trigger Probability vs Zenith Angle 10 17 eV 10 18 eV 10 17.5 eV 10 18.5 eV

26 Availability of simulated data ioauger.root MC_Truth FD-> FdTriggerSim.log.root SD->tank.log.root XML_files *.xml http://auger.le.infn.it/~lorenzo/www/private/main_ioauger.htm (mozilla/firefox and konqueror proofed )

27 4 eyes event: SD info event: FD info eye: FD info FdTriggerSim.log.root tank.log.root

28 CORSIKA Showers currently available at the Gran Sasso Laboratory 1000 10 17 eV 750 10 17.5 eV 1000 10 18 eV 1000 10 18.5 eV 250 10 19 eV 250 10 20 eV 216 10 21 eV dN/d ~ sin cos 0° < < 89 ° CORSIKA 6.200 QGSJET: hadronic model FLUKA: low energy hadronic model THIN : 10 -6 (optimal) ECUT: 100 Mev for adrons, 250 keV for electromagnetic particles - a mysql database with basic info on each shower and corresponding address has been set up on auger-gs.lngs.infn.it - a synced copy of the databased can be browsed at: http://193.204.78.146/phpMyAdmin/index.php protons...from Wuppertal library

29 http://193.204.78.146/phpMyAdmin/index.php browse query ! Password protected ! * filling scripts adapted from a layout developed in Wuppertal

30 Conclusions - HSimulation-HReconstruction machinery has been performed with low energy Corsika showers. - an estimate of the impact of reconstruction efficiency on ICRC 2005 hybrid aperture has been discussed - A set of HSimulated data are made public on a web page for the interested groups -resolution of reconstructed variables has been investigated. No significant bias have been detected. The obtained energy resolution (at the level of 12%) confirms the estimate given with FD only simulations and true geometry

31 Availability of simulated data http://auger.le.infn.it/~lorenzo/www/private/hybrid.html.current ioauger.root MC_Truth FD-> FdTriggerSim.log.root SD->tank.log.root XML_files *.xml

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