2/4/20079th ACFA ILC Detector Simulation Works 9 th ACFA IHEP Feb. 4 th -7 th, 2007 Tamaki Yoshioka ICEPP, Univ. of Tokyo on behalf of the GLD colleagues Contents : 1. Introduction 2. Software Tools 3. Performance 4. Software Tools for Other Regions 5. Summary

Objective of Software Tools ILC Physics Performance Simulation Analysis Optimization Beam tests Requirement VTX R&D TPC R&D Calorimeter R&D Detector Model

DescriptionDetectorLanguageIO-FormatRegion SimdetFast Monte CarloTeslaTDRFortranStdhep/LCIOEU SGVFast Monte CarloflexibleC++None(LCIO)EU LelapsFast Monte CarloSiD, flexibleC++SIO, LCIOUS QuickSimFast Monte CarloGLDFortranROOTAsia Brahms-SimFull sim. - Geant3TeslaTDRC++ASCII, LCIOEU MokkaFull sim. – Geant4TeslaTDR, LDCC++LCIOEU SLICFull sim. – Geant4SiDC++LCIOUS ILC-ROOTFull sim. – Geant44thC++ROOTUS+EU JupiterFull sim. – Geant4GLDC++ROOT, LCIOAsia Brahms-RecoReconstruction frameworkTeslaTDRFortranLCIOEU MarlinReconstruction Analysis frameworkFlexible,LDCC++LCIOEU Org-lcsimReconstruction packagesSiD(flexible)JavaLCIOUS SatellitesReconstruction packagesGLDC++ROOTAsia LCCDConditiions data toolkitLDC, SiD,..C++MySQL, LCIOEU GEARGeometry DescriptionFlexibleC++XMLEU LCIOPersistency/DatamodelAllC++,Java, Fortran -EU,US,As ia JAS3/WIREDAnalysis tool/Event displayLDC, SiD …Java XML,LCIO,stdhep, heprep, US, EU JSFAnalysis frameworkAllC++ROOT/LCIOAsia Software Tools in the World

2/4/20079th ACFA Our Software Tools Event Reconstruction Digitizer Finder Fitter Detector Simulator QuickSim FullSim Event Generator Pythia CAIN StdHep Beamtest Analysis Physics Analysis Jet finder

2/4/20079th ACFA Our Software Tools ROOT objects : Event Tree & Configuration Beamtest Analysis Event Reconstruction Digitizer Finder Fitter Detector Simulator QuickSim FullSim Event Generator Pythia CAIN StdHep Physics Analysis Jet finder Based on a common framework : JSF and ROOT

2/4/20079th ACFA JSF Framework : JSF = ROOT based application - All functions are based on C++, compiled through CINT. - Provides common framework for event generations, detector simulations, analysis and beam test data analysis. - Unified framework for interactive and batch jobs - Data are stored as root objects; root trees, ntuple, etc..

2/4/20079th ACFA

2/4/20079th ACFA QuickSim Analysis Example Incl. beamstrahlung 350GeV, nominal  (Mh)~109MeV Incl. beamstrahlung 350GeV, high-lum  (Mh)~164MeV Incl. beamstrahlung 250GeV, nominal  (Mh)~27MeV  E/E(beam)~0.1% Differential Luminosity

2/4/20079th ACFA JUPITER JLC Unified Particle Interaction and Tracking EmulatoR IO Input/Output module set URANUS LEDA Monte-Calro Exact hits To Intermediate Simulated output Unified Reconstruction and ANalysis Utility Set Library Extension for Data Analysis METIS Satellites Geant4 based Simulator JSF/ROOT based Framework JSF: analysis flow controller based on ROOT. The release includes event generators, Quick Simulator, and simple event display. MC truth generator Event Reconstruction Tools for simulation Tools For real data Jupiter/Satellites Concepts

2/4/20079th ACFA Jupiter

2/4/20079th ACFA Jupiter Feature Based on Geant4.8.0p1 (As of February 07) Modular structure → easy installation of sub-directories. Geometries - GLD-baseline geometry has been implemented. - Parameters (size, material etc.) can be modified by input ASCII file. → Parameters are saved as root object for use in Satellites later.

2/4/20079th ACFA GLD Geometry in Jupiter As of February 07

2/4/20079th ACFA GLD Geometry in Jupiter TPC VTX, IT FCALBCAL

2/4/20079th ACFA GLD Geometry in Jupiter Solenoid Hadron Calorimeter (HCAL) Electromagnetic Calorimeter (ECAL) TPC VTX, IT FCALBCAL Muon Detector 1 module

2/4/20079th ACFA Jupiter Feature (Cont ’ d) Input : - StdHep file (ASCII), HepEvt, CAIN, or any generators implemented in JSF. - Binary StdHep file interface was implemented. Output : - Exact Hits of each detector components (Smearing in Satellites). - Break points in tracking volume. - Pre- and Post- Hits at before/after Calorimeter. → Used to record true track information which enter CAL/BCAL/FCAL. - Interface to LCIO format is prepared in JSF framework. Run Mode : - A standalone Geant4 application. - JSF application to output a ROOT file. Break point Post-hits CAL TPC e+e+ e-e- IP Pre-hits

2/4/20079th ACFA Satellites

2/4/20079th ACFA …. cdc vtx Satellites bin src lib include test iojsfj4 mctruth kern examples Run Jupiter in JSF to create a ROOT file cal S4xxxExactHit class = J4xxxHit class metis Leda j42lcio Output LCIO data examples macro Satellites Directory Structure jupiter lcio Read LCIO data

2/4/20079th ACFA Metis Package Metis is a collection of reconstruction tools for Jupiter data. Each module is relatively independent, thus easy to implement different reconstruction algorithm. Packages under development include - Hit digitizer : Mostly simple smearing of exact hits - Kalman filer : for TPC, VTX and IT. - Both cheat and realistic Particle Flow Algorithm - Jet clustering Novice users will be able to do physics analysis by using information of PFO classes.

2/4/20079th ACFA Analysis Flow cal metis tpchitmaker trackmaker hybthybtmaker hitmaker (JSF’s) Modules for MC data analysis make smeared TPC hits from exact hit make tracks from TPC make hybrid tracks ( TPC+IT+VTX) make smeared/merged CAL hits from exact hit clustermaker make cluster from CAL hits pfo pfomaker make Particle Flow Objects jet jetmaker make jet Objects Metis Directory Structure Cheated or Realistic PFA

2/4/20079th ACFA Performance

2/4/20079th ACFA Typical Event Display - ZH → h : Two jets from Higgs can be seen. Side View End View

2/4/20079th ACFA - Exact hit points created by single  are fitted by Kalman filter package  pt /p t 2 (GeV -1 ) Momentum Resolution ~4 ×10 -5 for 100GeV Muon

2/4/20079th ACFA Calorimeter Performance cosTheta<0.8 cut - Energy resolution obtained by injecting single gamma/KL. ECALHCAL Performances have to be verified/confirmed by beam tests in coming years.

2/4/20079th ACFA Particle Flow Algorithm e+e+ e-e- Critical part to complete detector design. - Large R & medium granularity vs. small R & fine granularity - Large R & medium B vs. small R & high B - … Algorithm developed in GLD: consists of several steps - Gamma Finding - Cluster-Track Matching - Neutral Hadron Finding Red : pion Yellow :gamma Blue : neutron

2/4/20079th ACFA - Almost no angular dependence : ~30%/ √ E for |cos  |< cf. 60 %/ √ E w/o the PFA (sum up the calorimeter energy) All angle - Z → 91.2GeV, tile calorimeter, 1cm x 1cm tile size Jet Energy Resolution (Z-pole)

2/4/20079th ACFA - Almost no angular dependence : ~30%/ √ E for |cos  |< cf. 60 %/ √ E w/o the PFA (sum up the calorimeter energy) All angle - Z → 91.2GeV, tile calorimeter, 1cm x 1cm tile size Jet Energy Resolution (Z-pole) Next Step : - Detector Configuration Optimization. - Other energy points and physics channels.

2/4/20079th ACFA Detector Optimization Ex) PFA performance for Z->qq events w/ different B-field. Detector optimization using PFA - B-field - Calorimeter granularity (transverse/longitudinal) - Calorimeter radius - Cal. absorber material - TPC endplate thickness - etc … Details will be reported at simulation/reconstruction session on Feb. 5.

2/4/20079th ACFA Full Simulation Physics Study Full simulation physics study with the PFA. - Signal : Zh → h - Background : ZZ only - 55fb -1 Benchmark processes recommended by the Benchmark Panel. Preliminary

2/4/20079th ACFA Software Tools for Other Regions

Frank Gaede European ILC software framework Simulation Geant4 MOKKA CGA C++ Drivers MySQL Reconstruction +Analysis MARLIN MarlinUtil Processors LCCD CondDBMyS QL LCIO GEAR CLHEP, gsl,.. Mokka ● geant4 full simulation ● MySQL geometry ● LCIO output ● GEAR geometry output LCIO ● event data model ● persistency ● intl. standard for ILC data Gear ● geometry API Marlin ● based on LCIO ● application framework ● C++ LCCD ● conditions data flexible and lightweight framework used for ● LDC concept studies ● detector optimization ● ILC R&D testbeams (EUDET) ● calice, TPC, PixelTelscope,...

Frank Gaede ILC detector simulation w. Mokka Mokka simulations for ILC: ● full LDC detector ● scalable geometry drivers ● -> detector optimization ● 500 k evts fully simulated ● special geometry models ● MDI/background studies ● testbeam simulations ● calice DESY/CERN setups ● pixel telescope (EUDET) ● also: SID model

Frank Gaede ILC reconstruction/PFA w. Marlin A.Raspereza Marlin serves as a modular plattform for the distributed development of PFA code: ● MarlinReco (DESY/MPI) ● modular suite of reco algorithms ● tracking, clustering, cheater,... ● vtx tracking ● PandoraPFA (M.Thomson) ● PFA processor ● ZVTOP (LCFI) ● vertexing toolkit ●...

2/4/2007 9th ACFA 33 ALCPG Simulation Mission Statement Provide full simulation capabilities for Linear Collider physics program:  Physics simulations  Detector designs  Reconstruction and analysis Need flexibility for:  New detector geometries/technologies  Different reconstruction algorithms

2/4/2007 9th ACFA 34 Detector Simulations FastMC for studies using 4-vector smearing  ReconstructedParticles. lelaps for fast tracking and parameterized calorimeter showers  hits in detectors, so can study track finding and cal clustering. slic is full-featured, GEANT4-based detector simulation  hits in detectors. All detector simulation and event reconstruction packages use same geometry source.  ASCII file provides runtime detector description.  Can change detector without writing any code.

2/4/2007 9th ACFA 35 Event Reconstruction (org.lcsim) Java based reconstruction and analysis package  Runs standalone or inside Java Analysis Studio (JAS)  Fully LCIO compliant,  works well with other frameworks.  Full Event Reconstruction event overlay at hit level (arbitrary # & type of events) hit digitization track finding and fitting calorimeter clustering Individual Particle reconstruction (cluster-track association)  Analysis Tools (including WIRED event display)  Physics Tools (Vertex Finding, Jet Finding, Flavor Tagging)

2/4/2007 9th ACFA 36 Additional Information lcsim.org - ILC Forum - Wiki - org.lcsim - Software Index - Detectors - LCIO - SLIC - LCDD - JAS3 - AIDA - WIRED -

2/4/20079th ACFA Summary Main objectives to software tools within couple of years are detector optimization and physics performance study. GLD-baseline geometry has been implemented to full simulator (Jupiter) and analysis tools including PFA have been developed. → Now detector optimization and physics performance study just have been started based on the full simulation. Stay tuned. There are still a lot of things to do. Contributions are highly welcomed.

2/4/20079th ACFA Our software tools are maintained in CVS server, –Description about how to download the latest version. Link to various tools at GLD Software at Simulation/Reconstruction Parallel Session –Feb. 5, Morning, room B326. How to Get Our Tools