1. 1 Software tools for GLD Studies Akiya Miyamoto KEK 25 May, 2005 at IHEP Based on acfa-sim-j activity

2. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 2 Contents Jupiter Satellites SimTools Summary

3. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 3 Objectives of Software tools Physics studies  Event generators  Fast detector Monte Carlo Detector studies  Geant4 simulation  Reconstruction: clustering, track fitter, vertexing, Beam test studies  Data storage and analysis  Simulation Based on a common framework JSF and ROOT

4. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 4 Near term goals Goals of studies in 2004-2005 are detector optimization based on Full detector simulation.  Implement “GLD” geometry in Jupiter  Study PFA performances by an ultimate condition  Implement “tower” calorimeter  Develop analysis tools  Study physics performance vs. detector choice. A study by detector simulation is also crucial for the design of the IR design of ILC.

5. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 5 Jupiter/Satellites Concepts 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: the 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

6. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 6 Jupiter feature - 1 Based on Geant4 7.0p1 Modular organization of source codes for easy installation of sub-detectors Geometry  parameters ( size, material, etc ) can be modified by input ASCII file.  Only simple geometries are implemented ( OK for the detector optimization ) Input:  StdHep file(ASCII), HepEvt, CAIN, or any generators implemented in JSF.  Binary StdHep file will be supported soon.

7. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 7 Jupiter feature - 2 Run mode:  A standalone Geant4 application  JSF application to output a ROOT file. Output:  Exact Hits of each detectors (Smearing in Satellites)  Pre- and Post- Hits at before/after Calorimeter  Used to record true track information which enter CAL.  Format: ROOT (standard), ASCII(debug), LCIO Physics List  LCPhysicsList  QGSP, LHEP, …  Calorimeter resolution : Depends on physics list, and not as good as we expected for single particle

8. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 8 Geometry in Jupiter Solenoid Hadron Calorimeter Muon/Iron Elemag. CalorimeterIT VTX Forward Cal. QC1 TPC

9. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 9 Detector Parameters GLD_V1: as an initial set of detector parameters  Beam Pipe : 1.8cm , Be 500  m t  VTX : 4 layers from R=2.4cm to 6.0cm, Si 330  m t, |cos  |<0.9  r  =  z =4  m, Cylindrical shape, not FPCCD geometry yet  IT : 4 layers from R=9cm to 30cm, Si 600  m t, |cos  |<0.9  r  =  z =10  m, Cylindrical shape  TPC : R=40cm to 206cm, |Z|<235cm, # of sampling 200  r  =150  m,  z =500  m, Gas P10  Solenoid : 3T  Muon : Barrel : 4 mud layers, total 270cm t Fe Endcap : 5 mud layers, total 260cm t Fe Signals are smeared in Satellites All parameters needs to be optimized

10. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 10 Calorimeter Geometry 40 cm 270 cm 210 cm Full One Tower EM + HD 27 X 0 6.1λ Default sensor size:  EM: 4cmx4cmx1mm, 38 layers  HD:12cmx12cmx2mm, 130 layers Replica  Phi direction : Tower and mini-tower Sandwich structure of X/Y scinti structure can be defined.

11. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 11 Metis package Metis is a collection of reconstruction tools for Jupiter data. Current aim is to prepare a minimum set of Metis modules for studies of Particle Flow Algorithm. Novice users will be able to do physics analysis using information of PFO classes. As a first step, a cheated track finder and a cluster maker, etc are in preparation in order to know ultimate performance. Each module is independent, thus shall be easy to implement different reconstruction algorithm according to interests  Development of a real clustering code begins recently

12. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 12 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 make cluster from CAL hits make Particle Flow Objects jet clustering Jupiter result Physics study Metis Analysis Flow

13. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 13 Momentum resolution Exact hit points created by single  were fitted by Kalman filter package  pt /p t 2 (GeV -1 ) By A.Yamaguchi(Tsukuba)

14. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 14 By A.L.C.Sanchez (Niigata U.) Linearity is good, but to get energy resolution similar to beam test results, Randge cut of O(1)  m is required. It is very small and we don’t know why we need O(1)  m. EM Cal Performance

15. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 15 Cheated Particle Flow Analysis Key point of PFA is use Cal. signals only for neutral particles  Remove CAL signal if connected to a track Use Simulation information to connect track and cal. signals  Cheated PFA What affects jet energy resolution  Signal sampling fluctuation in Cal.  Tracker resolution  Treatment of V0, decays,and interactions before Cal.  … more  Understand factors which affect resolution A sample detector signal

16. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 16 Cheated PFO analysis ZH event at Ecm=500 GeV By K.Fujii(KEK), S.Yamamoto(GUAS), A.Yamaguchi(Tsukuba) - Exact hit points of TPC and CAL are displayed. -Hits belong to the same PFO are shown with the same color -A framework of event display in JSF is used.

17. X3D ROOT’s X3d view of the same event

18. X3D-Jet Same event, after a forced 4-jet clustering on PFObjects

19. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 19 Jet energy resolution e + e -  Z  q qbar at sqrt(E)=91.1GeV By Sumie Yamamoto

20. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 20  E for Perfect CAL./Tracker Jet energy resolution when resolution of CAL and tracker are perfect. GeV/c 2 Contribution of each detector Total 2.7 GeV HD Cal 2.0 EM Cal 1.2 Tracker 0.4 Others 1.4 (under investigation) By Sumie Yamamoto

21. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 21 How to get/use our tools Our software tools are maintained in CVS server,jlccvs.kek.jp. At http://jlccvs.kek.jp/,  Description about how to download latest version.  Web interface to the CVS repository,  http://jlccvs.kek.jp/cgi-bin/cvsweb.cgi/  Snap shot of source codes.  http://jlccvs.kek.jp/snapshots/ Recently, we prepared SimTools web page for easy use of our packages.

22. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 22 SimTools SimTools is a collection of pre-compiled libraries of jsf, lclib, Leda, Jupiter, Satellites, Uranus and lcbase.  Build conditions  Compiled on Redhat 9.0, gcc 2.2.2  Using Root 4.03.04  Ready to use if your system meets these conditions.  Includes several examples in using JSF/QuickSim, Jupiter, and Satellites.  Source codes are also included Web page  http://acfahep.kek.jp/subg/sim/simtools/index.html

23. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 23 Summary Full detector simulator, Jupiter, has been developed based on Geant4. Cheated PFA has been implemented in Satellites and a study of jet mass resolution in progress. Other studies in progress includes  Development of realistic PFA  Study of TPC performance  Backgrounds studies There are many untouched topics. Contributions are highly welcomed.

24. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 24 Backup slides

25. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 25 SUSY study in jet mode LSP+WWLSP+ZZ  (0.5TeV, fb)20.11.8 No. of jet events (0.5ab -1 ) 4641441 M 1 qq(GeV) M 2 qq(GeV) M 1 qq(GeV) M 2 qq(GeV) Hard to find Neurtalino SUSY parameter: m 0 =500GeV,  =400GeV M 2 =250GeV, tan  =3

26. A.Miyamoto, Software tools for GLD studies (25, May, 2005) 26 PFA Principle  jet 2 =  ch 2 +   2 +  nh 2 +  confusion 2 +  threashold 2  Charged ~ 60% by tracker  Gammas ~ 30% by EM cal  Neutral Hadron ~10% by HD cal. Separation of charged particle and  /neutral hadron is important Separation : BL 2 /R m ( if consider curvature by B)  L=R in (Barrel) or Z in (End Cap),  Rm=Effective Moliere length B=0