1. 1 Jupiter and Satellites Akiya Miyamoto KEK June 2005

2. 2 Target of Jupiter/Satellites/Uranus Jupiter and Satellites are tools for detector optimization based on Geant4 Full detector simulation.  Implement an ideal “GLD” geometry in Jupiter ( other geometry is also possible )  Study PFA performances by an ultimate condition  Implement “tower” calorimeter  Develop analysis tools  Study physics performance vs. detector choice.  Not for simulation studies for beam test studies A study by detector simulation is also crucial for the design of the IR design of ILC.

3. 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 Extention 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

4. 4 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 interface was implemented. Need some more tests.

5. 5 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

6. 6 Geometry in Jupiter Solenoid Hadron Calorimeter Muon/Iron Elemag. CalorimeterIT VTX Forward Cal. QC1 TPC

7. 7 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

8. 8 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.

9. 9 Jupiter in general:  Jupiter.pdf : “JUPITER”, the latest manual (June 6, 2004, in Japanese ), by K.Hoshina  Hoshina-appi2002.pdf : “Simulator status of Jupiter and Satelliets”, The proceedings of APPI2002, by K.Hoshina Stereo Geometry for CDC  J4TwistedTubs.pdf: K.H, K.F and O.N., CPC 153 (2003)373-391,  Hoshina-appi2003.pdf: “Status of Jupiter and Satellites”, the proceedings of APPI2003 by K.Hoshina Thesis  Hoshina-D.pdf: Doctor Thesis by K.Hoshina (in Japanese)  Nakashima-M.pdf: Master Theses by Y.Nakashima (in Japanese) About Kalman Filter Track Fitting package Documents are available at http://www-jlc.kek.jp/subg/offl/lib/docs/Jupiterhttp://www-jlc.kek.jp/subg/offl/lib/docs/Jupiter Documents

10. 10 Meetings & ML Since last July,  We had two Jupiter developers workshop  Each about ~ 1 week  Participants : A.Miyamoto, K.Fujii (KEK), and students from Kobe, Niigata, Tsukuba, GUAS  Regular TV meetings in Tuesday afternoon  Create a mailing list, acfa-sim-j@jlcux1.kek.jp  To discuss technical details ( in Japanese )

11. 11 Sources The host system for developments is jlclogin.kek.jp  CVS Master repository : jlclogin:/proj/soft/CVSMASTER Note: CVS repository of Jupiter and Satellites are updated very frequently  A set of libs/execs : jlclogin:/proj/soft/Release/x.xx ( x.xx=1.00 as of June 1, new set will be created soon ) For a remote user,  Daily snap shots of CVS repository: http://jlccvs.kek.jp/snapshots/  The Web interface to CVS, http://jlccvs.kek.jp/  Remote access to the CVS repository  CVS access is out of order, due to a security problem. We will restart after the system update, if there is a request.  Or use CVSup ( see http://jlccvs.kek.jp/cvsup/ )

12. 12 Jupiter bindocincludeconfiglibmacrosscriptssourcestmp bdcalcd c tpc ct it vtx ir srcinclude kernlcexpsolmain Jupiter.cc Sub-Detector files Linux-g++ Jupiter Readme common.gmk Sample G4 scripts Detector components to use are switched by CPP flags in Jupiter.cc or parameters in JSFJ4 Jupiter Directory Structure

13. 13 You will need,  ROOT, JSF, Geant4, CLHEP, …(?) Get JUPITER source from CVS Set environment parameters, such as JUPITERROOT  See jlclogin:/proj/soft/Release/x.xx/setup.bash for example Then do “make” at the Jupiter top director. To run, type $ Jupiter … prompt> /run/beamOn 100 Read pythia_event.data and hit information is written in a file, hit.dat How to build and run Jupiter

14. 14 Standalone Jupiter $ Jupiter [options] [g4macro file] options: -v N : N is a message level. > 10 ; Write message every time new geometry is created. 5-10 ; Write message of geometry whose rank is less than N-4. < 5 ; No message is written at geometry creation. -f FILE : Read parameters from the file FILE More than one -f option can be specified. In this case a value in the first file is used. -w : Write default parameters defined in the program to the file, jupiter.defaults -help : Print help message Useful to display events and debug

15. 15 G4macro file Commands to Geant4 and Jupiter are provided as a g4macro file. A list of commands can be found at When Jupiter is executed as a standalone application interactively, help command can be used to get help information. http://www-jlc.kek.jp/~miyamoto/Jupiter/html/_.html

16. 16 Jupiter parameter list file Parameters for detector configuration can be modified by a parameter file given by –f option. Default parameters defined in the program is prepared in $JUPITERROOT/doc/gld_v1.dat $JUPITERROOT/doc/HowToRun for more details

17. 17 HepStd and LCIO Interface module to HepStd and LCIO are provided as JSF modules. HepStd  ASCII format : using LCHEP package  Binary format : using MCFIO package ( implemented very recently, needs more study ) LCIO  Exact hit points and MCParticle data can be written as LCIO file.  Links between Exact hits and MCParticle are not perfect yet.

18. 18 Satellites/Uranus

19. 19 JSFJ4 Interface to run Jupiter in JSF environment. Allows to write  Jupiter output by ROOT or LCIO  Use generators in JSF or StdHep format file. Satellites package reads ROOT file created by JSFJ4

20. 20 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

21. 21 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

22. 22 …. cd c 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 Satellites Directory Structure Leda j42lcio Output LCIO data examples macro

23. 23 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 Metis Directory Structure jet jetmaker make jet Objects

24. 24 Uranus data src lib include kern hybt VTX Uranus Directory Structure Packages for real data analysis IT TPC detconfig hitmaker trackmaker

25. 25 U4XXXTrackHit S4XXXTrackHit U4VTrackHit double fResidual double fT0 U4VHit *fHitPointer U4VTrack U4XXXTrack TObjArray S4XXXTrack double fChi2 U4VTrackMaker* fU4V JSFHelicalTrack* fHT U4XXXHit S4XXXHit double fError S4XXXExactHit *Hit Relation among TrackHits

26. 26 Relation among CAL Hits S4CALHit S4VHit TObjectTAttLockable +GetExactHitsPtr() +GetAddress() +GetHitPosition() + GetCALType() +GetClusterType() S4CALExactHit + GetPreHitPtr() S4VExactHit GetAddressPtr() GetSmearedHitPtr()

27. 27 Typical results

28. 28 Momentum resolution Exact hit points created by single  were fitted by Kalman filter package  pt /p t 2 (GeV -1 ) By A.Yamaguchi(Tsukuba)

29. 29 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

30. 30 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

31. 31 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.

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

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

34. 34 Jet energy resolution e + e -  Z  q qbar at sqrt(E)=91.1GeV By Sumie Yamamoto

35. 35  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

36. 36 Satellites examples Exam01 Exam02 Exam03 Exam04 Exam05 Exam06 Exam07 Analysis code examples

37. 37 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.