1. ILD Detector Optimization and Benchmarking Akiya Miyamoto, KEK at Tsinghua University 12-January-2009

2. ILD Introduction ILD origins in the European and Asian based Large Detector study. 2 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 LDC GLD ILC Reference Design (RDR) in 2007  GLD Detector Outline Document (DOD) arXiv:physics/0607154  LDC DOC http://www.ilcldc.org/http://www.ilcldc.org/ Common feature: Tracker(Pixel & Silicon & Gas) + PFA calorimeter + … At LCWS2007, we agreed to work together for a joint LOI  GLD (B=3T, R ECAL =2.1m) + LDC(B=4T, R ECAL =1.6m )  ILD

3. International Large Detector ( ILD ) LDC and GLD had a common future;  Pixel vertex detector placed very close to the beam pipe.  Gaseous tracker, TPC, for highly efficient and precise track measurements, supplemented by silicon trackers.  EM and HD calorimeters are placed inside a solenoid field and read our by very small sensors to achieve a good energy measurement by Particle Flow Analysis (PFA). 3 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 But in detail:  B=4 Tesla(LDC) vs 3 Tesla(GLD)  ECAL radius: 1.6m(LDC) vs 2.1m(GLD)  Sub Detector technologies  …. Simulation studies of physics performances are used to reach agreement of detector parameters.

4. How we optimize Optimization tools  GLD  Jupiter/Sattelites, LDC  Mokka/MarlinReco  intermediate detector models were introduced for comparison GLDPrim by Jupiter, and LDCPrim by Mokka, both having B=3.5T and R ECAL =1.85m. 4 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Performances have been studies as a function of major parameters. Reached a consensus on the ILD reference detector for LOI benchmark studies at Cambridge (Sep. 2008). Physics performance studies have been performed based on ILD model.

5. Jupiter/Satellites for Full Simulation Studies : GLD 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 Akiya Miyamoto, KEK 5 Seminar at Tsuingha Univ., 12-Jan-2009

6. Mokka − Mokka is a full simulation using Geant4 and a realistic description of a detector for the future linear collider. − Home page: http://polzope.in2p3.fr:8081/MOKKA Mokka is now a part of the ilcsoft, http://ilcsoft.desy.de/portal/software_packages/http://polzope.in2p3.fr:8081/MOKKAhttp://ilcsoft.desy.de/portal/software_packages/ LDC Akiya Miyamoto, KEK 6 Seminar at Tsuingha Univ., 12-Jan-2009 ex. ECAL structure  − Detector Geometry: − managed by MySQL data base and CGA (Common Geometry Access) API. − LDC and other variants are prepared and used for ILD optimization. − Implementation of detailed detector model based on engineering studies is in progress.

7. PandoraPFA LCFIVertex

8. GLD + LDC Combined Framework 8 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Whizard Physsim StdHep MOKKA Jupiter LCIO Marlin Sattelites LCIO DST and Analysis LDCGLD StdHep: Same generator data LCIO: Common IO format GLDPrim/LDCPrim: Similar detector model LCIO helps to collaborative works for detector optimization After the LOI, two frameworks will be merged to a single framework.

9. Detector Parameters for Opt. studies GLD/GLDPrim/J4LDC  prepared for Jupiter LDC/LDCPrim/LDCGLD  prepared for Mokka  Physics performance was compared between different geometries 9 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 JupiterMokka GLDGLDPrimJ4LDCLDCGLDLDCPrimLDC B(T)3.03.54.03.03.54.0 VTX Rmin (cm)1.751.61.51.651.501.4 # VTX layers3 x double super layers5 layers # IT layers4 layers2 layers TPC Rmin(cm)43.743.534.037.1 ECAL Rmin(cm)210185160202182.5161 HCAL Thick. (Int.L)6.796.295.675.86 Geometryiesin Mokka and Jupiter are similar, but there are many small differences in geometry and assumed detector technologies

10. Pt resolution 10 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 LDC : ~5% worse at high Pt  Shorter Lever arm GLD/GLD’: ~10%worse at low Pt  Lower B Single muon, produced at cos  =0. by Jupiter+Satellites: TPC+IT+VTX fitting

11. GLDPrim - LDCPrim 11 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 LDCPrim(Mokka+Pandora) is better than GLDPrim(Jupiter+Sattelites) by 15~30%. Possible source:   r  (IT) 4  m(LDCPrim)  10  m(GLDPrim)  Silicon External Tracker in Mokka 3x10 -5 Sub-detector technology is more important than geometry 4m4m

12. GLDPrim vs LDCPrim (  r  (IP)) 12 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 GLDPrim is better than LDCPrim ; 3 double layers vs 5 layers ? Fast sim. study by M.Berggren  r  =  Z =2.8  m

13. kaon_0L Energy Resolution 13 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Hadron Model: LCPhysics HCAL response is not smooth around 13 GeV - LE/HE behaviour ECAL resolution: same

14. Jet measurement: Particle Flow Analysis 14 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 PFA: Charged particles  by Tracker Neutral particles  by Calorimeter, remove charged particle energies Performance studies depend on shower simulation; longitudinal, lateral, and tof distribution, neutron response, etc.

15. Jupiter data analyzed by PandoraPFA 15 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Ejet(GeV) Z pole uds-pair events:GLDPrim Pandora PFA: Sophisticated algorithm tuned to Geant4 shower shape has achieved the performance goal of ILC,  E/E ~ 30%/√E

16. Jet Energy Resolution 16 Akiya Miyamoto, KEKSeminar at Tsuingha Univ., 12-Jan-2009 Same trend is seen by analysis of Jupiter models, though performance is slightly worse than Mokka model Same trend is seen by analysis of Jupiter models, though performance is slightly worse than Mokka model

17. ECAL Seg. and HCAL thickness ILD: ECAL+HCAL= 6.8 Int. L.(48layers) 6.8 Int. L look OK, but worse resolution is seen for 90 o jets. by M. THomson −Performance is strong function of ECAL seg. size. −2x2cm 2 too large, 1x1cm 2 would be ok for jets with E < 100 GeV Akiya Miyamoto, KEK 17 Seminar at Tsuingha Univ., 12-Jan-2009

18. Physics Benchmark Studies ILC goal  precise studies of Tera scale physics. 18 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Signal processes: the minimum set.  Recoil mass measurement by e + e -  ZH  e + e - /     + H  H  c cbar decay in e + e -  ZH process  e + e -  t tbar  6 jets and t (tbar) charge ID for A FB meas.  e + e -   +  - and  pol. measurement.  Separate WW and ZZ in Chargino/Neutrino pair production process According to the request by ILC Research Director (RD) and International Detector Advisory Group(IDAG), simulation studies for LOI should  based on a realistic Monte Calro program  based on a realistic reconstruction program  include backgrounds by physics processes and those caused by accelerator.

19. Higgs recoil mass meas. e + e -  ZH  e + e - X /  +   X, Ecm=250 GeV, 250 fb-1 Analysis.  Select e + e - /  +  - consistent with Z and study recoil mass  Precise track meas. is a key for 19 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 GLDprim case, with backgound e + e - Channel  +    channel Compare 3 geometries + X+ X Differences are small. by Itoh Kazutoshi

20. Benchmark study: Example 20 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Using several detector models, performance to separate W/Z in jet mode have been studied using SUSY processes by Taikan Suehara

21. e+e-  +-,  e+e-  +-,   21 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009  is polarized  probe New Phyaics SM SM+NP by Taikan Suehara

22. ILD reference detector model At 2 nd ILD WS at Cambridge, we agreed to created the new model, ILD reference design model for LOI, in Mokka: Model parameters,  B=3.5 Tesla  Rin ECAL=185cm, TPC: halfZ=230cm  VTX three double layers.  Silicon trackers: ( SIT, FTD, SET, SOT)  Calorimeters (ECAL 22X0, 0.5x0.5cm, HCAL )  …. 22 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009  for the sake of simulation, some detector technologies are assumed in Mokka. But as ILD, many detector technologies are open and not selected at the time of LOI.  By the time of LOI, we have no time to merge Jupiter/Sattelites and Mokka/Marlin framework. A work to merge two framework for “ILD Software” will come after LOI.

23. CAD Model Mokka model

25. ILD_00 MC/DST production ILD performance are expected to be similar to GLDPrim/LDCPrim. But for consistent and complete study, new MC&DST production has been lunched with an improved software. Akiya Miyamoto, KEK 25 Seminar at Tsuingha Univ., 12-Jan-2009 Started since Dec. last year, using GRID  Goal: 250 fb-1 @ 250 GeV, 500 fb-1@500 GeV, Signal + SM background StdHep (@SLAC)  Sim(Mokka), reconstruction and DST maker. DST contents:  lcio format  contains : Tracks, PFOs, [23456]-Jets, LCFIVertex, MCParticls,.. Production profile: Typical CPU time: ~0.5 min.(  ) to 4min.(6 f ) Typical event size ( for uds-pair @ 500 GeV ) Sim. ~950kb, Rec.~1800kb, DST ~ 23kb

26. ILD_00 MC/DST production Akiya Miyamoto, KEK 26 Seminar at Tsuingha Univ., 12-Jan-2009 EcmSignal EventsNEventsL [1/fb]  Sig1: ZH, Z  ee/  105k4624 Sig2: ZH, Z , H  qq 194k1000 Sig3: ZH, Z  qq, H  qq 567k1000  Sig4: ee   2385k517 Sig5 : ee  tt  bbqqqq 1012k3737 Sig6: ee              137k678 SM (250GeV)NEventsL [1/fb] 2 f (w/o ee) 1314k3.8 4f4f 10631k772 6f6f 200k3753k ee 95k0.0014   X 00 eeee 00 nn 00  n  00 SM (500GeV)NEventsL [1/fb] 2 f (w/o ee,  ) 760k14.3 4f4f 2610k42.4 6 f (w/o bbqqqq ) 624k1221 ee 00.0   X 544k3560 eeee 00 nn 00  n  00 @ last week Rough summary: ~ 23M events O(50) TB Sim/Rec. files ~ 0.5 TB DSTs so far Production continues

27. GRID for MC production GRID provides  Huge CPU and storage resources  A way to communicate world wide VO ILC is hosted by DESY, based on LHC Computing GRID  MC production and production are running on GRID  Simulated, Reconstructed, and DST are placed on GRID. DST: 20~50 MB x O(10k) files or more. In Japan,  Replications of DST to KEK/Tohoku/Kobe U. sites are in progress in parallel to the production.  Resources in KEK will be increased in near feature. 27 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009 Grid KEK DESY IP2P3 UK more …

28. Summary ILD has been optimized ILD MC and DST production is in progress, for performance studies of LOI  3 rd Workshop will be held at Seoul in Feb 16-18,  LOI is due March 31. Presented at TILC09 ( 17-21, April )  Detector TDR phase will follow. Many physics channels are yet to be analyzed. Your participations are welcomed. 28 Akiya Miyamoto, KEK Seminar at Tsuingha Univ., 12-Jan-2009

29. Backup Slides