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Report from WWS and charge to the workshop

Report from WWS and charge to the workshop. Hitoshi Yamamoto 3/3/05 KEK. ILC Parameters. (http://www.fnal.gov/directorate/icfa/LC_parameters.pdf). 1st stage Energy 200→500 GeV 500 fb -1 in first 4 years + 500 fb -1 in next 2 years 2nd stage Energy upgrade to ~1TeV

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Report from WWS and charge to the workshop

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  1. Report from WWS and charge to the workshop Hitoshi Yamamoto 3/3/05 KEK

  2. ILC Parameters (http://www.fnal.gov/directorate/icfa/LC_parameters.pdf) • 1st stage • Energy 200→500 GeV • 500 fb-1in first 4 years + 500 fb-1in next 2 years • 2nd stage • Energy upgrade to ~1TeV • 1000 fb-1in 3-4 years • Options • g g, ge-, e-e-, Giga-Z • To start ~2015 • 2IRs (probably) H.Yamamoto

  3. Technology choice done (ITRP):Things are starting to roll... • The name is officially decided to be ILC (International Linear Collider) • GDE (Global Design Effort) - the first stage of GDI (Global Design Initiative) - is being formed • First ILC workshop (Nov 13-15, KEK) • Second ILC workshop at Snowmass (Aug 2005) LC machine efforts are being re-organized around the cold technology H.Yamamoto

  4. GDE structure H. Yamamoto, Kyoto LHC 2004

  5. Detector Timeline by WWS H.Yamamoto

  6. R&D panel • 3 members from each region, balanced over expertise and region. Close to final selection. • Register the detector R&Ds (incl. MDI) • Evaluate them wrt detector concepts (document it ~Aug 2005) • Coordinate with regional review processes • MDI panel • Liase with machine efforts (GDE) • Existing LCWS leadership of MDI acts as this (Bambade, Woods, Tauchi) • Costing panel • Currently not materializing yet H.Yamamoto

  7. Detector Outline Document • To be completed in Spring 2006 by each detector concept study group, and submitted to WWS • Contents • Description of the concept • Performance estimate wrt physics benchmarks • Required R&Ds and their status • Rough costing estimate • Could be called ‘proto-CDR’ • Real detector CDR not far away (in 2 years) H.Yamamoto

  8. Milestones of ILC (sugimoto) 2004 2005 2006 2007 2008 2009 2010 (Construction) GDE (Design) Technology Choice Acc. CDR TDR Start Global Lab. Detector Outline Documents CDRs LOIs Det. Done! WWS Detector R&D Panel Collaboration Forming R&D Phase Construction Tevatron SLAC B HERA LHC T2K H.Yamamoto

  9. Workshops near future • LCWS 2005, Stanford. 3/18-23/2005 • ACFA 8, DaeGu, Korea, 7/11-14/2005 • Snowmass (ALCPG~WWS), 8/14-27/2005 (~2 weeks) Held together with the ILC workshop • ECFA ~ 11/2005 • LCWS 2006, India ~2 or 3/2006 (Detector concept outline) H.Yamamoto

  10. Detector Performance Goals • Vertexing, b,c tags ... • 1/5 rbeampipe,1/30 pixel size wrt LHC : • Tracking, tagged Higgs ... • 1/6 material, 1/10 resolution wrt LHC : • Jet energy (quark recon.) W,Z separation... • 1/2 resolution wrt LHC : H.Yamamoto

  11. Jet(quark) reconstruction (Important mode if no Higgs is found) • With , Z/Wjj can be reconstructed and separated H.Yamamoto

  12. Detector Concept Studies • SiD - America • Silicon tracker, 5T field, ‘small’ • SiW ECAL • 2 leaders (Jaros, Weerts) + Asian, European contacts • Tesla-based - Europe, now called LDC • TPC, 4T field, ‘medium’ • SiW ECAL • 6 ‘contact persons’ being selected (2 x 3regions) • ‘GLD’ - Asia • TPC, 3T field, ‘large’ • W/Scintillator ECAL • 6 ‘contact persons’ being selected (2 x 3regions) H.Yamamoto

  13. Overall jet energy resolution • sjet2 = sch2 + sg2 + snh2 + sconfusion2 + sthreashold2 • Fine-grain ECAL and HCAL (digital?) • Increase ECAL radius (Rin) to separate clusters • Charged track separation B Rin2 • Neutral separation Rin H.Yamamoto

  14. H.Yamamoto

  15. ‘GLD’ is smaller than CMS H.Yamamoto

  16. Basic parameters H.Yamamoto

  17. Issues • Prove the concept with full simulation of actual jet reconstruction. • Make the concept viable for LOI/Proposal • Moderate B field → larger rbeampipe • Vertex resolution good enough? • Cost of ECAL ? • Use scintillator (SiPM readout) • Will such TPC work? • Endcap detector (large-scale GEM / MicroMEGAS) • Long drift distance (diffusion?). • Solution for vertexing still doest not exist. • Large detector → support design. H.Yamamoto

  18. Current GLD Detector Efforts • Simulation • KEK, Tohoku, Shinshu, Kobe • Calorimeters • Tsukuba, Shinshu, Kobe, Niigata • TPC • Saga, KEK, Tokyo NoKo, Kogakuin, Kinki etc. • Vertexing • KEK, Niigata, Tohoku • DAQ • Tsukuba, KEK • Support • KEK H.Yamamoto

  19. Full Simulator (GEANT4) • Installation of ‘GLD’ into a full simulator “JUPITER” is under way. • Still early stage (tracking, clustering, etc. etc.) • Critical for establishing the detector concept. H.Yamamoto

  20. ECAL →Smaller tiles Sampling optimization SiPM readout ! Shower max layer Scintillator strip ECAL Pb/Scint = 4mm/1mm 4cmx4cm tile (5X5 tiles)x24 layers Fiber readout Beamtest results : (E) = 16.3/√E3.6% H.Yamamoto

  21. SiPM • (42mm)2 cell • Limitted Geiger mode • 1mm2 face • Vbias~50 V • 5 Tesla field OK • QE~0.3 • Fast : s~50 ps • Cheap (~$1/piece?) • Noisy • Quality control H.Yamamoto

  22. TPC Beamtest in B Field Europe/Asia TPC collaboration (MPI, DESY, IPN Orsay + Asian institutions) • JACCEE SC Solenoid • 1~1.2 Tesla • Lage volume • MPI TPC • Study Diffusions etc. Long drift is probably OK(?) H.Yamamoto

  23. GEM Test Pad response function (CERN GEM) CERN GEM : Biconial hole xpad-xtrack Fuchigami GEM needs to be tested. MicroMEGAS? Fuchigami GEM : Straight hole (Chemical etching) H.Yamamoto

  24. Vertexing Detector • The long train (1ms) of cold machine: • large occupancy - need to readout within a train. • Various options pursued worldwide (CPCCD, FAPS, ISIS...) • Fine-Pixel CCD (FPCCD) proposed by Sugimoto. • 5x5 m2 (usually 20x20 m2) • Fully depleted to suppress diffusion → same occupancy as before/reading for whole train. • Read out in train gap (no need to readout during train). Needs an industrial partner. Multi-cell hits by bkg? H.Yamamoto

  25. H.Yamamoto

  26. Summary and charges • After ILC technology decision, concrete detector design efforts are now starting worldwide - 3 main concepts. • We are pushing detector R&D efforts : • around ‘GLD’ which is to be a global effort, • with/within horizontal international collaborations • TPC collaboration (LCTPC), Calorimeter (CALICE), etc. • Items particularly critical for GLD (Among many critical items) • Low-cost and high performance ECAL • Proof of concept by realistic simulations • Jet energy resolution • Vertex resolution • ILC accelerator design needs inputs from physics/detector studies • #IR, crossing angle, options, physics benchmarks ... H.Yamamoto

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