1. 10/26/2005 ATLAS Visit Dr Pierre Coulombe President, National Research Council Canada Short introduction by Peter Jenni and Robert Orr

2. 10/26/2005 ATLAS Collaboration 34 Countries 153 Institutions 1650 Scientific Authors total (1330 with a PhD, for M&O share) Canada46 Scientific Authors (35 holding a PhD) Albany, Alberta, NIKHEF Amsterdam, Ankara, LAPP Annecy, Argonne NL, Arizona, UT Arlington, Athens, NTU Athens, Baku, IFAE Barcelona, Belgrade, Bergen, Berkeley LBL and UC, Bern, Birmingham, Bologna, Bonn, Boston, Brandeis, Bratislava/SAS Kosice, Brookhaven NL, Bucharest, Cambridge, Carleton, Casablanca/Rabat, CERN, Chinese Cluster, Chicago, Clermont-Ferrand, Columbia, NBI Copenhagen, Cosenza, INP Cracow, FPNT Cracow, Dortmund, JINR Dubna, Duke, Frascati, Freiburg, Geneva, Genoa, Glasgow, LPSC Grenoble, Technion Haifa, Hampton, Harvard, Heidelberg, Hiroshima, Hiroshima IT, Indiana, Innsbruck, Iowa SU, Irvine UC, Istanbul Bogazici, KEK, Kobe, Kyoto, Kyoto UE, Lancaster, Lecce, Lisbon LIP, Liverpool, Ljubljana, QMW London, RHBNC London, UC London, Lund, UA Madrid, Mainz, Manchester, Mannheim, CPPM Marseille, Massachusetts, MIT, Melbourne, Michigan, Michigan SU, Milano, Minsk NAS, Minsk NCPHEP, Montreal, McGill Montreal, FIAN Moscow, ITEP Moscow, MEPhI Moscow, MSU Moscow, Munich LMU, MPI Munich, Nagasaki IAS, Naples, Naruto UE, New Mexico, Nijmegen, BINP Novosibirsk, Ohio SU, Okayama, Oklahoma, LAL Orsay, Osaka, Oslo, Oxford, Paris VI and VII, Pavia, Pennsylvania, Pisa, Pittsburgh, CAS Prague, CU Prague, TU Prague, IHEP Protvino, Ritsumeikan, UFRJ Rio de Janeiro, Rochester, Rome I, Rome II, Rome III, Rutherford Appleton Laboratory, DAPNIA Saclay, Santa Cruz UC, Sheffield, Shinshu, Siegen, Simon Fraser Burnaby, Southern Methodist Dallas, NPI Petersburg, Stockholm, KTH Stockholm, Stony Brook, Sydney, AS Taipei, Tbilisi, Tel Aviv, Thessaloniki, Tokyo ICEPP, Tokyo MU, Toronto, TRIUMF, Tsukuba, Tufts, Udine, Uppsala, Urbana UI, Valencia, UBC Vancouver, Victoria, Washington, Weizmann Rehovot, Wisconsin, Wuppertal, Yale, Yerevan

3. 10/26/2005 ATLAS Organization ATLAS Plenary Meeting Collaboration Board (Chair: S. Bethke Deputy: C. Oram) Resources Review Board Spokesperson (P. Jenni Deputies: F. Gianotti and S. Stapnes) Technical Co-ordinator (M. Nessi) Resources Co-ordinator (M. Nordberg) Executive Board CB Chair Advisory Group Inner Detector (L. Rossi, K. Einsweiler M. Tyndel, F. Dittus) Tile Calorimeter (B. Stanek) Magnet System (H. ten Kate) Computing Co-ordination (D. Barberis, D. Quarrie) Electronics Co-ordination (P. Farthouat) LAr Calorimeter (H. Oberlack, D. Fournier, J. Parsons) Muon Instrum. (G. Mikenberg, F. Taylor, S. Palestini) Trigger/DAQ (C. Bee, N. Ellis, L. Mapelli) Physics Co-ordination (G. Polesello) Additional Members (H. Gordon, A. Zaitsev)

4. 10/26/2005 Diameter25 m Barrel toroid length26 m End-cap end-wall chamber span46 m Overall weight 7000 Tons ATLAS superimposed to the 5 floors of building 40 ATLAS Just a few examples will be shown in the following…

5. 10/26/2005 The last Barrel Toroid coil was moved into position on 25 th August and the structure was released from the external supports on 29 th September

6. 10/26/2005 Insertion of the 3 rd cylinder (out of the four) into the barrel SCT All four barrel cylinders are complete and at CERN, the integration into the cylindrical support structure has been recently completed Silicon Tracker (SCT)

7. 10/26/2005 ATLAS Barrel Calorimeter The mechanical installation of the LAr and Tile Barrel Calorimeters in the pit has been completed end of 2004 on the support trucks below the access shaft on the C-side The installation of electronics and services is ongoing, including also services for the ID The Barrel Calorimeter is scheduled to move into the completed Barrel Toroid early November In the meantime first cosmic ray events have been registered in part of the Tile Calorimeter as show in the event display below

8. 10/26/2005 And the end-caps are coming soon… here the LAr end-cap C on its way (22 nd September)

9. 10/26/2005 Muon Chambers The series chamber production will be completed by the end of the year for all chamber types Installation in the cavern has started

10. 10/26/2005 Summary representation of the installation activities in the experimental cavern at Point-1

11. 10/26/2005 SDX1 USA15 UX15 ATLAS Trigger / DAQ Data Flow ATLAS detector Read- Out Drivers ( RODs ) First- level trigger Read-Out Subsystems ( ROSs ) UX15 USA15 Dedicated links Timing Trigger Control (TTC) 1600 Read- Out Links Gigabit Ethernet RoI Builder pROS Regions Of Interest VME ~150 PCs Data of events accepted by first-level trigger Event data requests Delete commands Requested event data stores LVL2 output Event data pushed @ ≤ 100 kHz, 1600 fragments of ~ 1 kByte each Second- level trigger LVL2 Super- visor SDX1 CERN computer centre DataFlow Manager Event Filter (EF) pROS ~ 500~1600 stores LVL2 output dual-CPU nodes ~100~30 Network switches Event data pulled: partial events @ ≤ 100 kHz, full events @ ~ 3 kHz Event rate ~ 200 Hz Data storage Local Storage SubFarm Outputs (SFOs) LVL2 farm Network switches Event Builder SubFarm Inputs (SFIs)

12. 10/26/2005 This is the first successful use of the grid by a large user community in ATLAS Very instructive comments from the user feedback have been presented at the recent ATLAS Physics Workshop (obviously this was one of the main themes and purposes of the meeting) Physics simulation work on the grid for the Rome Physics WS

13. 10/26/2005 99 entries (21 F plus 78 M) 441 registered participants 5 th ATLAS Physics WS Rome 6-11 June 2005

14. 10/26/2005 Search for the Higgs boson ATLAS H  ZZ (*)  4

15. 10/26/2005  s = 14 TeV corresponds to E ~ 100 PeV fixed target proton beam The LHC will be the first machine able to explore the high-E part of the cosmic ray spectrum Are there links with astrophysics and cosmology ? Yes, many ….

16. 10/26/2005 ATLAS Canada Alberta Carleton McGill Montréal Simon Fraser Toronto TRIUMF UBC Victoria York 33 University/Lab.physicists Over 88 people, including Engineers, Technicians, Students Includes 3 IPP Research Scientists Educational Role 20 UG Summer Students 21 Graduate Students 13 Post Docs Focus on Liquid Argon Calorimetry 4 NSERC Funded Construction Projects Endcap Hadronic Calorimeter Forward Hadronic Calorimeter Front-End-Board Electronics Endcap Signal Cryogenics Feedthroughs Construction completed last year End of Installation this year Commissioning in 2006 Ongoing/Future Activities Analysis of Beam Tests Calorimeter Calibration Preparation for Physics Event Filter Algorithms/Ops Computing - soft/hard Beam Condition Monitors

17. 10/26/2005 Liquid Argon/Metal Charged Particle Kinetic Energy of Particle Converted to Ionization Of Liquid Argon Electrical Signal Proportional to Incoming Energy Why Is It Called a Calorimeter? Readout Electronics

18. 10/26/2005 Calorimeters as Physics Tools Forward Jet Identification

19. 10/26/2005 Cryogenic Signal Feedthroughs Over 180k signal channels in the LAr calorimeter High density and reliability required: 1920 pins per feedthrough unit University of Victoria TRIUMF

20. 10/26/2005 Hadronic Endcap Calorimeter Composed of 2 wheels per end Front wheel:67 t 25 mm Cu plates Back wheel:90 t 50 mm Cu plates TRIUMF, Alberta Rear Wheel 2 Front and Rear Modules Wheel Assembly Front Wheel

21. 10/26/2005 HEC 2 A-wheel on the insertion stand, Aug. 2004

22. 10/26/2005 Four Modules Each 0.9 m Diam, 0.45 m long Total 20 Tonnes Tungsten Carleton, Toronto FCAL1 FCAL2 FCAL3 Plug3 Forward Calorimeter Completed Module Tungsten-Copper Internal Structure

23. 10/26/2005 LAr Forward Calorimeters FCAL Carleton, Toronto

24. 10/26/2005 EndCap C … Final Integration Already cold tested in B180. Will see at Point 1

25. 10/26/2005 Calorimeter Readout Electronics Switched Capacitor Array SCA ControllerMicroelectronics development and testing at ALBERTA

26. 10/26/2005 HLTHLT DATAFLOWDATAFLOW 40 MHz 75 kHz ~2 kHz ~ 200 Hz 120 GB/s ~ 300 MB/s ~2+4 GB/s Event Building N/work Dataflow Manager Sub-Farm Input Event Builder EB SFI EBN DFM Lvl2 acc = ~2 kHz Event Filter N/work Sub-Farm Output Event Filter Processors EFN SFO Event Filter EFP ~ sec ~4 GB/s EFacc = ~0.2 kHz Trigger DAQ RoI Builder L2 Supervisor L2 N/work L2 Proc Unit Read-Out Drivers FE Pipelines Read-Out Sub-systems Read-Out Buffers Read-Out Links ROS 120 GB/s ROB LV L1 D E T R/O 2.5  s Calo MuTrCh Other detectors Lvl1 acc = 75 kHz 40 MHz ROD LVL2 ~ 10 ms ROIB L2P L2SV L2N RoI RoI data = 1-2% RoI requests Trigger, DAQ and Detector Control Alberta, McGill

27. 10/26/2005 TDAQ Setup in Combined Test Beam LVL1 DFM gateway in bdg.513 SFI Tracker Calo Muon det. LVL1 calo ROS RPC ROS TGC ROS CSC ROS LVL1 mu Tile ROS TRT ROS SCT ROS Pixel ROS LAr ROS MDT monitoring run control pROS data network (GbE) MAGNI farm in bdg. 513 SFO remote farms storage CASTOR (IT) LVL2 farm in H8 EF farm Compared to ATLAS ~10% of DAQ ~2% of HLT just counting PCs… Compared to ATLAS ~10% of DAQ ~2% of HLT just counting PCs… ALBERTA

28. 10/26/2005 First ATLAS Physics Calorimeter-based analyses Expect calorimeters to be in relatively good shape compared to other systems for first collisions Some high-profile analyses rely on the jets plus missing transverse energy signature e.g. –Search for dark matter candidate (lightest, stable, supersymmetric particle) –Large extra dimension scenario Other topics: jets or em clusters e.g. –Search for high-mass resonances (Z’,W’,excited leptons, etc.)

29. Search for the Higgs Boson Vector boson fusion dominates favoured Higgs mass range Relies on calorimeter tagging forward jets Extensive VBF studies performed by Canadian group (including 2 theses) WW  l l analysis performed by Canadians at Fermilab