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The SLAC ATLAS Program: Overview and Budget

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  1. The SLAC ATLAS Program: Overview and Budget David MacFarlane For the SLAC ATLAS group The SLAC ATLAS Program: Overview and BudgetPage 1

  2. Outline • Introduction and overall strategic direction • Present and future HEP program at SLAC • Opportunities and ambitions for SLAC/ATLAS program • Overview of current ATLAS activities • Activities on pixel and tracking systems, DAQ and high-level trigger (HLT) systems, simulations, upgrade R&D, and planning for enlarged computing role • Budget overview and conclusions • Challenges and support requirements The SLAC ATLAS Program: Overview and BudgetPage 2

  3. Near-term and ongoing HEP programs • Play a significant role in ATLAS & LHC accelerator commissioning, initial science analyses, & computing • Facilitate optimal exploitation of the BABAR dataset as scientific payoff for decade of B Factory operations • Operate the LAT for Fermi GST, and continue to spearhead scientific discovery with this unique observatory • Maintain a world-class accelerator-science program, including enabling role in technology development for the ILC and leading high-gradient X-band research in the US • Maintain world-leading theoretical programs in particle physics and particle astrophysics and cosmology The SLAC ATLAS Program: Overview and BudgetPage 3

  4. Future HEP programs • Expand ATLAS program to include a major role in the upgrade of the ATLAS detector and the LHC machine • ATLAS Phase 1 and 2 upgrades: Tracking and TDAQ systems • Enhance ATLAS computing for physics exploitation of the LHC data • Extend LHC machine contributions to include upgrade collimators, development of PS2 design, & LLRF & feedback improvements • Exploit synergies between detector and accelerator communities • Construct and operate FACET for forefront experiments in beam-driven plasma wakefield acceleration • Bring LSST into development as a joint NSF-DOE project • Participate in JDEM construction, development, and science analyses The SLAC ATLAS Program: Overview and BudgetPage 4

  5. Future HEP programs • Develop and construct a ton-scale version of EXO for the initial suite of mid-scale experiments at DUSEL • Facilitate a significant US role in SuperB in Italy and participate in Project-X rf power systems R&D • Perform state of the art experiments in laser dielectric acceleration and develop high power X-band rf sources • Initiate and maintain R&D efforts to enable longer-range future programs such as SiD, GeODM, and AGIS The SLAC ATLAS Program: Overview and BudgetPage 5

  6. Why was it crucial for SLAC to join ATLAS? • The most compelling questions in particle physics can only be addressed at the energy frontier • The best way of sustaining a vibrant energy frontier community for a future linear collider is to be engaged now • The energy frontier is the highest priority program for the national user community & our traditional user base • ATLAS is the future for our accelerator-based program, and therefore the glue tying together the HEP program at SLAC Led to SLAC to become a member of ATLAS in July 2006 The SLAC ATLAS Program: Overview and BudgetPage 6

  7. Initial challenges and opportunities • Late entry into a major worldwide collaboration with established players and institutional responsibilities • Major impact still achieved by operating in a service mode to resolve many real issues arising during commissioning over the last 3 years • Core capabilities and unique expertise from constructing & operating BABAR are now being applied to ATLAS • Gaining an understanding with OHEP about the level of growth has been challenging with OHEP programmatic reorganization • Our goal is to significantly strengthen the US ATLAS effort by the infusion of a large and experienced SLAC team The SLAC ATLAS Program: Overview and BudgetPage 7

  8. Who is involved from SLAC? Faculty: Andy Haas (Panofsky Fellow), David MacFarlane, Ariel Schwartzman (Asst Prof), Su Dong Scientific staff: Makoto Asai, Rainer Bartoldus, Mark Convery, Norman Graf, Philippe Grenier, Jasmine Hasi, Michael Kelsey, Chris Kenney, Peter Kim, Martin Kocian, Richard Mount, Tim Nelson, Rich Partridge, Bill Wisniewski, Dennis Wright, Charles Young Technical staff: Karl Bouldin, Richard Claus, Gunther Haller, Ryan Herbst, Mike Huffer, Jim McDonald, David Nelson, Marco Oriunno,James Panetta, Andy Salnikov, Leonid Sapozhnikov, Douglas Smith, Wei Yang, Matthias Wittgen The SLAC ATLAS Program: Overview and BudgetPage 8

  9. Who is involved from SLAC? Postdocs: Ignacio Aracena, Sarah Demers, Matthew Graham, Per Hansson, Claus Horn, Paul Jackson, Silke Nelson, Michael Wilson Graduate Students: Jim Black, Bart Butler, David Miller, Dan Silverstein The SLAC ATLAS Program: Overview and BudgetPage 9

  10. Presentations on SLAC/ATLAS program Talk 1: Pixel System and Simulations - Charlie Young Talk 2: DAQ and trigger - Rainer Bartoldus Talk 3: Physics tools and physics preparation - Ariel Schwartzman Talk 4: Upgrade R&D - Su Dong Talk 5: ATLAS analysis and planning for a Western Data Analysis Facility - Richard Mount The SLAC ATLAS Program: Overview and BudgetPage 10

  11. LHC upgrade timeline Inner layer of Si Strips begins to die> 700 fb-1 Calorimeter electronics ~same ATLAS Inner b-layer of pixels begins to die >300 fb-1 Inner TRT layer >1034 Installation of Phase 1 Phase 1 TDR/MOU Inner Detector Layout Earliest Decision on 1035 Installation of Phase 2 Phase 2 LoI/iMOU FY Total Integrated L~ 250pb-1 50 fb-1 200fb-1 400fb-1 700fb-1 U.S. CD-0 CD-1 CD-3 CD-4 Phase 1 DOE/NSF Panel Review CD-2 CD-0 CD-2 red Phase 2 CD-3 LHC running period The SLAC ATLAS Program: Overview and BudgetPage 11 CD-1

  12. 06 08 10 12 14 16 18 Development & critical service roles Pixel System Stage 1: new inner layer Stage 2: full system upgrade SLAC a major partner in ATLAS, broadly supporting US ATLAS community Development & critical service roles Trigger/DAQ System Stage 1: new architecture & incremental upgrades Stage 2: full system upgrade Physics engagement, computing and regional center growth What is the overall long-term SLAC strategy? The SLAC ATLAS Program: Overview and BudgetPage 12

  13. What is our strategy for taking on ATLAS tasks? Engage in experimental tasks after weighing several different considerations: Importance and urgency of ATLAS needs Match to core competence at SLAC Recognizing and incorporating our own ideas in defining tasks Connection to our physics interests Synergy with other areas of SLAC involvement Synergy with future directions at SLAC Synergy with local US community interests Not narrowly focused on one subsystem, but have tried to maximize integral impact to best utilize individual expertise Establish a broad base to allow future growth The SLAC ATLAS Program: Overview and BudgetPage 13

  14. Pixel System and tracking • Motivation • Interests on b-tag related physics topics (experience from SLD/D0) • Experience on pixel/silicon detectors (SLD/SiD/MK-II/GLAST/BaBar) • Synergy with future silicon based experiment, e.g. SiD • Strong ATLAS encouragement to couple operational experience at SLAC into Pixel final assembly, commissioning and operations Current ATLAS pixel and tracking system activities: Scientific staff: Martin Kocian, Tim Nelson, Ariel Schwartzman, Charles Young Technical staff: Matthias Wittgen Postdocs: Per Hansson, Claus Horn, Paul Jackson, Michael Wilson Graduate Students: Bart Butler, David Miller, Dan Silverstein Project lead, Faculty The SLAC ATLAS Program: Overview and BudgetPage 14

  15. Simulations • Motivation • GEANT4 core support coupled to major LHC user community • Extensive FLUKA experience with Radiation Physics group • Strong ties to experience in MDI and backgrounds at Mark II, SLD, and BABAR • Strong ATLAS encouragement to couple core GEANT4 experience into simulation performance improvements Current ATLAS simulation activities: Scientific staff: Makoto Asai, Norman Graf, Michael Kelsey, Peter Kim, Charles Young, Dennis Wright The SLAC ATLAS Program: Overview and BudgetPage 15

  16. DAQ and High Level Trigger (HLT) • Motivation: • Connection of trigger to physics strategy • Extensive experience from BABAR in particular • Strong electronics and online software capability at SLAC • Strong ATLAS encouragement to couple BABAR trigger and DAQ electronics experience into solving key technical problems Current ATLAS DAQ and HLT system activities: Scientific staff: Rainer Bartoldus, Philippe Grenier, Andy Haas, Su Dong Technical staff: Andy Salnikov Postdocs: Ignacio Aracena, Sarah Demers, Silke Nelson Graduate Students: David Miller, Dan Silverstein Current ATLAS CSC ROD system activities Technical staff: Richard Claus, Gunther Haller, Ryan Herbst, MikeHuffer, James Panetta, Leonid Sapozhnikov The SLAC ATLAS Program: Overview and BudgetPage 16

  17. Upgrade R&D: Pixel System and tracking ATLAS pixel and tracking system R&D related activities Phase 1: Pixel Insertable B-Layer (IBL) development Phase 2 (but some aspects may become incorporated in phase 1): Pixel 3d sensors, mechanical designs, data transmission and stave electrical design, test stand and DAQ Future IBL and full pixel upgrade R&D activities: Scientific staff: Mark Convery, Philippe Grenier, Per Hansson, Jasmine Hasi, Paul Jackson, Chris Kenney, Peter Kim, Martin Kocian, David MacFarlane, Su Dong, Bill Wisniewski, Charles Young Technical staff: Karl Bouldin, Richard Claus, Jim McDonald, David Nelson, Marco Oriunno The SLAC ATLAS Program: Overview and BudgetPage 17

  18. Upgrade R&D: Simulations Pixel and Tracking Systems layout studies Basic upgrade layout design decisions for the future Pixel and Silicon Tracker Systems need simulation support. Exploring use of existing ATLAS simulation tool kit in conjunction with the linear collider framework LCsim (more flexible geometry variations) Future ATLAS tracking system simulation activities: Scientific staff: Richard Partridge, Charles Young Postdocs: Matthew Graham, Michael Wilson The SLAC ATLAS Program: Overview and BudgetPage 18

  19. Upgrade R&D: DAQ and HLT • DAQ and HLT upgrade strategy • Continuous improvements with adiabatic upgrades expected • Much improved HLT computing resource usage • Eventually a new DAQ infrastructure will be required to cope with sLHC data rates Future ATLAS DAQ and HLT system R&D activities: Scientific staff: Rainer Bartoldus, Martin Kocian, Andy Haas, Su Dong Technical staff: Richard Claus, Gunther Haller, Mike Huffer, James Panetta, Andy Salnikov, Matthias Wittgen The SLAC ATLAS Program: Overview and BudgetPage 19

  20. Future computing needs will become clearer with first data Tier 1 likely correctly provisioned for reconstruction Tier 2s will likely struggle to meet simulation and data-intensive analysis, alignment, calibration and HLT validation needs leading to a likely need for Analysis Facilities Options for ATLAS Tier 2 & 3 analysis implementation need clarification and could involve SLAC hosting capabilities SLAC brings experience of BABAR data-intensive analysis Evaluating future Analysis Facility needs Current ATLAS Tier 2 activities: Scientific staff: Richard Mount, Peter Kim Technical staff: Wei Yang, Douglas Smith + SCCS personnel Development of plan for future ATLAS computing role: Scientific staff: Andy Haas, David MacFarlane, Richard Mount The SLAC ATLAS Program: Overview and BudgetPage 20

  21. The Bay Area as a west-coast ATLAS center • CERN cannot host major portions of the LHC collaborations long term • The Bay Area could play a leading role in supporting LHC physics • Concentration of expertise on computing, analysis and detector systems • Proximity of physics analysis support centers, capability for hosting workshops, tutorials and seminars • Attractive training centers due to a combination of tutorials, available expertise, & participation in upgrade activities • Strength of Theory Groups & their strong interest in LHC physics • Working to create a consensus in the US ATLAS community for a viable regional center role The SLAC ATLAS Program: Overview and BudgetPage 21

  22. Summary of challenges to SLAC/ATLAS plan • Migration of core manpower • Viewed as a budget increase in the national proton research program, for which a case must be convincingly argued • Viewed institutionally as a migration of core scientific and technical manpower with directly relevant skills and capabilities • Computing role • Tier 2 computing role relatively minor compared to capability • Developing arguments for significantly enlarged scope of computing support anticipating future directions for demand growth • Scope of US and SLAC role in ATLAS upgrades • Working with US ATLAS community to characterize and prioritize upgrade activities and identify appropriate US roles The SLAC ATLAS Program: Overview and BudgetPage 22

  23. Proposed evolution of ATLAS effort The SLAC ATLAS Program: Overview and BudgetPage 23

  24. Proposed evolution of ATLAS budget The SLAC ATLAS Program: Overview and BudgetPage 24

  25. What lies within the scope of this review? • KA11 proton-accelerator research • Pixel system and simulation activities: Charlie Young • Trigger/DAQ system activities: Rainer Bartoldus • Physics tools and physics preparation: Ariel Schwartzman • Upgrade R&D: Su Dong • Planning for ATLAS computing: Richard Mount • Other related activities outside scope • KA11 Tier-2 center support • KA15 Detector R&D support The SLAC ATLAS Program: Overview and BudgetPage 25

  26. Overall summary and outlook • SLAC is moving to significantly expand our role on ATLAS • Motivated by sustaining an energy frontier physics program at the LHC in the mid-term and eventually the ILC in the future • Matching core capabilities and operational expertise in areas that are unique and/or appropriate for a national lab program • A cornerstone of the future accelerator-based HEP program • Moving forward with indentifying crucial upgrade roles • Plan supports some of the crucial system upgrades that are anticipated to be major future responsibilities for the US community • Taking on appropriate roles for national lab in support the highest priority LHC program • Significantly enlarged ATLAS program will provide a strong anchor on the west coast for maximizing return on US investment in ATLAS The SLAC ATLAS Program: Overview and BudgetPage 26

  27. Backup material The SLAC ATLAS Program: Overview and BudgetPage 27

  28. What is the origin of the growth? The SLAC ATLAS Program: Overview and BudgetPage 28