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

The SLAC ATLAS Program: Overview and BudgetPage 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 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 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 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 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 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 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 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 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 11 LHC upgrade timeline ATLAS U.S CD-0 Phase 1 Phase 2 Phase 1 Phase 2 DOE/NSF Panel Review CD-1 CD-2 CD-3 TDR/MOU LoI/iMOU Earliest Decision on CD-2 Inner Detector Layout FY CD-0 CD-3 CD-1 Total Integrated L ~ CD-4 Installation of Phase 1 Installation of Phase 2 250pb fb fb fb fb -1 LHC running period red Inner b-layer of pixels begins to die >300 fb -1 Inner TRT layer >10 34 Inner layer of Si Strips begins to die> 700 fb-1 Calorimeter electronics ~same

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

The SLAC ATLAS Program: Overview and BudgetPage 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 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 Project lead, Faculty 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

The SLAC ATLAS Program: Overview and BudgetPage 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 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, Mike Huffer, James Panetta, Leonid Sapozhnikov

The SLAC ATLAS Program: Overview and BudgetPage 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 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 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 20 Evaluating future Analysis Facility needs 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 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 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 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 23 Proposed evolution of ATLAS effort

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

The SLAC ATLAS Program: Overview and BudgetPage 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 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 27 Backup material

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