The SLAC ATLAS Program: Overview and Budget

The SLAC ATLAS Program: Overview and BudgetDavid MacFarlaneFor the SLAC ATLAS group

OutlineIntroduction and overall strategic directionPresent and future HEP program at SLACOpportunities and ambitions for SLAC/ATLAS program Overview of current ATLAS activitiesActivities on pixel and tracking systems, DAQ and high-level trigger (HLT) systems, simulations, upgrade R&D, and planning for enlarged computing roleBudget overview and conclusionsChallenges and support requirements

Near-term and ongoing HEP programsPlay a significant role in ATLAS & LHC accelerator commissioning, initial science analyses, & computingFacilitate optimal exploitation of the BABAR dataset as scientific payoff for decade of B Factory operationsOperate the LAT for Fermi GST, and continue to spearhead scientific discovery with this unique observatoryMaintain a world-class accelerator-science program, including enabling role in technology development for the ILC and leading high-gradient X-band research in the USMaintain world-leading theoretical programs in particle physics and particle astrophysics and cosmology

The SLAC ATLAS Program: Overview and BudgetPage *

Future HEP programsExpand ATLAS program to include a major role in the upgrade of the ATLAS detector and the LHC machineATLAS Phase 1 and 2 upgrades: Tracking and TDAQ systems Enhance ATLAS computing for physics exploitation of the LHC dataExtend LHC machine contributions to include upgrade collimators, development of PS2 design, & LLRF & feedback improvementsExploit synergies between detector and accelerator communitiesConstruct and operate FACET for forefront experiments in beam-driven plasma wakefield accelerationBring LSST into development as a joint NSF-DOE projectParticipate in JDEM construction, development, and science analyses


Future HEP programsDevelop and construct a ton-scale version of EXO for the initial suite of mid-scale experiments at DUSELFacilitate a significant US role in SuperB in Italy and participate in Project-X rf power systems R&DPerform state of the art experiments in laser dielectric acceleration and develop high power X-band rf sourcesInitiate and maintain R&D efforts to enable longer-range future programs such as SiD, GeODM, and AGIS


Why was it crucial for SLAC to join ATLAS?The most compelling questions in particle physics can only be addressed at the energy frontierThe best way of sustaining a vibrant energy frontier community for a future linear collider is to be engaged nowThe energy frontier is the highest priority program for the national user community & our traditional user baseATLAS 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

Initial challenges and opportunitiesLate entry into a major worldwide collaboration with established players and institutional responsibilitiesMajor impact still achieved by operating in a service mode to resolve many real issues arising during commissioning over the last 3 yearsCore capabilities and unique expertise from constructing & operating BABAR are now being applied to ATLASGaining an understanding with OHEP about the level of growth has been challenging with OHEP programmatic reorganizationOur goal is to significantly strengthen the US ATLAS effort by the infusion of a large and experienced SLAC team

Who is involved from SLAC?Faculty: Andy Haas (Panofsky Fellow), David MacFarlane, Ariel Schwartzman (Asst Prof), Su DongScientific 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 YoungTechnical 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

Who is involved from SLAC?Postdocs: Ignacio Aracena, Sarah Demers, Matthew Graham, Per Hansson, Claus Horn, Paul Jackson, Silke Nelson, Michael WilsonGraduate Students: Jim Black, Bart Butler, David Miller, Dan Silverstein

Presentations on SLAC/ATLAS programTalk 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

LHC upgrade timelineATLASU.S.CD-0Phase 1Phase 2Phase 1Phase 2DOE/NSF Panel ReviewCD-1CD-2CD-3TDR/MOULoI/iMOUEarliest Decision on 1035CD-2Inner Detector LayoutFYCD-0CD-3CD-1Total Integrated L~CD-4Installation of Phase 1Installation of Phase 2250pb-150 fb-1200fb-1400fb-1700fb-1LHC running period redInner b-layer of pixels begins to die >300 fb-1 Inner TRT layer >1034Inner layer of Si Strips begins to die> 700 fb-1 Calorimeter electronics ~same


What is the overall long-term SLAC strategy?

What is our strategy for taking on ATLAS tasks?Engage in experimental tasks after weighing several different considerations:Importance and urgency of ATLAS needsMatch to core competence at SLACRecognizing and incorporating our own ideas in defining tasks Connection to our physics interestsSynergy with other areas of SLAC involvementSynergy with future directions at SLAC Synergy with local US community interestsNot 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

Pixel System and trackingMotivationInterests 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. SiDStrong ATLAS encouragement to couple operational experience at SLAC into Pixel final assembly, commissioning and operationsProject lead, FacultyCurrent ATLAS pixel and tracking system activities:Scientific staff: Martin Kocian, Tim Nelson, Ariel Schwartzman, Charles YoungTechnical staff: Matthias WittgenPostdocs: Per Hansson, Claus Horn, Paul Jackson, Michael Wilson Graduate Students: Bart Butler, David Miller, Dan Silverstein

SimulationsMotivationGEANT4 core support coupled to major LHC user communityExtensive FLUKA experience with Radiation Physics groupStrong ties to experience in MDI and backgrounds at Mark II, SLD, and BABARStrong 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

DAQ and High Level Trigger (HLT)Motivation:Connection of trigger to physics strategyExtensive experience from BABAR in particularStrong electronics and online software capability at SLACStrong 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 DongTechnical staff: Andy SalnikovPostdocs: Ignacio Aracena, Sarah Demers, Silke NelsonGraduate Students: David Miller, Dan SilversteinCurrent ATLAS CSC ROD system activitiesTechnical staff: Richard Claus, Gunther Haller, Ryan Herbst, Mike Huffer, James Panetta, Leonid Sapozhnikov

Upgrade R&D: Pixel System and trackingATLAS pixel and tracking system R&D related activitiesPhase 1: Pixel Insertable B-Layer (IBL) developmentPhase 2 (but some aspects may become incorporated in phase 1):Pixel 3d sensors, mechanical designs, data transmission and stave electrical design, test stand and DAQFuture 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 YoungTechnical staff: Karl Bouldin, Richard Claus, Jim McDonald, David Nelson, Marco Oriunno

Upgrade R&D: SimulationsPixel and Tracking Systems layout studiesBasic 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 YoungPostdocs: Matthew Graham, Michael Wilson

Upgrade R&D: DAQ and HLTDAQ and HLT upgrade strategyContinuous improvements with adiabatic upgrades expectedMuch improved HLT computing resource usage Eventually a new DAQ infrastructure will be required to cope with sLHC data ratesFuture ATLAS DAQ and HLT system R&D activities:Scientific staff: Rainer Bartoldus, Martin Kocian, Andy Haas, Su DongTechnical staff: Richard Claus, Gunther Haller, Mike Huffer, James Panetta, Andy Salnikov, Matthias Wittgen

Evaluating future Analysis Facility needsFuture computing needs will become clearer with first dataTier 1 likely correctly provisioned for reconstructionTier 2s will likely struggle to meet simulation and data-intensive analysis, alignment, calibration and HLT validation needs leading to a likely need for Analysis FacilitiesOptions for ATLAS Tier 2 & 3 analysis implementation need clarification and could involve SLAC hosting capabilitiesSLAC brings experience of BABAR data-intensive analysisCurrent ATLAS Tier 2 activities:Scientific staff: Richard Mount, Peter KimTechnical staff: Wei Yang, Douglas Smith + SCCS personnel

Development of plan for future ATLAS computing role:Scientific staff: Andy Haas, David MacFarlane, Richard Mount

The Bay Area as a west-coast ATLAS centerCERN cannot host major portions of the LHC collaborations long termThe Bay Area could play a leading role in supporting LHC physicsConcentration of expertise on computing, analysis and detector systemsProximity of physics analysis support centers, capability for hosting workshops, tutorials and seminarsAttractive training centers due to a combination of tutorials, available expertise, & participation in upgrade activitiesStrength of Theory Groups & their strong interest in LHC physicsWorking to create a consensus in the US ATLAS community for a viable regional center role

Summary of challenges to SLAC/ATLAS planMigration of core manpowerViewed as a budget increase in the national proton research program, for which a case must be convincingly arguedViewed institutionally as a migration of core scientific and technical manpower with directly relevant skills and capabilitiesComputing roleTier 2 computing role relatively minor compared to capabilityDeveloping arguments for significantly enlarged scope of computing support anticipating future directions for demand growthScope of US and SLAC role in ATLAS upgradesWorking with US ATLAS community to characterize and prioritize upgrade activities and identify appropriate US roles

Proposed evolution of ATLAS effort


Proposed evolution of ATLAS budget


What lies within the scope of this review?KA11 proton-accelerator researchPixel system and simulation activities: Charlie YoungTrigger/DAQ system activities: Rainer BartoldusPhysics tools and physics preparation: Ariel SchwartzmanUpgrade R&D: Su DongPlanning for ATLAS computing: Richard MountOther related activities outside scopeKA11 Tier-2 center supportKA15 Detector R&D support


Overall summary and outlookSLAC is moving to significantly expand our role on ATLASMotivated by sustaining an energy frontier physics program at the LHC in the mid-term and eventually the ILC in the futureMatching core capabilities and operational expertise in areas that are unique and/or appropriate for a national lab programA cornerstone of the future accelerator-based HEP programMoving forward with indentifying crucial upgrade rolesPlan supports some of the crucial system upgrades that are anticipated to be major future responsibilities for the US communityTaking on appropriate roles for national lab in support the highest priority LHC programSignificantly enlarged ATLAS program will provide a strong anchor on the west coast for maximizing return on US investment in ATLAS

Backup material

What is the origin of the growth?


***Motive: compelling physics case at the energy frontierFundamental questions in particle physics will be addressed: Origin of mass, nature of quantum gravity, dark matter candidateNear- and mid-term the frontier lies at the LHC as a discovery machine; longer-term the linear collider will be an essential toolMotive: sustaining a vibrant energy frontier communityUncertain time frame for ILC necessitates a two-step strategy of energy-frontier physics now at the LHC and later at the ILCContinue to attract top talent into R&D for ILC, while also maintaining a vibrant & active energy-frontier research programMotive: priority for national user community & US programAligns our program as a national lab with the needs of traditional SLAC users & national priorities set out by P-5 and EPP2010****************

The SLAC ATLAS Program: Overview and Budget

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