Present and Future Program for Elementary Particle Physics

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Present and Future Program for Elementary
Particle Physics

• D. MacFarlane
• PPA Deputy Director Assistant Director for EPP

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Priorities for particle physics program

• B Factory program has been the centerpiece for a
  decade
• Established the origins of CP violation within
  the quark sector and has provided a legacy of
  fundamental constraints on new physics in the LHC
  era that will continue to be explored for many
  years
• Priorities for future program are defined by
  outstanding physics opportunities
• Energy frontier physics at ATLAS at the LHC in
  the near- and mid-term
• A high-energy ee- collider in the longer-term
  future
• Aligned with national priorities, most recently
  reflected in the P-5 report
• Other possible future program components are
  lower priority, not yet fully established
  nationally, are at an earlier stage of
  development
• Includes intensity frontier programs in neutrino
  physics (EXO, CDMS, and the DUSEL program) and
  next generation quark flavor physics (SuperB)

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Reinventing SLACs role as a user laboratory

• No on-site operating facilities, but a national
  laboratory with essential capabilities for
  supporting US particle physics program
• Experimental and theoretical staff who are
  excited about developing an ATLAS physics program
• Electronic mechanical engineering capabilities
  well matched to needs of the ATLAS upgrade
  program
• Computing expertise in large data set systems and
  operation of major hardware systems for data
  management and physics analysis directly
  applicable to ATLAS
• Potential for on-site test beam facility for
  detector development to support ATLAS upgrade
  effort
• Space to host user community on time scales from
  a few day workshop to full time residence
• Based on our future physics priorities we are
  actively migrating these capabilities onto the
  future ATLAS program
• This is a process of reinvention, conducted in
  conjunction with the user community, with both
  challenges and opportunities

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EPP manpower FY08 and FY10
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EPP budget FY08 and FY10
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EPP budget evolution FY07-FY10
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Present and Future support for BABAR
BABAR plenary talks by Hassan Jawahery, Soeren
Prell
Accel-based breakout talks by Ratcliff, Grenier,
Gabareen-Mokhtar, Coleman, Graham
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Shortened FY08 B Factory run

• Impact of curtailment of B Factory operations
• Substantial reduction in Y(4S) sample
  development, but new opportunities created with
  Y(3S) and Y(2S) running
• Transition to minimal maintenance state (MMS) is
  occurring in FY08 for BABAR instead of FY09
• Installed computing hardware at SLAC and software
  support model mostly unchanged
• New data sets on Y(3S) and Y(2S) largely offsets
  loss of additional 4S data, due to larger cross
  sections
• Final reprocessing of the complete data set will
  make long-term archiving compressed to Apr-Oct
  2008
• Modernization of tape silo system for maintaining
  data set long term delayed into FY09-FY10, due to
  very tight budget in FY08

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PEP-II total integrated luminosity 557 fb-1
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Slide redacted
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Critical SLAC role in the future BABAR program

• Support for ongoing exploitation of one of the
  worlds great datasets, which will remain an
  important legacy through much of the next decade
• Direct physicist engagement in physics analysis
• Support for hardware and software infrastructure,
  with SLAC as the primary, and within two years
  only, computing site for BABAR
• Hosting a vibrant and active collaboration both
  during next 2-years of intense analysis, but well
  beyond
• Dismantling and disposal (or re-use) of BABAR and
  PEP-II systems and components
• Significant draw on physicist and technical
  resources

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Post-operational computing model for BABAR

• Major long-term post-data taking commitment
• BABAR has defined a set of core physics analyses
  to be pursued in the first two years post data
  taking
• Long-term analysis period will then follow, based
  on unique and unsurpassed data sample
• Current assumptions, based of revised BABAR plans
• Mid-FY08-FY10 Intense data analysis period with
  aim to publish main physics results
• FY11-FY14 Long-term analysis at reduced level
• Expect BABAR Tier A centers will start to phase
  out from end of 2010 analysis fully reliant on
  SLAC from that point
• Long-term
• SLAC will be the archival site for a unique data
  sample

Scientific computing plenary talk by Gregory
Dubois-Felsmann
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BABAR and PEP-II transition to MMS and DND

• Transition underway to minimal-maintenance state
  (MMS) to protect equipment and secure assets
  while minimizing ongoing costs
• For PEP-II postponed at present to FY09 due to
  budget constraints
• Initial planning for BABAR and PEP-II disassembly
  disposal (DND) in spring 2007, reviewed in
  August 2007
• Main conclusion was that BABAR DND should begin
  at conclusion of data taking
• Potential re-use of PEP-II components likely,
  and, if needed, DND would be as late as 2015
• Revised BABAR DND plan developed for a project
  start in FY09
• Some project planning now in FY08 due to early
  shutdown
• Issue of detector ownership will be settled at
  July BABAR IFC meeting
• Five phases over FY08-FY12 management
  planning, tooling preparation, utilities removal,
  core disassembly, system disassembly

DND breakout talks by Wisniewski and Krebs
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BABAR manpower budget breakdown for FY08
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BABAR budget evolution FY07-FY10
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ATLAS and ATLAS upgrade RD program
ATLAS plenary talks by Charlie Young, Su Dong,
Ariel Schwartzman
Accel-based breakout talks by Bartoldus, Aracena,
Miller, Kocian
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Beginnings of ATLAS role for SLAC

• SLAC joined formally joined ATLAS in June 2006
• Fundamental physics questions will be addressed
  at the energy frontier throughout the next decade
• Strong physics overlap and synergy with ILC
  science program
• Responsive to large US community, including many
  traditional institutional partners
• Initial areas of participation
• Pixel detector operations, calibration, and
  software higher-level trigger and daq
  simulations and Tier 2 center
• All areas that are well matched to established
  capabilities experience we have hit the ground
  running, with real impact
• But, present ATLAS effort is too small for
  national lab effort
• FY07 about 5 FTE physicists, with 1 faculty, 1
  Panofsky Fellow FY08 grew to about 10 FTE
  physicists, plus support
• Upgrade provides both a route to an expanded
  ATLAS effort as well as adding a hardware
  development construction component to portfolio

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Centerpiece for Future ATLAS and ATLAS Upgrades

• ATLAS upgrade provides an excellent opportunity
  to take a leadership role in this experiment in
  the future.
• SuperLHC provides a vehicle for higher energy
  reach for new physics and will be a major part of
  the future national program
• Targeted areas of activity
• Tracker and/or pixel upgrades mechanical, CO2
  cooling, systems design, facilities for
  integrated of test modules eventually
  production
• Simulation and optimization of the design and
  layout
• 3-D pixel detector development, including FEE RD
• DAQ readout digital electronics
• Higher-level trigger design
• Upgrade effort will build on strong working
  relationship with UCSC and LBNL, and will
  establish the Bay Area as a key ATLAS center in
  the U.S.

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ATLAS challenges and opportunities

• Initial trajectory on ATLAS growth is on track,
  but launching an upgrade effort and eventually
  defining upgrade construction roles will be
  challenging
• Develop additional manpower and leadership at
  SLAC, managing transitions from BABAR and SiD
• Defining areas of engagement in upgrade RD,
  matched to our core capabilities, in a coherent
  plan agreed to by US ATLAS and ATLAS management
• Creation of ATLAS physics community centered on
  SLAC, with expanded Tier 2 computing role and
  facilities for hosting users will be a new
  paradigm
• Developing a quorum of expertise, with strong
  coupling to vibrant theory effort directly
  connected to LHC physics
• Facilities office space, meeting rooms,
  organizational support for ATLAS community
  initiatives, ranging from few day workshops to
  long-term residents
• Coupling to upgrade RD effort, and eventually
  construction projects, will be very attractive
  for students and postdocs

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ATLAS white paper in preparation

• In the midst of preparing a white paper that
  provides a detailed model for a substantially
  enlarged ATLAS effort
• Current and potentially expanded roles on the
  existing ATLAS experiment
• Exploring expanded capability for Tier 2 center
• Ability to support major physics- and
  calibration-driven production activities
  potential for hosting Tier 3 resources in a
  cost-effective way tools and core software
  development support
• Developing these ideas will be critical to
  exploiting computing capability and experience
  built up through the BABAR era

Working group Su Dong, C.Young, A.Schwartzman,
R.Bartoldus, T.Nelson, P.Grenier, T.Barklow,
D.Nelson, M.Asai, D.Wright, J.Jaros, A.Salnikov,
M.Wittgen
Working group R.Mount, C.Young, A.Schwartzman,
G.Dubois-Felsmann, H.Neal, N.Graf, M.Kelsey,
P.Kim, W.Yang, D.MacFarlane
Blue New staff or faculty participant
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ATLAS white paper in preparation

• Upgrade RD and future upgrade construction
  effort
• SLAC as a west coast center for ATLAS and ATLAS
  upgrades
• Also need time to engage and consult widely with
  west coast ATLAS community, US/ATLAS and ATLAS
  leadership in formulating these plans
• Original target for completion was mid-June now
  anticipate a finished white paper, with US/ATLAS
  and ATLAS buy-in by September

TDAQ working group M.Huffer, G.Haller, D.Nelson,
R.Claus, R.Bartoldus, Su Dong Pixel/Tracking
working group G.Haller, D.Nelson, T.Nelson,
M.Kelsey, M.Convery, M.Oriunno, W.Wisniewski,
J.Jaros, C.Young, M.Kocian, D.MacFarlane, Su
Dong Simulation working group T.Nelson,
M.Kelsey, M.Convery, N.Graf, P.Kim
Working group A.Schwartzman, M.Peskin, T.Rizzo,
J.Hewett, L.Dixon, M.Convery, T.Barklow,
M.Graham, P.Schuster
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Particle Physics Theory Group

• Overarching program goals
• Committed to providing the highest quality
  research program
• Committed to providing guidance and close
  interaction with the SLAC and wider HEP
  experimental community
• Recent examples include BABAR, ATLAS, linear
  collider, GLAST, DES, LSST, SNAP and other
  programs
• Ties come both through choices of research
  direction, e.g., precision calculations of QCD
  for collider applications, and through direct
  participation in workshops, physics discussions,
  and planning, e.g., ATLAS weekly meetings, west
  coast workshops, and laboratory planning
• Committed to training development of excellent
  researchers
• Main areas of research
• Phenomenolgy and model building Brodsky, Dixon,
  Hewestt, Peskin, Quinn, Rizzo, Wacker, and 7
  postdocs
• Formal Quantum Field Theory and String Theory
  Kachru, Silverstein, Weinstein, and 1 postdoc

Theory plenary talk by Michael Peskin
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Creating future science opportunities
EXO plenary talk by Peter Rowson, Detector RD
talk by John Jaros
Accel-based breakout talks by Graf, Partridge,
Vavra Non-Accel breakout talk by Yang ARD
breakout talk by Weinands
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Other particle physics science opportunities

• Intensity frontier SuperB Flavor Factory
• Facility with 50-100 times present luminosity for
  exploring flavor couplings of New Physics
  discovered at the LHC
• SLAC has been a leader in developing the INFN
  concept and would be an essential partner in
  executing this program, including supplying a
  large fraction of components from PEP-II and
  BABAR
• Intensity frontier Underground Physics
• SLAC is involved in EXO local leadership at
  Stanford in CDMS.
• Could envision a significant facilitating role
  for SLAC in construction of major double-beta
  decay and dark matter experiments at DUSEL, in
  collaboration with LBNL, while Fermilab and BNL
  support long-baseline oscillation experiments.
• Energy frontier RD for a detector at a linear
  collider
• A vigorous program of basic detector RD must be
  pursued in parallel with RD on the machine
• Presently a leader in the SiD detector concept,
  and would expect to take a lead role in the
  realization of such a design in the future.

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Physics case for the SuperB Flavor Factory

• When evidence for New Physics is found at the
  LHC, attention will turn to understanding the
  details
• Is it SUSY? What type of symmetry breaking? Is it
  extra dimensions? Are they warped?
• New heavy quanta can be detected through
  precision measurement of processes involving loop
  diagrams
• Data samples 50 ab-1 or more are needed in most
  cases to reduce the experimental error below the
  theoretical uncertainty
• Challenging accelerator and experiment design
  goal, 50-100 times current B Factories
• With a capability for delivering these large
  samples, SuperB will be crucial to an
  understanding of the flavor sector of any new
  physics
• Is there charged lepton flavor violation? Are
  there new CP phases? Is there a charged Higgs? Is
  there minimal flavor violation in the (s)quark
  sector?

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An expanded role in underground physics

• Many exciting physics questions at the intensity
  frontier with DUSEL, e.g., direct dark matter
  searches and neutrinoless double-beta decay
  searches
• SLAC and Stanford are already identified with two
  suitable candidate ton-scale projects
  non-accelerator projects (EXO and CDMS)
• Getting in at the beginning opportunity to
  define, in partnership for LBNL, a plausible and
  suitable new role
• A very active and growing university community,
  with many ideas and smaller-scale opportunities
  bubbling forward
• No clear lead laboratory yet for DOE/HEP
  investment and support of potential DOE
  investments in large-scale DUSEL experiments
• SLAC underground physics effort is presently
  relatively small and would have to be
  significantly strengthened to support this
  direction
• Would need additional physics leadership and
  would need to expand suitable core engineering
  capabilities

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Balancing opportunities and risks

• These opportunities have a potential for a more
  visible leading, if not critical, role for SLAC,
  but have a higher risk
• Need to balance high priority attached to ATLAS
  growth with strategic investments in a broader
  set of future opportunities
• Limited number of physicists engaged, directing a
  device and detector system RD program that is
  more broadly applicable, while these
  opportunities develop and national priorities
  clarify
• Planned detector RD effort
• Move engineering resources from completed EXO-200
  onto development of a system concept for full EXO
  detector
• Concentrate detector RD for linear collider on
  main issues particle-flow calorimetry,
  high-segmentation calorimetry with integrated
  readout
• Develop precision timing systems for Cherenkov
  detector applications, including SuperB

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Conclusions

• SLAC particle physics program is in transition
  both exciting and a challenge!
• Highly successful program overall from the B
  Factory, including exciting new science
  opportunities from FY08 data set
• Future highest priority program will be where the
  science drives us to the energy frontier with
  ATLAS and ATLAS upgrades
• Significant migration from existing programs will
  invigorate this effort, but there will be
  challenges to reinvent SLAC as a user laboratory
  supporting this new direction
• Need to continue to develop the case for a high
  energy electron collider as the necessary
  complementary tool for elucidating the nature of
  new physics discoveries at the LHC
• Other exciting science opportunities should be
  cultivated, including a major role in the
  intensity frontier program, supporting
  underground physics at DUSEL and a possible
  offshore Super B Factory