Present and Future Program for Elementary Particle Physics - PowerPoint PPT Presentation


PPT – Present and Future Program for Elementary Particle Physics PowerPoint presentation | free to download - id: 211e1c-M2ViM


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation

Present and Future Program for Elementary Particle Physics


Formal Quantum Field Theory and String Theory:: Kachru, Silverstein, Weinstein, ... New heavy quanta can be detected through precision measurement of processes ... – PowerPoint PPT presentation

Number of Views:44
Avg rating:3.0/5.0
Slides: 29
Provided by: ncr50


Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Present and Future Program for Elementary Particle Physics

Present and Future Program for Elementary
Particle Physics
  • D. MacFarlane
  • PPA Deputy Director Assistant Director for EPP

Priorities for particle physics program
  • B Factory program has been the centerpiece for a
  • 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
  • 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
  • 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
  • Includes intensity frontier programs in neutrino
    physics (EXO, CDMS, and the DUSEL program) and
    next generation quark flavor physics (SuperB)

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
  • 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
  • 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

EPP manpower FY08 and FY10
EPP budget FY08 and FY10
EPP budget evolution FY07-FY10
Present and Future support for BABAR
BABAR plenary talks by Hassan Jawahery, Soeren
Accel-based breakout talks by Ratcliff, Grenier,
Gabareen-Mokhtar, Coleman, Graham
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
  • Final reprocessing of the complete data set will
    make long-term archiving compressed to Apr-Oct
  • Modernization of tape silo system for maintaining
    data set long term delayed into FY09-FY10, due to
    very tight budget in FY08

PEP-II total integrated luminosity 557 fb-1
Slide redacted
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
  • Dismantling and disposal (or re-use) of BABAR and
    PEP-II systems and components
  • Significant draw on physicist and technical

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
  • 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

Scientific computing plenary talk by Gregory
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
  • 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
BABAR manpower budget breakdown for FY08
BABAR budget evolution FY07-FY10
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
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

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
  • Simulation and optimization of the design and
  • 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.

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
  • 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
  • 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

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,
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
ATLAS white paper in preparation
  • Upgrade RD and future upgrade construction
  • SLAC as a west coast center for ATLAS and ATLAS
  • 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
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
  • 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
  • Main areas of research
  • Phenomenolgy and model building Brodsky, Dixon,
    Hewestt, Peskin, Quinn, Rizzo, Wacker, and 7
  • Formal Quantum Field Theory and String Theory
    Kachru, Silverstein, Weinstein, and 1 postdoc

Theory plenary talk by Michael Peskin
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
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
  • 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
  • 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.

Physics case for the SuperB Flavor Factory
  • When evidence for New Physics is found at the
    LHC, attention will turn to understanding the
  • 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
  • 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
  • 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

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
  • 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
  • Would need additional physics leadership and
    would need to expand suitable core engineering

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
  • Planned detector RD effort
  • Move engineering resources from completed EXO-200
    onto development of a system concept for full EXO
  • Concentrate detector RD for linear collider on
    main issues particle-flow calorimetry,
    high-segmentation calorimetry with integrated
  • Develop precision timing systems for Cherenkov
    detector applications, including SuperB

  • 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