SLUO LHC Workshop: Closing RemarksPage 1 SLUO LHC Workshop: Closing Remarks David MacFarlane...

SLUO LHC Workshop: Closing Remarks


David MacFarlane

Associate Laboratory Directory for PPA


Outline

• Why are meetings like this workshop important to SLAC and the US community?– Context, plans and possible areas of evolution for SLAC/ATLAS

program and connections to US ambitions at the LHC

• Where should we go next?– Another important step along a path of creating a new paradigm for

SLAC and the US-LHC community


SLAC Particle Physics & Astrophysics

Accelerator-based particle physics:

ATLAS & BABAR

ATLAS upgrade

Astrophysics & Cosmology:

Fermi GST, DES

Non-accelerator physics:EXO-200, CDMS

GeODM

SiD, SuperB

CMB, AGISEXO

LSST, JDEM

Linear Collider,Project-X

Accelerator research:LHC, ILC, high-gradient, plasma-wakefield, laser

LHC upgrades


Physics Opportunities

Accelerator research:ILC, high-gradient,

plasma-wakefield, laser

Astrophysics & Cosmology:

Fermi GST, DES

Accelerator-based particle physics:

ATLAS & BABAR

Non-accelerator physics:EXO-200, CDMS

Direct dark matter searches

Energy & intensity frontiers

Inflation, cosmic rays

Higgs, SUSY, discovery physics

Nature of the neutrino

Dark matter & dark energy

Future energy frontier facilities

Discovery reach


Reminder: why did SLAC 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

• ATLAS is the future for our accelerator-based program, and therefore the glue tying together the HEP program at SLAC

• The energy frontier is the highest priority program for the national user community & our traditional user base– This meeting is another important step is translating this idea into

concrete terms and areas of engagement


Ongoing challenges and opportunities

• Late entry (2006) 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 size and role for SLAC/ATLAS effort has been challenging– Our goal is to significantly strengthen the US ATLAS effort by the

infusion of a large and experienced SLAC team• Next decade will see operation & physics exploitation of ATLAS, as well

as a very ambitious and challenging upgrade effort

– Need to build on a common vision by US ATLAS community, US ATLAS management, SLAC and OHEP of the SLAC role


Present elements of SLAC/LHC plan

LHC:LARP collimators, PS2 design, other opportunities

ATLAS:Theme 1: Pixel System

Theme 2: DAQ and trigger

Theme 3: Simulations

Theme 4: Tier 2 Center & potential Western Data Analysis Facility [future]

Theme 5: The Bay Area as an ATLAS physics center [future]


Pixel System

Development & critical service roles

Stage 1: new inner layer

Stage 2: full system upgradeUpgrade R&D

What is the overall long-term SLAC/ATLAS plan?

Trigger/DAQ System

Development & critical service roles

Stage 1: new architecture & incremental upgrades

Stage 2: full system upgradeUpgrade R&D

Physics engagement, computing and regional center growth

SLAC a major partner in ATLAS, broadly supporting

US ATLAS community

06 08 10 12 14 16 18


Exploring ideas for an Analysis Facility

• Future direction for ATLAS Tier 2 & 3 implementation may need to evolve after first data– Tier 2s may struggle to meet combined needs of simulation and

data-intensive analysis, alignment, calibration & HLT validation– Hosting Tier 3 centers at SLAC may be an attractive option, both in

terms of maintaining efficient operation and sharing CPU resources

• Option exists for a Western Data Analysis Facility at SLAC– Migration from BABAR dominated to ATLAS dominated computing

hardware operation, within site power and cooling capabilities– Need to understand economies of sharing support personnel, CPU

and disk hardware across Tier 2 and Tier 3 needs – Need to integrate into US ATLAS and ATLAS planning for Tier 2 & 3

planning and initial experience with data


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

• This is just a vision at the moment! – Would need to create a consensus in the US ATLAS community

about a new paradigm for exploiting physics at the LHC


Regional Center

What are possible elements of a regional center?

Upgrade R&D and construction

Remote monitoring & operations

Strong Theory Group

Significant computing resources & expertise

Meeting rooms & user space

Detector systems& operations expertise

Physics tools expertise

Similar to DESY Analysis Center, but with some important advantages


Where should we go next?

• Opportunity to define together a new paradigm for SLAC’s role as a national lab in support of the LHC as the highest priority element of the national program– Significantly enlarged SLAC/ATLAS program could provide an

additional strong anchor on the west coast at a time when operations, physics and major upgrade needs are all converging

– SLAC’s role should be driven by the real needs of the US community

– Will only happen if the US community and SLAC speak to OHEP with one voice about a coherent vision for our role

• Need to turn ideas, e.g., enhanced computing role, regional center, upgrade R&D and future upgrade roles, benefits of laboratory infrastructure, into a common vision and a concrete implementation

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