future planning for slac

Future Planning for SLAC

Persis S. Drell

December 5, 2003 SLAC Scenarios 2

Scenarios Study 2003: Process Started early in 2003 Inclusive of SLAC faculty, staff and users. Final Report early 2004 Context

There will be a linear collider built and SLAC will be a major participant

PEP-II/BaBar program has a clear future to 2010 Growth in particle astrophysics with initiation of KIPAC Future of SSRL to 2015 and beyond determined by SPEAR3 and

LCLS Charge

Develop models for SLAC’s role in a future linear collider Explore other exciting science opportunities for laboratory in

LC/LCLS era What will the lab look like a decade from now?


Process: surveyed the major themes in HEP and Particle Astrophysics & Cosmology

B day: 1036 (or 2 x 1035?) e+e- B factory Neutrino day: accelerator/reactor/solar oscillations, LHC day: accelerator & detector projects for luminosity

upgrade Z/Higgs day: @ 30 GeV; e+e- -> Z (10M -> 3G Z/yr); e+e- -

> ZH Two beam day: -> Higgs “shop”; 2 beam e+e- -> Z or ZH;

CLIC R&D; plasma afterburner for ZH Cosmology day: Dark matter/energy via SNAP, LSST, Clusters Additional Seminars with discussion:

An International Linear Collider and What it Might Mean for SLAC (Dave Burke)

Colloquium on ITER, including management (Rob Goldston) Colloquium on ALMA, including management (Robert Brown)


Accelerator Physics and Detector DevelopmentThe Ubiquitous Linac

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SLAC Scientific Excellence


Pillars of the SLAC Program The High Energy Frontier Flavor Physics Science with Synchrotron Light Particle Astrophysics and Cosmology

Criteria for Program Development Cutting edge science opportunites Opportunities to engage users Scope of SLAC’s contributions must be

commensurate with SLAC’s role as a national lab Assumption

Linear Collider exits somewhere in the world

The High Energy Frontier


Models for SLAC Participation in LC Linear Collider the highest priority for high energy

program at the laboratory SLAC continues to champion x-band RF technology

choice and strongly supports a US site for the facility. SLAC is committed to the LC, independent of location

and independent of technology Scenarios committee studied

what are the component pieces of that commitment how does the laboratory’s on-site effort change

depending on downstream decisions: technology choice location

Conclusion: The scope of SLAC’s effort supporting LC largely independent LC location and technology


Model of SLAC LC Participation Model exercise led to conclusion that a reasonable target for

SLAC responsibility ~10% of the TPC Conclusion site and technology independent Details of the involvement do depend on site and technology On-shore: US contribution 60% of TPC

40% of TPC to Project office SLAC responsible for ~10% of TPC

Off-shore: US contribution 25% of TPC 5% of TPC to Project office SLAC responsible for ~10% of TPC

SLAC & FNAL have major US portions SLAC would like to have major responsibility for one of the two

detectors 50% contribution to 350 M$ detector 50 physicists and main engineering group at SLAC Some prototyping and possibly responsibility for major assemblies SLAC should strive to be collaboration host


Models for SLAC Participation in LHC Upgrades LHC is the high energy frontier Complements involvement with LC Opportunity for small but significant

involvement Machine opportunities in this phase include:

RF upgrades to shorten bunch lengths RF crab cavities to increase crossing angle

Major detector challenge is inner tracker Concern could divert resources from

traditional role in electron-based accelerators linear collider

Flavor Physics


Future B-Physics Program A 2 x 1035 (~$200M) or 1036 (~$500M) B factory:

Quark flavor mixing sensitive to new physics LHC can directly discover new physics of EWSB

determine its mass scale B factory would supply unique and complementary

flavor and CP information Example: SUSY

LHC: measures flavor-diagonal squark masses B-factory: sensitive to flavor-off-diagonal squark mass and

CP-violating phases If there is new physics in the quark flavor sector, such a

machine should be built. Complements LHC This is the major variable between scenarios. Requires accelerator R&D at luminosity frontier


Future Neutrino Program Neutrinoless double beta decay ()

Mass potentially related to unification scale Majorana mass may have implications for baryon

asymmetry of the universe Based on EXO technology if R&D successful

Consider other options if EXO finds showstopper Participation of the SLAC community in long

baseline neutrino oscillation experiments was considered. However, many others are working on this problem and there was not a clear SLAC role

Science with Synchrotron Light


Science with Synchrotron Light Did not extensively review Opportunities aggressively developed over past 5 years

SPEAR3 LCLS

Enabling broad spectrum of science Materials Science Structural Biology Environmental Science Fempto-chemistry Nanoscale Dynamics .....

Path forward well determined Includes doubling of SSRL staff by 2010

Plateau 2010 onward Continued Accelerator R&D Important

Particle Astrophysics and Cosmology


Particle Astrophysics and Cosmology KIPAC Area of growth

Expect doubling of current effort Did not want to interfere with birth of Institute

Model on: GLAST ISOC Involvement with JDEM, LSST

Future major projects? Identified level of effort

150-200 technical personnel by 2010

Scenarios


Pillars of the Program High Energy Frontier

Participation in LC Participation in LHC upgrades High Gradient Accelerator R&D

Science with Synchrotron Light SPEAR III LCLS Accelerator R&D aimed at machines past LCLS.V1

Flavor Physics me Future B-factory program High Luminosity Accelerator R&D

Particle Astrophysics and Cosmology GLAST ISOC Scaled to example of LSST, JDEM participation


Scenarios: Details Scenario 1:

LC Anywhere no B-factory upgrade past 3x1034

Advanced accelerator R&D doubling in 10 years Scenario 2

LC Anywhere 2x1035 B-factory at SLAC Advanced accelerator R&D grows by 50% in 10 years

Scenario 3 LC on shore 1036 B-factory at KEK Full Linac capability preserved Advanced accelerator R&D doubling in 10 years

Scenario 4 LC off shore 1036 B-factory at SLAC Advanced accelerator R&D grows by 50% in 10 years


Conclusions of Scenarios Study Committee enthusiastic about rich program of science

in all scenarios Scope of the linear collider effort at SLAC independent

of LC location and technology SLAC committed to warm x-band and US site

Committee recommends SLAC consider participating in LHC luminosity upgrades

Level of advanced accelerator R&D should grow Greatest variable in scenarios is the future of the B-

factory program Future SSRL program has well defined growth path Particle astrophysics should at least double SLAC Linac will continue to be an essential part of the

program


Since Scenarios.... ITRTP SLAC ILC R&D aligning to cold

decision Decision not to pursue Super-B at SLAC FY06 budget

B-factory turns off 2008 at latest Beginning of transfer of responsibility for LINAC

to BES BES commits to support LINAC in LCLS era KIPAC vision developed with focus on dark

energy/dark matter JDEM & LSST focus of R&D effort


Major Budget Drivers Going Forward BES commitment to support the linac potentially frees

$96M for HEP to redirect to new initiatives Early transfer of responsibility from HEP to BES is

helpful to HEP since can take advantage of these resources in advance of the B-factory turn off

We will compete within the HEP for those resources to support and grow ILC R&D at SLAC

An additional ~$20M (people and M&S) is available with the ramp down of BaBar ($37M ramps to $15.5 in FY13) Since much of this is in people, we have tried to craft

a program that uses those talents for smaller initiatives that provide science to the community in the ‘gap’ between B-factory turn off and ILC turn on


Elements of Proposed Mid-Term Particle and Astro-Particle Program Non-Accelerator Based

Neutrinoless double beta decay Our technical approach: EXO

Ground based dark energy telescope Our technical approach: LSST

Space based dark energy probe Our technical approach: Join SNAP Collab.

Accelerator Based ILC/ILC detector

Details from Raubenheimer/Jaros Accelerator Research SABER

Continued broad program New accelerator based initiative**

Revisit recommendations of scenarios study


Program Scenarios Built ‘bottom up’ scenarios with program

growth based on planned technological development Included ramp down of BaBar effort Included hoped for ramp up of ILC effort

Included distribution of technical resources, physicists and M&S These are ‘scenarios’ not ‘plans’


Scenarios 1: 5% GrowthScenario 1 - 5% Growth

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20

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FY06 FY07 FY08 FY09 FY10 FY11

NonAccelerator Programs Glast Ops TheoryAccel R&D ILC/D BaBar Ops/Phy R&DILC/D New Funding BES Funding For Accel R&D

FLAT FLAT


Scenario 2 - 10% Growth

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20

40

60

80

100

120

140

160

FY06 FY07 FY08 FY09 FY10 FY11

NonAccelerator Programs Glast Ops TheoryAccel R&D ILC/D BaBar Ops/Phy R&DILC/D New Funding BES Funding For Accel R&D

6%/year


Programmatic Priorities For the near term:

We must focus on B-factory performance and delivery of science to our largest user community

For the mid term: We must continue in our leadership role for the ILC

Highest priority new facility for the world community We must complete GLAST construction and develop the

ISOC Challenges here due to marriage of 2 cultures

We must work to provide additional opportunities for science to the HEP user community in ~2012 e.g. LSST, EXO, JDEM, ....

For the long term: The R&D in accelerator science is our hope for the future of

the field To make the next accelerator *after* the ILC technically

feasible and affordable

future planning for slac

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