Future Planning for SLAC
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Transcript of 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?
December 5, 2003 SLAC Scenarios 3
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)
December 5, 2003 SLAC Scenarios 4
Accelerator Physics and Detector DevelopmentThe Ubiquitous Linac
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SLAC Scientific Excellence
December 5, 2003 SLAC Scenarios 5
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
December 5, 2003 SLAC Scenarios 7
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
December 5, 2003 SLAC Scenarios 8
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
December 5, 2003 SLAC Scenarios 9
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
December 5, 2003 SLAC Scenarios 11
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
December 5, 2003 SLAC Scenarios 12
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
December 5, 2003 SLAC Scenarios 14
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
December 5, 2003 SLAC Scenarios 16
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
December 5, 2003 SLAC Scenarios 18
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
December 5, 2003 SLAC Scenarios 19
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
December 5, 2003 SLAC Scenarios 20
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
December 5, 2003 SLAC Scenarios 21
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
December 5, 2003 SLAC Scenarios 22
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
December 5, 2003 SLAC Scenarios 23
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
December 5, 2003 SLAC Scenarios 24
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’
December 5, 2003 SLAC Scenarios 25
Scenarios 1: 5% GrowthScenario 1 - 5% Growth
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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
December 5, 2003 SLAC Scenarios 26
Scenario 2 - 10% Growth
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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
6%/year
December 5, 2003 SLAC Scenarios 27
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