Particle Physics and Astrophysics Program at SLAC. David B. MacFarlane Associate Laboratory Directory for PPA SLUO AGM on Nov 10, 2011

Transcription

1 Particle Physics and Astrophysics Program at SLAC David B. MacFarlane Associate Laboratory Directory for PPA SLUO AGM on Nov 10, 2011

2 Particle Physics & Astrophysics at a glance Accelerator research: LHC, ILC, high-gradient, plasma-wakefield, laser Particle Physics Theory Accelerator-based particle physics: ATLAS & BABAR Underground physics: EXO-200, CDMS Particle Astrophysics & Cosmology Theory Astrophysics & Cosmology: Fermi GST, DES, LSST, CTA FY11: 176 FTE total 30%:50%:20% accelerator-based, non-accelerator based, & theory 2

3 Beam Direction Beam at IP! FACET & Plasma Wakefield Acceleration research 3

4 Pursuing Frontiers of Scientific Discovery Discovery at the energy frontier þ Searching for physics beyond the Standard Model with ATLAS Discovery at cosmology frontier þ Nature of dark energy with DES and LSST þ Discovery of dark matter with CDMS, Fermi GST, CTA þ Nature of inflation with CMB R&D Discovery at intensity frontier þ Nature of the neutrino with EXO þ Origins of matter-antimatter asymmetry in quark sector 4

5 Energy Frontier focus: ATLAS Energy Frontier Pixel System Trigger/DAQ CSC readout Upgrade R&D Jet/MET/b-tagging Physics ATLAS Data: FY11: 18 FTEs ATLAS Upgrade Project: Data: Particle Theory FY11: 24 FTEs Detector R&D FY11: 11 FTEs [Likely] funded Good funding prospects Unknown funding prospects 5

6 Energy Frontier focus: ATLAS Energy Frontier Lepton-Collider: ILC, CLIC, MUC Detector concepts Simulation toolkits Benchmark physics Detector R&D ATLAS Data: FY11: 18 FTEs LCD R&D: until 2012 FY11: 3 FTEs ATLAS Upgrade Project: Data: Linear Collider Project: Unknown Data: Unknown [Likely] funded Good funding prospects Unknown funding prospects 6

7 Cosmic Frontier focus: Fermi, LSST & CDMS Fermi GST Data: Cosmic Particles + Indirect Dark Matter Fermi Physics + ISOC FY11: 41.5 FTEs O&E cosmology KIPAC Theory CTA Project: Data: FY11: 7 FTEs FY11: 12 FTEs [Likely] funded Good funding prospects Unknown funding prospects 7

8 Cosmic Frontier focus: Fermi, LSST & CDMS Cosmic Particles + Indirect Dark Matter Fermi GST Data: Fermi Physics + ISOC FY11: 41.5 FTEs CTA Project: Data: [Likely] funded Good funding prospects Unknown funding prospects 8

9 Cosmic Frontier focus: Fermi, LSST & CDMS Cosmic Particles + Indirect Dark Matter Fermi GST Data: Fermi Physics + ISOC FY11: 41.5 FTEs CTA Project: Data: [Likely] funded Good funding prospects Unknown funding prospects 9

10 Cosmic Frontier focus: Fermi, LSST & CDMS Cosmic Particles + Indirect Dark Matter Fermi GST Data: Fermi Physics + ISOC FY11: 41.5 FTEs CTA Project: Data: Direct Dark Matter R&D focus: Developing more cost effective production techniques CDMS:100 kg Project: Data: FY11: 7.3 FTEs 100 mm housing and charge collection detector GeoDM:1 tonne Project: Data: Modified photolithographic equipment [Likely] funded Good funding prospects Unknown funding prospects 10

11 Cosmic Frontier focus: Fermi, LSST & CDMS Cosmic Particles + Indirect Dark Matter Fermi GST Data: Fermi Physics + ISOC FY11: 41.5 FTEs Direct Dark Matter Dark Energy CDMS:100 kg Project: Data: FY11: 7.3 FTEs DES Data: DES + LSST FY11: FTEs CTA Project: Data: GeoDM:1 tonne Project: Data: LSST Project: Data: [Likely] funded Good funding prospects Unknown funding prospects 11

12 LSST: continuing progress to obtain funding Provide a sensitive survey of the entire sky at visible wavelengths every few nights Tight constraints on cosmic expansion history, and thus on the nature of Dark Energy Highest priority for groundbased project in ASTRO2010 NSF and DOE-HEP moving forward to develop project NSF: Successful PDR review Aug 29-Sep 2 DOE: CD-1 review Nov 1-3 CD-0 approved June 20 12

13 Revisiting Intensity Frontier focus Nature of neutrino Quark Flavor EXO-200 Data: FY11: 12 FTEs BABAR Project: Data: FY11: 19 FTEs EXO Project: Data: SuperB Project: Data: Uncertain future Heavy Photon Search FY11: 4 FTEs Particle Theory FY11: 24 FTEs Detector R&D FY11: 11 FTEs [Likely] funded Good funding prospects Unknown funding prospects 13

14 PPA Faculty & Staff retreat: Sep Overall path for intensity frontier discussed with PPA-AC at its June 1-2 meeting Context: FY2012 budget shrinks HEP program by 12.4% Re-examine options for future intensity frontier physics Continue existing or develop new lines of research Considered Super Flavor Factories, rare kaon decays, mu-to-e conversion, future of EXO, long-baseline neutrino experiment, and heavy photon search experiment Position SLAC to participate fully in the upcoming Intensity Frontier Workshop OHEP organized in Washington DC on November 30-December 2 JoAnne Hewett (SLAC) and Harry Weerts (Argonne) co-organizers 14

15 Questions for retreat 1. Is continued pursuit of SLAC participation in the SuperB project a viable option? 2. Is SuperKEKB/Belle II a viable alternative future for the quark flavor program? 3. Are there elements of the Fermilab intensity frontier program that would be attractive alternative options? 4. Should we grow participation in LBNE as a national priority? 5. Is tonne-scale EXO a viable and competitive long-term direction for the neutrinoless double-beta decay program? 6. Should we encourage the growth of new ideas for smaller projects such as HPS? 7. Are there completely new ideas we can add to the intensity frontier program? 15

16 New focus: Long-Baseline Neutrino Experiment Direction: Expand our Intensity Frontier horizons þ A centerpiece of the national program þ Could significantly advance our understanding of neutrinos þ Crucial to Fermilab s future þ Offers growth potential ý Physics case not yet fully established ý Why yet another lab on LBNE? ý Potentially major international competition Task force established to explore possible participation Relevant core capabilities exist but leadership is key issue SLAC joining LBNE welcomed by OHEP and Fermilab Would be seeking new funding and project roles 16

17 1300 k m 17

18 Choosing from two LBNE detector options Science collaboration recommendation by end of CY2011 Cherenkov light systems, trigger and DAQ options attractive for SLAC if water Cherenkov option chosen 18

19 Second focus: neutrinoless double beta decay Direction: develop tonne-scale EXO concept þ Fundamentally important physics question þ Recent 2nbb measurement with EXO-200 þ EXO-200 experience combined with R&D program could define path forward þ Unique US entry to 0nbb ý Need established reputation with ONP as steward for 0nbb physics ý Would need to renew SLAC leadership See a development path forward towards decision on tonne-scale project over next 2-3 years T1 / 2 = ( 2.11± 0.04 ± 0.21) 10 yr Slowest SM process directly measured [arxiv: ] 21 19

20 Quark flavor physics status Direction: Keeping SuperB option open þ Physics case remains compelling þ Very small effort but impact amplified by equipment transfer þ Recent positive steps to define project in Italy þ Potentially significant interest in US university community ý Will still take at least a year to define project and still could fail ý Will only be a small part of the SLAC and national program at best Bridge support for a year with focus on equipment transfer Support US community in developing a proposal in 2012 Would only move forward if SuperB project develops a credible management team and project execution plan Requires new funding in tight budget situation 20

21 Intensity Frontier focus: EXO and LBNE Nature of neutrino Quark Flavor Neutrino oscillations and CP violation EXO-200 Data: FY11: 12 FTEs BABAR Project: Data: FY11: 19 FTEs EXO Project: Data: SuperB Project: Data: FY12: 4 FTEs on non-core funding LBNE Project: Data: FY12: 4-5 FTEs on new funding [Likely] funded Good funding prospects Unknown funding prospects 21

22 Summary: PPA Program Energy and Cosmic Frontier Good prospects and vibrant future for rich program Further refinement at upcoming PPA retreat Intensity Frontier Fully engaged in national program discussion, with strong participation in upcoming Intensity Frontier Workshop Extending future portfolio to develop participation in LBNE and a renewed push for tonnescale EXO 22