Transcript DOE Office of High Energy Physics Program Report Report to the
Department of Energy Office of Science
DOE Office of High Energy Physics Report to the Astronomy and Astrophysics Advisory Committee Program Report
Kathy Turner Office of High Energy Physics, Office of Science Department of Energy Oct. 14 th , 2008
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Department of Energy
DOE Office of Science (SC) Office of High Energy Physics (OHEP)
Office of Science
http://www.science.doe.gov/hep/index.shtml
Mission Statement The mission of the High Energy Physics program is to understand how our universe works at its most fundamental level. We do this by
discovering the most elementary constituents of matter and energy, exploring the basic nature of space and time itself, and probing the interactions
between them. These fundamental ideas are at the heart of physics and hence all of the physical sciences. To enable these discoveries, HEP supports theoretical and experimental research in both elementary particle physics and fundamental accelerator science and technology. HEP underpins and advances the DOE missions and objectives through this research, and by the development of key technologies and trained manpower needed to work at the cutting edge of science.
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The Office of High Energy Physics Program: Science at Three Frontiers
• Energy Frontier: Measurements with colliding Beams
Provides direct access to physics at higher TeV energy regions
Department of Energy Office of Science
• Luminosity (Precision) Frontier: Precise measurements with intense beams & decays
Reveal the properties of neutrinos and indirectly give access to energy regions beyond Terascale
Rare decays access the high mass scales of intermediate states
• Particle Astrophysics (Cosmic) Frontier: Observations of astrophysical phenomena
Obtain information about the early stages of the universe and fundamental particles and forces of nature Need to advance all three frontiers to achieve long term goals of the field.
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Department of Energy
DOE Office of High Energy Physics (OHEP)
Office of Science
Advisory Bodies
The community identifies the scientific opportunities and priorities. OHEP then works to fold this into our program plans.
Provide official guidance (reports) when requested:
HEPAP – High Energy Physics Advisory Panel
•
This is our main advisory body (DOE and NSF) AAAC (NSF, NASA and DOE)
Other scientific bodies (National Academy, OECD GSF, etc.)
•
EPP2010 (2006) and Astro2010 Facility Program Advisory Committees, DOE Reviews, etc.
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Department of Energy
OHEP Funding Trend
U.S. HEP funding has been eroded by inflation : FY 2007/FY 1996 ~ - 16% U.S. HEP has closed Facilities: BNL/AGS (FY 1999): SLAC/B-Factory (FY 2008) HEP FY 2008 funding was a -8.5% reduction from FY 2007 (Partially mitigated by emergency supplement providing $32M to HEP) FY 2008/FY1996 ~ -23%
Office of Science
1000 900 800 700 600 500 400 300 200 100 0 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Fiscal Year
Suppl.
Actual Dollars FY 2008 Dollars (OMB Inflators) 5
FY 2008
Challenging Circumstances
Department of Energy Office of Science
Reductions in FY 2008 funding resulted in lessening of
HEP scientific productivity and workforce
Momentum on planned activities (NOvA, SRF infrastructure, ILC R&D) U.S. credibility as an interagency/international collaborator (BaBar, ILC)
Required a new, realistic strategic plan to deal with
Increased cost and delay in possible start of an ILC
Movement of energy frontier to Europe in FY 2009 Closure of B-Factory and imminent closure of Tevatron
Role of Fermilab in the future
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Guidance from the Community with a Constrained Funding Plan:
Our Main Community Advice comes from the High Energy Physics Advisory Panel (HEPAP) – Reports to DOE and NSF DOE/NSF Charge to HEPAP P5 subpanel (Nov 2007/revised Jan 2008)
• Identify and evaluate the scientific opportunities and options that can be
pursued at different funding levels for mounting a world-class, vigorous and productive national particle physics science program.
• Understand and evaluate the role Fermilab will play in the national and
worldwide context of particle physics over the next two decades.
• Recommendations on the priorities for an optimized high energy physics
program over the next ten years (FY 2009-2018), under the following four funding profile scenarios:
Constant effort at the FY 2008 (Omnibus) funding level Constant effort at the FY 2007 funding level Doubling of funding starting in FY 2007 Additional funding above the previous level, in priority order, associated with specific activities needed to mount a leadership program that addresses the scientific opportunities identified in the National Academy (“EPP2010”) report.
Report was submitted June 2008 http://www.science.doe.gov/hep/files/pdfs/P5_Report%2006022008.pdf
Department of Energy Office of Science
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HEPAP (P5) Report Major Findings
The panel recommends that the US maintain a leadership role in world-wide particle physics. The panel recommends a strong, integrated research program at the three frontiers of the field: the Energy Frontier, the Intensity Frontier and the Cosmic Frontier. Progress in achieving the goals of particle physics requires advancements in all 3 areas
LHC offers an outstanding opportunity for discoveries at the Energy Frontier
An opportunity exists for the U.S. to become a world leader at the Intensity Frontier
Promising opportunities for advancing particle physics identified at Cosmic Frontier
Department of Energy Office of Science
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Department of Energy
P5 Report: Major Recommendations
Office of Science
• Energy Frontier
Continued support for the Tevatron Collider program for next 1-2 years
LHC program has the highest priority, including US involvement in the planned detector and accelerator upgrades
Accelerator and detector R&D program for lepton colliders
• Intensity Frontier
Recommends a world class neutrino program as core component
Long term vision and R&D for a large detector at DUSEL and high-intensity neutrino source at Fermilab.
Program of rare decays (e.g;. muon to electron conversion)
• Cosmic Frontier
Emphasis on dark matter and energy
• JDEM in collaboration with NASA • LSST in collaboration with NSF • direct dark matter search experiments with NSF • HEP at its core is an accelerator based experimental science.
Support accelerator R&D to develop technologies:
• that are needed by the field • that benefit the nation 9
Department of Energy
Overview Budget Considerations
Office of Science
FY 2008 Funding ($721M) was a -4% reduction compared to FY 2007 FY 2009 Budget Request ($805M) is a +$115M over FY 2008 (original $689M; not including the $32M supplement)
• However, a six month Continuing Resolution (CR) has been passed by Congress • There is the possibility of a year-long CR
FY 2010 Budget Request to be submitted by new administration
• DOE is developing plans for programs at different funding levels • OHEP is using HEPAP (P5) findings/recommendations in it plans 10
Department of Energy
FY 2009 & FY 2010
FY 2009 Budget Request ($805M
+$115M over FY 2008 ($689M))
• However, expectation of six month Continuing Resolution (CR) • Tevatron plans to run six months into FY 2009 • LHC program will be supported (but no growth) • Some projects will be delayed • Still plan to proceed with JDEM selection • Continue discussions on participation in LHC Phase I upgrade • APAF project will be delayed • Across program – the higher priority programs are supported • If there’s a year-long CR, the impacts will be significant • RIFs of 175-200 at labs and ~80 (PhDs/students) at universities • Tevatron Operations will be terminated at end of six months • NOvA project cancelled and other projects delayed or canceled • Appropriation is pivotal • Future of HEP Program will depend upon level of FY 2009 Appropriation • HEPAP (P5) Report is viewed as important for determining funding level
FY 2010 Budget Request to be submitted by new administration
• DOE is developing plans for programs at different funding levels • HEP are using HEPAP (P5) findings/recommendations in it plans
Office of Science
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OHEP – Program
Recommendations from P5 Project Status
Department of Energy Office of Science
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HEPAP-P5 Executive Summary: The Energy Frontier
Department of Energy Office of Science
“The panel recommends continuing support for the Tevatron Collider program for the next one to two years, to exploit its potential for discoveries.”
“The panel recommends support for the US LHC program, including US involvement in the planned detector and accelerator upgrades.” (Cited as the highest priority.)
“The panel recommends for the near future a broad accelerator and detector R&D program for lepton colliders that includes continued R&D on ILC at roughly the proposed FY2009 level in support of the international effort. This will allow a significant role for the US in the ILC wherever it is built. The panel also recommends R&D for alternative accelerator technologies, to permit an informed choice when the lepton collider is established.”
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Energy Frontier Tevatron
Running extremely well
2008 Luminosity ~1700 pb -1 Detectors 90-95% efficient Recent Results
~150 abstracts submitted to ICHEP08 Highlights:
• Top mass accurate to 0.7% • All di-boson final states observed • 1
st Higgs exclusion (strong French leadership) Plans
Run in 2009, with no long shutdown Run in 2010, if funds and personnel are available
Department of Energy Office of Science
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CMS
Department of Energy
Energy Frontier LHC and Upgrades
Office of Science
ATLAS
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Officially completed $450M DOE LHC detector and accelerator projects.
Support of US experimentalists and accelerator physicists is program priority.
Significant fraction of the U.S. Experimental HEP community is working on building detectors at the LHC, commissioning the accelerator and preparing software Begun planning for contributions to
Accelerator upgrades
Detector upgrade
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Energy Frontier The ILC
Continue support for a U.S. role in the global ILC R&D effort through 2012 at ~$35M level/yr Contributions to the Global Design Effort common fund Focused on areas where the U.S. has well developed expertise
Damping Rings
Beam Delivery RF technology including modulators and klystrons Will support generic detector studies related to lepton colliders Will also continue to develop SRF technology at $25M/yr with an emphasis on
High gradient Cryomodule development
Department of Energy Office of Science
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HEPAP-P5 Executive Summary: The Intensity Frontier
Department of Energy Office of Science
“The panel recommends a world-class neutrino program as a core component of the US program, with the long-term vision of a large detector in the proposed Deep Underground Science and Engineering Laboratory (DUSEL) and a high intensity neutrino source at Fermilab.”
“The panel recommends an R&D program in the immediate future to design a multi-megawatt proton source at Fermilab and a neutrino beamline to DUSEL and recommends carrying out R&D on the technologies for a large multi-purpose neutrino and proton decay detector.”
“The panel endorses the importance of a deep underground laboratory to particle physics and urges NSF to make this facility a reality as rapidly as possible. Furthermore the panel recommends that DOE and NSF work together to realize the experimental particle physics program at DUSEL.”
“The panel recommends funding for measurements of rare processes to an extent depending on the funding levels available…” (Muon to electron conversion is recommended in all scenarios.)
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The Intensity Frontier: A Program for Neutrino Physics
Department of Energy Office of Science
Goals for the next phases of the experimental program in neutrino oscillations:
The mixing angles The ordering of the neutrino mass states. The extent of CP violation in neutrino mixing.
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A worldwide effort has led to an ambitious program that can do all of this – subject to the values of the unknown parameters.
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Fermilab:
Running: MiniBooNE; Minos
Under construction: Minerva; NOvA
– In planning stages: DUSEL
- accelerator neutrino oscillation - accelerator neutrino oscillation - accelerator neutrino oscillation
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Elsewhere:
Daya Bay Reactor Neutrino Detector (China) – reactor neutrino oscillation
Double Chooz (France) - reactor neutrino oscillation Tokai-to-Kamioka (T2K/Japan) - accelerator neutrino oscillation Enriched Xenon experiment (EXO/U.S.) - double beta decay
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Intensity Frontier: The US-based OHEP Neutrino Program
Department of Energy Office of Science
NSF’s proposed Underground Lab.
DUSEL NOvA (off-axis) MINOS (on-axis) 735 km 1300 km MiniBooNE SciBooNE MINERvA
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HEPAP-P5 Executive Summary: The Cosmic Frontier
Department of Energy Office of Science
“The panel recommends support for the study of dark matter and dark energy as an integral part of the US particle physics program.”
“The panel recommends that DOE support the space-based Joint Dark Energy Mission, in collaboration with NASA, at an appropriate level negotiated with NASA.”
“The panel recommends DOE support for the ground-based Large Synoptic Survey Telescope program in coordination with NSF at a level that depends on the overall program budget.”
“The panel further recommends joint NSF and DOE support for direct dark matter search experiments.”
“The panel recommends limited R&D funding for other particle astrophysics projects and recommends establishing a Particle Astrophysics Science Advisory Group.”
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U.S. has on-going, planned and proposed Particle Astrophysics experiments
Gamma-ray Astrophysics Dark Matter (WIMPs)
COUPP
Dark Energy Ground-based SDSS (BOSS)
Department of Energy Office of Science
Dark Energy Space-based JDEM VERITAS Fermi Launched June 2008 Cosmic Ray Astrophysics
CDMS II
LUX DES (LSST) Pierre Auger Anti-matter, Dark Matter Dark Matter (axions) ADMX AMS
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Recent Activities in Particle Astrophysics and Cosmology
Department of Energy Office of Science
Dark Energy R&D grant program in FY 2007 & FY 2008
FY07: Funded 21/32 grants with $3M
FY08: Funded 22/69 grants with $3.8M
Program is not currently planned for future years
Agreement with NASA for Planck data analysis
September 2007: DOE and NASA signed an agreement for cooperation on Planck for its data analysis needs
DOE will provide the US Planck collaboration with a minimum guaranteed annual allocation of processing hours at its National Energy Research Supercomputing Center (NERSC)
2,000,000 massively parallel processing hours
Both agencies are providing personnel to work at NERSC
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T2 T1
VERITAS
(Very Energetic Radiation Imaging Telescope Array System) T4
Department of Energy Office of Science
Scientific Purpose: Study of celestial sources of very high energy gamma-ray sources & search for dark matter candidates T3 Funding Agencies: NSF, DOE Smithsonian & foreign institutions Instrument: 4-telescope atmospheric Cherenkov array VERITAS Operating at Mt. Hopkins SPECIFICATIONS: Energy threshold ~ 100GeV Angular resolution ~ 4' Collecting area ~ 5 × 10 4 m 2 Future: community is planning the Advanced Gamma-ray Imaging System (AGIS) Status:
Array installed at the Whipple Observatory Basecamp on Mt. Hopkins and started full operations in April 2007
No longer planning to move to Kitt Peak
Approved by the Forest Service to continue operations at Whipple for up to 20 years.
~12 sources detected during the first year of full array operations
Several new Blazar discoveries will sort out the opacity of the Universe to the highest energy photons
Data on key science programs (Dark Matter, Blazars, SNR and the origin of the Cosmic Rays, and Galactic Plane Survey) is being accumulated.
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Department of Energy
GLAST
Fermi Gamma-ray Space Telescope
Office of Science
High-energy (~20 MeV-300 GeV) gamma rays using HEP detector technology
Collaboration on the primary instrument, the Large Area Telescope (LAT), between NASA, DOE, France, Italy, Japan, Sweden
June 10, 2008 - GLAST launched!
Turn on and check out of instruments went amazing smoothly
August 26, 2008 – Announcement of First Light and Renaming to Fermi Gamma-ray Space Telescope First LAT All Sky Map – August 2008
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Department of Energy
Cosmic Ray Astrophysics – Pierre Auger
Pierre Auger Observatory – Argentina
Scientific goal is to observe, understand and characterize the very highest energy cosmic rays.
Collaboration with NSF and 17 other countries Installed over 3000 km 2 site
• •
24 fluorescence telescopes 1600 surface Cherenkov detectors operating as of June 2008
Inaugural Celebration Argentina Nov. 2008 Collaboration is planning an Auger-North in Colorado
Fluorescence telescope Surface detector
Nov. 2007 results: Sources of highest energy cosmic rays are most likely active galactic nuclei !
Office of Science
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Alpha Magnetic Spectrometer (AMS)
Department of Energy Office of Science
• • • • • •
Search for dark matter, missing matter & antimatter on the International Space Station Prototype (AMS-01) took data on STS-91 in 1998 AMS-02 fabrication complete in 2005 Now undergoing integration and testing Scheduled to ship to Kennedy Space Center at the beginning of 2009.
Launch and deployment on ISS not currently scheduled.
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Dark Matter Searches
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Cryogenic Dark Matter Search (CDMS-II)
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Direct detection of WIMPs with ultracold Ge in Soudan Mine
• •
Data-taking: Full operations with 5 towers (~5kg active mass) started in 2006 & continuing in 2008. New results on exclusion limits on the dark matter cross section will be out soon.
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A new proposal for a next generation experiment is expected soon .
Axion Dark Matter Search (ADMX) experiment
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At Lawrence Livermore National Lab Phase I upgrade completed in 2008 – to use SQUID amplifiers
Large Underground Xenon (LUX) dark matter experiment
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Data taking in 2008 – 2009; further upgrades are expected to be proposed soon.
Two phase 100 kg. fiducial liquid-gas Xenon time projection chamber experiment in SUSEL underground lab – search for WIMPs Experiment delayed by pumping out water in Homestake Mine
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Chicagoland Observatory for Underground Particle Physics (COUPP)
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Data taking expected in 2009.
Search for WIMPs at Fermilab
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2 kg refrigerant bubble chamber can be tuned for to produce a single bubble for low energy nuclear recoils; currently being upgraded to 60kg Evaluating other technologies for future as recommended by our Dark Matter Science Assessment Group (DMSAG).
Department of Energy Office of Science
CDMS detector
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Dark Energy
Department of Energy Office of Science
Operating experiments (Stage II):
Supernova Cosmology Project, Nearby Supernova Factory, SDSS-II Under Construction and/or Review (Stage III)
Dark Energy Survey (DES) – under construction
Baryon Oscillation Spectroscopic Survey (BOSS) on SDSS-III – under review
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Received funds for R&D and upgrade in FY 2007 & FY 2008 as part of dark energy grants program. Providing R&D funds for large-scale experiments (Stage IV):
Large Synoptic Survey Telescope (LSST) - ground
Joint Dark Energy Mission (JDEM) - space
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Department of Energy
Sloan Digital Sky Survey (SDSS)
Office of Science
Science - Galaxy surveys, dark matter, dark energy + astronomy - June 2007: 6th public data release Now have data on 9583 square degrees of sky, with 1,271,680 spectra. SDSS-I took data since 1998 through June 2005 SDSS-II took data through June 2008 and doing 3 surveys: Sloan Legacy Survey, SEGUE, and Sloan Supernova Survey Collaboration: ~ 25 institutions around the world Funding: Sloan Foundation, NSF, DOE, Japan, Germany, U.K., + participating institutions Future: Collaboration is planning SDSS-III with a baryon oscillation (BOSS) dark energy study etc
.
Recent Science News: Jan.’07 – discovery of dwarf galaxies orbiting the Milky Way Feb. ’07 – Distant quasars live in massive dark matter halos
2.5 m Telescope in Apache Point, New Mexico 120 mega-pixel camera covers 1.5 square degrees 640 optical fiber spectrograph 29
Dark Energy Survey (DES)
DES is a Stage III experiment that will provide multiple methods to study dark energy
DOE is leading the fabrication of the DECam camera which will be installed on the Blanco 4m telescope in Chile.
Collaboration with NSF, UK, Spain, Brazil
Joint DOE/NSF review held September 2008: The DECam is ready for start of full construction.
Plan: Long-lead procurements beginning in FY 2008; Full construction in FY 2009, operations in FY 2012.
DECam Camera
Department of Energy Office of Science
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Department of Energy
Large Synoptic Survey Telescope (LSST)
Office of Science
Experiment to study dark energy, near earth objects, plus many other astronomical measurements
NSF is the lead agency
DOE’s interest is in dark energy measurements LSST collaboration is proposing that DOE fund the camera construction, led by SLAC. Also contributions from IN2P3 and private sources
DOE has been supporting R&D for the camera through SLAC
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DOE/NASA Joint Dark Energy Mission(JDEM)
Department of Energy Office of Science
DOE, NASA and Office of Science and Technology Policy (OSTP) have been meeting regularly to lay out the plan for a JDEM mission The JDEM website with our plan was made public on September 12, 2008
http://jdem.gsfc.nasa.gov
NASA will be the lead agency, responsible for the overall mission. The JDEM Project Office has been assigned to Goddard Space Flight Center.
JDEM will be a medium-class, strategic mission, with competitively selected PI-led dark energy science investigations. The selected PI’s will not provide the flight hardware.
Both DOE and NASA will develop scientific instrumentation and participate in science operations and data analysis.
NASA will provide the mission-level items: telescope, spacecraft bus, launch.
The agencies will follow their usual means for assigning their agreed-upon work. DOE has appointed LBNL to run the DOE project office.
DOE plans to provide ~ $200M (FY 2008 $) for JDEM.
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Department of Energy
DOE/NASA JDEM Planned Timeline
Office of Science
June 2008 – DOE and NASA established a Science Working Group to continue the work of the Dark Energy Task Force in developing a quantitative measure for evaluating the science performance of a mission (Report October) September 2008 – DOE and NASA are convening a Science Coordination Group (SCG) to establish preliminary science requirements for a JDEM and work with JDEM Project Office to develop a pre-conceptual design meets the mission’s programmatic constraints.
September 12, 2008 – Letter soliciting people to apply to join the SCG released October 2008 – selection of SCG members and first meeting Mid-December 2008 – results delivered to agencies and SCG disbanded End of 2008 - NASA will release an Announcement of Opportunity (AO) written with DOE, soliciting proposals for PI-led dark energy investigations using the JDEM facility. A letter to the community will be released in October and will provide advance information regarding the AO January 2009 – Phase A starts JDEM Project Offices at DOE and NASA will develop a proposed split of the scope of work and present it to the agencies for approval Summer 2009 – Selected investigations announced. The PI’s and their collaborators will work with the JDEM Project Offices at both agencies throughout the development of the mission and will execute the dark energy science investigations after launch and commissioning Launch ~ middle of the next decade
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AAAC and the DOE
Department of Energy
Provides
Guidance from the community on the scientific opportunities at the interface of physics and astronomy and their relative impact (priority) A forum for the community to remain informed on current scientific understanding and status of agency activities A forum for the agencies to remain informed about each other’s activities A mechanism for taskforce studies in of areas of interest.
Office of Science
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Department of Energy
Summary
HEP is in an exciting period – great potential for near term: -- LHC, neutrino experiments, dark energy, dark matter, cosmic rays, gamma rays
Office of Science
We are at a pivot point (as with all the physical sciences research)
• How much support in the country should be towards short-term, mid-term and
longer-term basic research?
• Present Administration since 2007 has strongly supported long-term basic research • FY 2009 Budget Request provides funding towards doubling funding for SC • Continuing Resolution (funding at previous level) for 6 months • President will not submit a FY 2010 Budget Request
HEPAP (P5) has presented a vision for the U.S. program
• Being used in the development of the DOE OHEP strategic plan and Budget Requests 35
Backup
Department of Energy Office of Science
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Department of Energy
HEPAP (P5) Report
Comments
Office of Science
• P5 seriously addressed the charge given by DOE/NSF: • to examine the scientific opportunities and options • for mounting a world class particle physics program • at different funding levels • Grappled with the issue of how to mount a world-class
program that addresses the highest priority scientific opportunities identified with the funding available
• Result is a realistic vision whose priorities are consistent
with the major findings - that is robust and that should produce outcomes that justify the investment
• Lays out what the nation will get with different investments • Scenario B - productive, world-class program at all three frontiers • Scenario A – unable to mount productive, world-class programs at all three frontiers • Scenario C (FY 2007 ACI level) – Scenario B, but faster, cheaper and better!! • Scenario D (additional above C) – the funding to host next Tevascale facility 37
US Neutrino Experiments under Construction
MINERvA
Neutrino scattering experiment using the NuMI beamline at Fermilab; will measure low energy neutrino interactions.
Passed CD3, fabrication is underway Data taking will start in 2009-2010 NOvA
Uses the NuMI Off-Axis beam to search ν μ → ν e oscillations in an 14 kiloton liquid scintillator detector Passed CD2, project is baselined.
Operations with full detector in 2013, partial operations to begin ~1 year earlier.
Department of Energy Office of Science
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DUSEL
Strong recommendation by HEPAP to partner with NSF to develop a experimental particle physics program at DUSEL Working on a Memorandum of Understanding with NSF to establish a Joint Oversight Group Embarking on R&D for a large detector at DUSEL and high intensity neutrino source at Fermilab
Large detector
Measure neutrino oscillations
Search for neutrino CP violation
Search for proton decay Neutrino astronomy Beam line Supporting, with NSF, R&D for
A large water Cherenkov detector A large liquid argon detector Definitely an area to discuss international participation
Department of Energy Office of Science
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Department of Energy
International Experiments
Office of Science
Daya Bay Reactor Neutrino Detector
Neutrino-oscillation experiment designed to measure the mixing angle sin 2 2
13 using reactor anti-neutrinos Partnering with China. Supporting twelve US groups, including a spokesperson.
DOE contributions have passed CD3, $34M DOE contribution.
Full operations in 2011 Double Chooz
Neutrino-oscillation experiment designed to measure the mixing angle sin 2 2
13 using reactor anti-neutrinos
Supporting twelve US groups
Proposal driven, plan to support continued involvement Tokai-to-Kamioka (T2K)
Long baseline neutrino oscillations to search for
n m
using high intensity beam in Japan
n
e appearance
DOE working on 280m detector and other instrumentation Completing R&D, starting fabrication, $2M DOE contribution.
Data taking in 2010
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Department of Energy
Neutrinoless Double Beta Decay
Office of Science
If the neutrino is its own antiparticle, “neutrinoless” double beta decay is allowed, but rare If this is true, measurement of decay rate allows direct measurement of
n
mass Experiments need large mass and low backgrounds. Several different detector technologies proposed.
200 kg enriched Xenon experiment (EXO-200) being assembled at Waste Isolation Pilot Plant (WIPP) in NM
All the cryogenics and other infrastructure is already at WIPP and being commissioned.
The chamber proper is being assembled at Stanford and will go to WIPP in the next few months.
There will be a ribbon-cutting ceremony at WIPP on October 22 EXO-200 moving into WIPP cavern
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The Scientific Opportunities of HEP
The National Academy study, released in 2006
EPP 2010 – DOE High Energy Physics & NSF Elementary Particle Physics Conclusions:
Particle physics plays an essential role in the broader enterprise of the physical sciences. Although setting priorities is essential, it also is critical to maintain a diverse portfolio of activities in particle physics. Accelerators will remain an essential component of the program, since some critical scientific questions cannot be explored in any other manner.
The field of elementary particle physics is entering an era of unprecedented potential.
Department of Energy Office of Science
Chief Recommendation:
The United States should remain globally competitive in elementary particle physics by playing a leading role in the worldwide effort to aggressively study Terascale physics.
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The National Academy EPP2010 study
Department of Energy Office of Science
To implement the committee’s chief recommendation, the Department of Energy and the National Science Foundation should work together to achieve the following objectives in priority order: • Fully exploit the opportunities afforded by the construction of the Large Hadron Collider (LHC) at the European Center for Nuclear Research (CERN).
• Plan and initiate a comprehensive program to become the world-leading center for research and development on the science and technology of a linear collider, and do what is necessary to mount a compelling bid to build the proposed International Linear Collider on U.S. soil.
• Expand the program in particle astrophysics and pursue an internationally coordinated, staged program in neutrino physics.
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