Center For Particle Astrophysics Retreat

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Center For Particle Astrophysics Retreat

• Scott Dodelson

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Welcome Dark Matter Hunters
Dan BauerSteve BricePeter Cooper Mike
CrislerFritz DeJonghJeter Hall Erik
RambergAndrew SonnenscheinJong-Hee Yoo
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Welcome Optical Astronomers
Sahar AllamJim AnnisLiz Buckley-GeerTom
DiehlDavid FinleyBrenna FlaugherSteve Kent
Rich Kron Jeffrey KuboNickolai
KuropatkineHuan Lin John Marriner Wyatt
MerrittEric H. Neilsen, Jr.John PeoplesJason
SteffenChris Stoughton Douglas TuckerBrian
Yanny
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Welcome Cosmic Ray Physicists
Pasquale Blasi Paul LebrunPeter Mazur
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Welcome Targets of Opportunity
Greg BockDave ChristianRoger DixonSteve
GeerDave McGinnisHogan Nguyen Vadim Rusu
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Welcome non-Fermi-ites
Steve Meyer, University of Chicago Jeff Peterson,
Carnegie Mellon University
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Welcome Theorists
Scott DodelsonJosh FriemanNick GnedinDan
Hooper Robyn Levine Emiliano SefusattiHee-Jong
Seo Pasquale SerpicoAlbert StebbinsChris Vale
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From the FRA Proposal
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Goals of the Retreat

• Long Term Goal Prepare for future projects
  ? Educate ourselves about science ?
  Understand how/what FNAL can contribute
  ? Initiate collaborations ? Understand time
  pressures/other efforts/competition

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Goals of the Retreat

• Short Term GoalFCPA-2010 Projects and
  Possibilities ? White Paper on each potential
  project ? Overview summarizing mission ?
  Directorate is funding this retreat they are
  anxious to see our output excellent
  opportunity ? Important input for incoming
  Director ? Need volunteers to take notes ?
  Interested parties contribute to white papers

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Our Mission Fundamental Physics

• Do you agree?
• What about origin of cosmic rays, formation of
  cosmic structures?
• If these are in, why not others?
• How strictly must a project fit within mission
  definition?

• Dark Energy
• Dark Matter
• Neutrino Mass
• Seeds of Primordial Structure

These are the most compelling discoveries to date
of Physics Beyond the Standard Model
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We should ask

• Is the science interesting?
• Is the science consistent with our mission?
• Can the science be funded by DOE?
• Will it leverage FNALs resources?
• Who among us will participate?
• What are the time pressures?

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Ultra High Energy Cosmic Rays Beyond Auger South

• Mystery of highest energy cosmic rays
• Recently discovered GZK cut-off
• Recently discovered correlation with matter
• FNAL heavily involved w/ Auger South

Challenge Connection to Fundamental Physics
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Gravity Waves

• New Window in the Universe
• Future mission might detect primordial gravity
  waves
• Test strong gravity

• Challenges
• Connection to Fundamental Physics
• FNALs role
• DOE support?

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Computational Cosmology

• Need to extract information from upcoming
  surveys
• Local expertise/interest
• Could grow to national program
• Recent example, useful for understanding process

• Challenges
• How do we grow to national program?

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21 cm

• Potentially strong science case dark energy,
  reionization, primordial spectrum
• Opportunity the field is young
• Synergy with ILC cavities?

• Challenges
• Connection to Fundamental Physics reionization?
• FNALs role
• Who will lead/participate?
• Politics of Square Kilometer Array?
• DOE support?

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CMB Polarization

• Science Inflation, Neutrino mass
• FNAL responsible for Science
• Transition Edge Sensors used in Cryogenic Dark
  Matter Search (CDMS)
• Silicon Detector facility
• DOE pledged support in Physics of the Universe
• Strong program at UChicago

• Challenges
• Who will lead/participate?
• What will we do?
• Time pressure Stage 3 currently set people
  jockeying for stage 4 Decadel Survey

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Atmospheric Cerenkov Telescopes

• Dark Matter indirect detection
• Interesting ancillary science
• Strong group at UC
• AGIS very interested in our participation
• Jeter Halls DELTA

• Challenges
• Who?
• Backgrounds a big problem
• AGIS may not be optimized for Dark matter
• Time pressure AGIS wants to make a case before
  Decadel
• Will DOE support? Large project, needs to be
  considered by P5

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Optical Cosmology

• Great success _at_ FNAL Sloan Digital Sky Survey,
  Dark Energy Survey, and SuperNova Acceleration
  Probe
• Strong fundamental science case dark energy,
  neutrinos, dark matter, inflation
• DOE funds

• Challenges
• How much can we do?
• Time pressure After Sloan 2, LSST closing out
• Will SNAP be chosen?

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Near Infrared
FNAL member of PRIME, near-infrared satellite
mission which was not selected. Natural
extension of SDSS, pre-DES Should there be a new
small (mid) explorer mission like this? Other
opportunities?
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Direct Dark Matter Detection

• Big success _at_ FNAL CDMS Coupp
• Strong fundamental science case dark matter
• DOE funds
• DMSAG, agencies very positive on science time
  is ripe complementarity with LHC

• Challenges
• Can we do more?
• Will CDMS, Coupp go to the 1 ton level?
• 2009 is important year (DMSAG)
• If we do pursue (argon, xenon), who will
  lead/participate?
• Time pressure to join noble liquid efforts (may
  have missed chance to join LUX300)

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The best of times

• Cosmological model which fits the data
• but contains mysterious components
• presumably related to fundamental physics
• which can be probed by just-right-size
  experiments
• on which we are uniquely situated to play
  leadership roles

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Process