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Putting B-Pol in perspective

Putting B-Pol in perspective. Lucio Piccirillo For the B-Pol collaboration Rome, 29 March 2007. The 3 US proposed missions. EPIC – JPL BICEP  SPIDER EPIC – UW MBI-4  MBI-16 CMBPOL – GSFC ???  PAPPA. Experimental Probe of Inflationary Cosmology (EPIC). Jamie Bock JPL / Caltech.

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Putting B-Pol in perspective

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  1. Putting B-Pol in perspective Lucio Piccirillo For the B-Pol collaboration Rome, 29 March 2007

  2. The 3 US proposed missions • EPIC – JPL • BICEP  SPIDER • EPIC – UW • MBI-4  MBI-16 • CMBPOL – GSFC • ???  PAPPA

  3. Experimental Probe of Inflationary Cosmology (EPIC) Jamie Bock JPL / Caltech UC Irvine Alex Amblard Asantha Cooray Manoj Kaplinghat U Minnesota Shaul Hanany Tomotake Matsumura Michael Milligan NIST Kent Irwin UC San Diego Brian Keating Tom Renbarger Stanford Sarah Church Swales Aerospace Dustin Crumb TC Technology Terry Cafferty USC Aluizio Prata The EPIC Consortium JPL Peter Day Clive Dickenson Darren Dowell Mark Dragovan Todd Gaier Krzysztof Gorski Warren Holmes Jeff Jewell Bob Kinsey Charles Lawrence Rick LeDuc Erik Leitch Steven Levin Mark Lysek Sara MacLellan Hien Nguyen Ron Ross Celeste Satter Mike Seiffert Hemali Vyas Brett Williams Caltech/IPAC Charles Beichman Sunil Golwala Marc Kamionkowski Andrew Lange Tim Pearson Anthony Readhead Jonas Zmuidzinas UC Berkeley/LBNL Adrian Lee Carl Heiles Bill Holzapfel Paul Richards Helmut Spieler Huan Tran Martin White Cardiff Walter Gear Carnegie Mellon Jeff Peterson U Chicago John Carlstrom Clem Pryke U Colorado Jason Glenn UC Davis Lloyd Knox Dartmouth Robert Caldwell Fermilab Scott Dodelson IAP Ken Ganga Eric Hivon IAS Jean-Loup Puget Nicolas Ponthieu

  4. US Activities and Opportunities • NASA funded 3 mission studies for the Einstein “Inflation Probe” in 2003 • Envisioned as $350-$500M mission, launch 2010 & every 3 years • Since 2003 there have been some programmatic changes at NASA… • Oral reports were given at NASA HQ this month • Written reports are still being drafted • Task Force For CMB Research (Weiss Committee) in 2005 • Programmatic and technical roadmap to a 2018 launch for US agencies • Two mission options described • Sets mission guidelines: r = 0.01 is science goal • NRC panel to recommend first Beyond Einstein mission to NASA • First Beyond Einstein mission funding is to turn on 2008-9 • CMBPOL, Con-X, LISA, JDEM (aka SNAP), and Black Hole Finder • Recommendation based on “scientific merit and technical readiness” • NRC also to recommend areas for technology funding for next 4 BE missions • Three CMBPOL study teams will organize a single presentation to NRC • MIDEX call expected in October 2007 • Expected cap $220 - $260M including launch vehicle and 30 % cost reserve • Launch 2013 - 2015 • International participation in MIDEX’s limited in the past (~30 %) • Unknown if NASA would change the rules for this AO... probablyunlikely

  5. EPIC Low Cost Mission Architecture Liquid Helium Cryostat (450 ℓ) 30/40 GHz 60 GHz 2 x 90 GHz 135 GHz 200/300 GHz Deployed Sunshield Six 30 cm Telescopes Commercial Spacecraft Solar Panels Absorbing Forebaffle 40 K Half-Wave Plate 2 K Refracting Optics 100 mK Focal Plane Array 100 K 155 K 295 K 8 m 3-Stage V-Groove Radiator Delta 2925H 3-m Toroidal-Beam Antenna

  6. Sensitivity with Existing Detector Arrays EPIC Projected Bands and Sensitivities Absorbing Baffle (40 K) Half-Wave Plate (2 K) *Design Sensitivity †Goal Sensitivity 30 cm Aperture Stop (2 K) Note modest detector improvement over Planck due to relaxed time constant specification & 2 K optics Polyethylene Lenses (2 K) Planck Projected Sensitivities Telecentric Focus Focal Plane Bolometer Array (100 mK)

  7. B-POL precursors? • European ground-based B-modes experiments: CLOVER, BRAIN, ??? • Ground-based, low-frequency coordinated plan of foregrounds: ???  novelty… • European Balloon-borne technology/science flight ??? (EPIC  BICEP/SPIDER, EPIC2  MBI-4 and MBI-16, CMBPOL  PAPPA)

  8. EPIC-JPL (30  300 GHz) r ≥ 0.01 Imaging array TES (100s), lenses, antenna coupled LHe + ADR EPIC-UW r ≥ 0.01 Bolometric interferometer TES(100s), horns LHe + ADR CMBPOL-GSFC (?? GHz) r ≥ 0.001? Imaging array Pop-up arrays (1000s) (?) ??? B-POL r ≥ 0.005(1) ? Imaging array TES (100 < n < 10,000) Lens vs mirror Antenna coupled vs horns LHe cryostat + DIL or ADR Comparison

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