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BICEP: B ackground I maging of C osmic E xtragalactic P olarization

BICEP: B ackground I maging of C osmic E xtragalactic P olarization. Jamie Bock Hien Nguyen Caltech/JPL. Andrew Lange Brian Keating Ki Won Yoon Eric Hivon Cynthia Chiang. Bill Holzapfel Yuki Takihashi U.C. Berkeley. Peter Ade U. Cardiff. “The Muscle Behind Curls”.

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BICEP: B ackground I maging of C osmic E xtragalactic P olarization

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  1. BICEP:Background Imaging of Cosmic Extragalactic Polarization Jamie Bock Hien Nguyen Caltech/JPL Andrew Lange Brian Keating Ki Won Yoon Eric Hivon Cynthia Chiang Bill Holzapfel Yuki Takihashi U.C. Berkeley Peter Ade U. Cardiff “The Muscle Behind Curls” http://www.astro.caltech.edu/~lgg/bicep_front.htm

  2. The Challenge of CMB Polarimetry QUEST BICEP • What do we need? • Significant advance system sensitivity • Control systematic errors at < 0.1 mK levels • Distinguish CMB from Galactic Foregrounds • Distinguish Gravity-wave Signal from Lensing

  3. A uniquely powerful probe for curl modes – key to understanding the physics of inflation ~100 times faster mapping speed than current experiments (e.g. BOOMERANG) 8” aperture refractor Minimal Systematics Technological Precursor for NASA “Beyond Einstein” Mission CMBPOL 2003-2020 http://universe.gsfc.nasa.gov/roadmap.html BICEP

  4. ~20 cm primary aperture Refractive wide-field optics ~20 FOV 0.7 (150 GHz) and 1.0 (100 GHz) resolutions 48 feeds / 96 polarization-sensitive bolometers at 250 mK South Pole site: great atmosphere, low foregrounds & conducive to deep integrations The first pair of PSBs Instrument

  5. BICEP is a large Cryostat. • Refracting optics cooled to 4K • Uses both LN2 and LHe with a four day hold time. Detectors cooled to 250 mK

  6. BICEP will be housed in the renovated Penthouse of the Dark Sector Lab

  7. BICEP is an Experiment- Not a Facility • BICEP will deploy in December 2004 • BICEP will need to observe for three • seasons in order to reach its scientific • goals. • At the end of this time, the telescope will be removed.

  8. Major Support Requirements Facilities: Modification of DSL penthouse for BICEP mount Temporary Summer Laboratory Space Cryogenics: Liquid Nitrogen 20 liters/day, Liquid Helium 17 liters/day Power: ~15 KW Data Transmission: ~2GB/day

  9. Critical Schedule Dates Laboratory Space: becomes available 11/22/04 DSL Modifications: complete 12/4/04 Mount installation: 12/7/04 Receiver installation: 12/22/04 Telescope Operations Begin: 1/14/05 Condition occupancy of DSL was not scheduled until 1/1/05. This presented a significant challenge to this “success oriented” schedule. – as of today, problem solved

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