QUEST on DASI: a South Pole CMB polarization experiment |
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| Authors: | Sarah Church, Peter Ade, James Bock, Melanie Bowden, John Carlstrom, Ken Ganga, Walter Gear, James Hinderks, Wayne Hu, Brian Keating, John Kovac, Andrew Lange, Eric Leitch, Olivier Mallie, Simon Melhuish, Anthony Murphy, Ben Rusholme, Creidhe O&#x Sullivan, Lucio Piccirillo, Clem Pryke, Andy Taylor,Keith Thompson |
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| Affiliation: | Sarah Church, Peter Ade, James Bock, Melanie Bowden, John Carlstrom, Ken Ganga, Walter Gear, James Hinderks, Wayne Hu, Brian Keating, John Kovac, Andrew Lange, Eric Leitch, Olivier Mallie, Simon Melhuish, Anthony Murphy, Ben Rusholme, Creidhe O’Sullivan, Lucio Piccirillo, Clem Pryke, Andy Taylor,Keith Thompson |
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| Abstract: | QUEST on DASI is a ground-based, high-sensitivity, high-resolution (ℓmax2500) experiment designed to map CMB polarization at 100 and 150 GHz and to measure the power spectra from E-modes, B-modes from lensing of the CMB, and B-modes from primordial gravitational waves. The experiment comprises a 2.6 m Cassegrain optical system, equipped with an array of 62 polarization-sensitive bolometers (PSBs), located at the South Pole. The instrument is designed to minimize systematic effects; features include differencing of pairs of orthogonal PSBs within a single feed, a rotatable achromatic waveplate, and axisymmetric rotatable optics. In addition the South Pole location allows both repeatable and highly controlled observations. QUEST on DASI will commence operation in early 2005. |
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