QUEST on DASI: a South Pole CMB polarization experiment

December 2003 • 2003NewAR..47.1083C

Authors • Church, Sarah • Ade, Peter • Bock, James • Bowden, Melanie • Carlstrom, John • Ganga, Ken • Gear, Walter • Hinderks, James • Hu, Wayne • Keating, Brian • Kovac, John • Lange, Andrew • Leitch, Eric • Mallie, Olivier • Melhuish, Simon • Murphy, Anthony • Rusholme, Ben • O'Sullivan, Creidhe • Piccirillo, Lucio • Pryke, Clem • Taylor, Andy • Thompson, Keith

Abstract • QUEST on DASI is a ground-based, high-sensitivity, high-resolution (ℓ _max∼2500) 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.

Links

• ELECTR https://doi.org/10.1016%2Fj.newar.2003.09.033