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DTSTART;TZID=America/Los_Angeles:20151119T160000
DTEND;TZID=America/Los_Angeles:20151119T170000
DTSTAMP:20260528T223424
CREATED:20151105T092142Z
LAST-MODIFIED:20151105T092142Z
UID:159-1447948800-1447952400@rpm.physics.lbl.gov
SUMMARY:Sara Simon (Princeton) "The Atacama B-Mode Search: Cosmic Microwave Background Polarimetry at 17\,000 Feet"
DESCRIPTION:Abstract:\nThe Atacama B-mode Search (ABS) was a crossed-Dragone telescope located at an elevation of 5200 m in the Atacama Desert in Chile that observed the cosmic microwave background (CMB) from February 2012 until October 2014. ABS searched for the primordial B-mode polarization signal at large angular scales from multipole moments of l~40 to l~500\, where it is expected to peak. The ABS focal plane consisted of 240 pixels sensitive to 145 GHz\, each containing two transition-edge sensor bolometers coupled to orthogonal polarizations. Cold optics and a warm\, rapidly rotating half-wave plate made the ABS instrument unique. I will discuss the ABS instrument and its contributions to the field of CMB cosmology.
URL:https://rpm.physics.lbl.gov/event/s-simon-princeton-the-atacama-b-mode-search-cosmic-microwave-background-polarimetry-at-17000-feet/
LOCATION:Zoom Talk\, 50A-5132\, Berkeley\, ca\, 94720
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