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QUaD is a bolometer-based polarimeter optimized for CMB polarization measurements. The QUaD experiment comprises three main elements: the telescope, the mount and the receiver. The telescope was built by collaborators at the University of Cardiff, in Wales and the University of Chicago. The mount is located at the South Pole and was formerly occupied by the University of Chicago DASI experiment. The receiver was designed, built and tested here at Stanford, using detectors provided by the Jet Propulsion Laboratory.