title: The effect of a scanning flat fold mirror on a cosmic microwave background B-mode experiment.
abstract: We investigate the possibility of using a flat-fold beam steering mirror for a cosmic microwave background B-mode experiment. An aluminium flat-fold mirror is found to add ∼0.075% polarization, which varies in a scan synchronous way. Time-domain simulations of a realistic scanning pattern are performed, and the effect on the power-spectrum illustrated, and a possible method of correction applied.
authors: Astronomy Instrumentation Group, Cardiff School of Physics and Astronomy, Cardiff University, Queens Buildings, The Parade, Cardif CF24 3AA, United Kingdom.
authors: William F
authors: WF
authors: Grainger
authors: Chris E
authors: CE
authors: North
authors: Peter A R
authors: PA
authors: Ade