# The effect of a scanning flat fold mirror on a CMB B-mode experiment

Source: [The effect of a scanning flat fold mirror on a CMB B-mode experiment](<https://www.sota2.com/research/paper/68fa2fc51e209131ce86f829>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T17:48:27.945Z

Authors: William F. Grainger, Chris E. North, Peter A. R. Ade

Published: 2011-05-17T15:09:25.000Z

## Abstract

We investigate the possibility of using a flat-fold beam steering mirror for a CMB B-mode experiment. An aluminium flat-fold mirror is found to add $\\sim$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.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1105.3409>)

[PDF](<https://arxiv.org/pdf/1105.3409.pdf>)