Stereo Information in Micromegas Detectors

The New Small Wheel of the ATLAS experiment layout foresees eight micromegas detection layers. Some of them will feature stereo strips designed to measure both the precision and the second coordinate. In this note we describe the principle of reconstructing a space point using stereo information obtained from two micromegas detector layers rotated by a known angle. Furthermore, an error analysis is carried out to correlate the precision and the second coordinate resolution with the corresponding rotated micromegas layers resolution. We analyze and examine two different cases in order to find the optimum layout for the muon spectrometer needs.