Realistic three dimensional simulation on the performance of micromegas

The recently developed Garfield+neBEM combination has been used here to simulate the performance of the micromegas detectors with realistic dimensions. The variation of the electric field due to a change in the cross-section of the mesh opening and other physical dimensions of the detector has been investigated in details. Other three dimensional effects such as the effects of proximity of hole edge, or the end of the detector itself, have been studied. Finally, we have compared our estimations with other available numerical and experimental results.