Welcome to the IWAA 2012

International Workshops on Accelerator Alignment (IWAA) are nominally held every two years at particle accelerator laboratories around the world. They are devoted to large scale and high precision positioning of particle accelerators and photon science experiments, focusing on the exchange of information between geodesists, surveyors, physicists and others specialists. The fields of geodesy, geomatics, metrology and traditional surveying overlap in this unique gathering.