Wednesday 16 Feb. 2011 Speaker: Michael Doser (CERN) Title: "AEGIS: a new experiment to measure the gravitational interaction of antihydrogen". Abstract: Experimental studies of Antihydrogen have a short history, but an ambitious future: a first generation of experiments which produced large numbers of antihydrogen atoms for the first time in 2002 has given place to a second wave of experiments which have just now managed to trap and are attempting the next steps of measuring and cooling antihydrogen atoms, with the long term goal of carrying out precision laser spectroscopy comparisons of the spectra of hydrogen and antihydrogen, and thus perform a precision test of the CPT symmetry. In parallel, advances in other fields have made possible the concept of a beam of antihydrogen atoms, which opens the door to measuring the gravitational interaction of (neutral) antimatter. The AEGIS experiment, which in a first step aims to reach a 1% precision on the gravitational interaction of antihydrogen by measuring its free fall over its parabolic trajectory, will be presented, and the technologies from a variety of fields on which it relies will be discussed. As the size and complexity of high energy particle physics experiments grows so do their demands for acquiring, processing and storing data. This task is traditionally split into stages with the front end detector, readout and off detector “real-time” processing followed by storage and offline analysis.