Accelerometers for fundamental physics and Solar System exploration

In the last decades the role of space-qualified high-sensitivity accelerometers -- devices which measure tiny accelerations acting on spacecraft due to non-gravitational forces -- has increased considerably. Today their use is a first-choice option in all the cases -- as fundamental physics -- where small dynamical effects must be accounted for a good outcome of the mission. In this talk the accelerometers developed by the Experimental Gravitation Group of IAPS-INAF are presented, focusing on their concept, design, performance verification and calibration strategies. Their main applications in fundamental physics tests, as well as in the exploration of the Solar System, are discussed, with an outlook to the near-future.