COMPASS is a high-energy physics experiment at the Super Proton Synchrotron (SPS) at CERN in Geneva, Switzerland. The purpose of this experiment is the study of hadron structure and hadron spectroscopy with high intensity muon and hadron beams.The proposed new measurements comprise a Generalised Parton Distributions programme, an unpolarised PDF and FF programme, a transverse momentum dependent PDF programme and a programme for tests of chiral perturbation theory.
In a series of different experiments both polarized and unpolarized beams and targets will be used. Described COMPASS Phase II Programme has been approved for the realization at CERN starting from the year 2012.