Top quark mass measurements at and above threshold at CLIC

We present a study of the expected precision of the top quark mass determination, measured at a linear e+ e- collider based on CLIC technology. GEANT4-based detector simulation and full event reconstruction including realistic physics and beam-induced background levels are used. Two different techniques to measure the top mass are studied: The direct reconstruction of the invariant mass of the top quark decay products and the measurement of the mass together with the strong coupling constant in a threshold scan. For both techniques, total uncertainties of around 100 MeV or better are achieved, including a first study of expected systematic uncertainties. For the threshold scan, the precision at ILC is also studied to provide a comparison of the two linear collider technologies.