Top Quark Physics at a Future $e^+e^-$ Collider: Experimental Aspects

An overview of top physics and phenomenology at a high-energy linear collider is presented. A comprehensive study of top quark physics is possible at such a facility. The unique threshold production of top pairs would provide measurements of fundamental properties, such as mass and total decay width, to unmatched precision. Above threshold, the full set of Standard Model and anomalous electroweak top couplings can be readily measured with excellent precision. It should also be possible to measure the top Yukawa coupling. This set of measurements would allow a definitive test of the widely held notion that the top quark may play a special role in physics beyond the Standard Model.