The fusion research result in Macrotor has been focused on the basic issues of impurity generation (O, C), the role of the radial electric field in particle and energy transport, magnetic turbulence, particle pumping with a limiter, and the development of a large-area ICRF coupler for phased arrays for current drive and plasma heating. The total impurity line radiation has been reduced below the value contributed by the hydrogen edge radiation in ohmically heated plasmas. In RF-heated discharges, edge electron heating and the corresponding influx of impurities have been reduced by k-parallel shaping using large-area phased ICRF couplers. The Faraday shields have been used as limiters, and are used to remove the plasma heat. Current drive due to the lower hybrid fast wave has been observed with these couplers.