Some effects of ion cyclotron resonance heating on the Joint European Torus boundary plasma

Abstract

Detailed boundary plasma measurements are reported for a special series of ion cyclotron resonance heating (ICRH) discharges in the Joint European Torus (JET) in which Z eff remained constant over a range of powers. This behavior is examined using a relatively simple model of particle and energy balance using the measured parameters of the scrape‐off layer. Carbon influx measurements from the limiter are compared with those calculated from the model.