Mixed Hydrogen-Deuterium plasmas on JET ILW: H-mode confinement and isotope mixture control

摘要

Previous results on fusion experiments have shown that plasma properties such as confinement and ELM frequency depend on the isotopic mass [1]. However, the behaviour of mixed isotope plasmas is less understood, particularly in JET-ITER Like Wall (JET-ILW). A study of hydrogen-deuterium (H-D) H-mode plasmas in JET-ILW strengthens the physics basis for extrapolations to JET deuterium-tritium (D-T) operation, supports the development of strategies for isotope ratio control for the future D-T campaign and provides stringent tests for plasma transport models. Beyond JET the fuelling behaviour of mixed isotope plasmas and the behaviour of hydrogen majority plasmas is relevant for ITER.