EFDA-JET-CP(14)03/17
Gas Puff Modulation Experiments in JET L- and H-mode Plasmas
JET experiments utilising gas puff modulation technique have been carried out in both L- and H-mode plasmas to study plasma fuelling through the pedestal as well as particle sources and transport. The H-mode experiment is the first exploration of this technique on JET H-mode conditions and focuses on verifying the potential of this technique. The modulation technique, equations and the H-mode experiment (ITER like wall) are described first while the L-mode collisionality scan results (Carbon wall) are given at the end.