Showing 1 - 2 of 2 UKAEA Paper Results
2023
UKAEA-CCFE-PR(23)163
N.Osborne K.Verhaegh M.D.Bowden T.Wijkamp N.Lonigro P.Ryan E.Pawelec B.Lipschultz V.Soukhanovskii T.Biggelaar
High resolution D2 Fulcher band spectroscopy was used in the MAST-U divertors during Super-X and elongated conventional divertor density ramps with D2 fuelling from the mid-plane high-field side. In the Super-X case (density ramp from Greenwald fraction 0.12 to 0.24), the upper divertor showed ground state rotational tempe…
Preprint2023
UKAEA-CCFE-PR(23)132
K. Verhaegh B. Lipschultz J.R. Harrison F. Federici D. Moulton N. Lonigro M. O'Mullane N. Osborne P. Ryan T. Wijkamp B. Kool C. Theiler A. Thornton
First quantitative analysis of the detachment processes in the MAST Upgrade Super-X divertor show an unprecedented impact of plasma-molecular interactions involving molecular ions, resulting in strong ion sinks, leading to a reduction of ion target flux. This starts to occur as the ionisation source detaches from the target, leading to a build-up o…
Preprint