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Durham University

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Publication details for Prof Ray Sharples

Kirk, A., Adamek, J., Akers, R., Allan, S., Appel, L., Arese Lucini, F., Barnes, M., Barrett, T., Ben Ayed, N., Boeglin, W., Bradley, J., Browning, P., Brunner, J., Cahyna, P., Carr, M., Casson, F., Cecconello, M., Challis, C., Chapman, I., Chapman, S., Conroy, S., Conway, N., Cooper, W., Cox, M., Crocker, N., Crowley, B., Cardnell, S., Chorley, J., Cunningham, G., Danilov, A., Darrow, D., Dendy, R., Dickinson, D., Dorland, W., Dudson, B., Easy, L., Elmore, S., Evans, M., Farley, T., Fedorczak, N., Field, A., Fitzgerald, I., Fox, M., Freethy, S., Garzotti, L., Ghim, Y., Gi, K., Gorelenkova, M., Gracias, W., Gurl, C., Guttenfelder, W., Ham, C., Harting, D., Havlickova, E., Hawkes, N., Hender, T., Henderson, S., Hillesheim, J., Hnat, B., Horacek, J., Howard, J., Howell, D., Dunai, D., Fishpool, G., Gibson, K., Harrison, J., Highcock, E., Huang, B., Inomoto, M., Imazawa, R., Jones, O., Kadowaki, K., Kaye, S., Keeling, D., Kocan, M., Kogan, L., Komm, M., Lai, W., Leddy, J., Leggate, H., Imada, K., Klimek, I., Hollocombe, J., Lipschultz, B., Lisgo, S., Liu, Y., Lloyd, B., Lomanowski, B., Lukin, V., Maddison, G., Madsen, J., Mailloux, J., Martin, R., McArdle, G., Lupelli, I., McClements, K., McMillan, B., Meakins, A., Meyer, H., Michael, C., Militello, F., Milnes, J., Motojima, G., Muir, D., Naylor, G., Nielsen, A., O'Brien, M., O'Mullane, M., Olsen, J., Omotani, J., Ono, Y., Pamela, S., Morris, A., O'Gorman, T., Pangione, L., Parra, F., Patel, A., Peebles, W., Perez, R., Pinches, S., Piron, L., Price, M., Reinke, M., Ricci, P., Riva, F., Roach, C., Romanelli, M., Ryan, D., Saarelma, S., Saveliev, A., Scannell, R., Schekochihin, A., Sharapov, S., Sharples, R., Shevchenko, V., Shinohara, K., Silburn, S., Simpson, J., Stanier, A., Storrs, J., Summers, H., Takase, Y., Tamain, P., Tanabe, H., Tanaka, H., Tani, K., Taylor, D., Thomas, D., Thomas-Davies, N., Thornton, A., Turnyanskiy, M., Valovic, M., Vann, R., Van Wyk, F., Walkden, N., Watanabe, T., Wilson, H., Wischmeier, M., Yamada, T., Young, J., Zoletnik, S., the MAST Team & the EUROfusion MST1 Team (2017). Overview of recent physics results from MAST. Nuclear Fusion 57(10): 102007.

Author(s) from Durham


New results from MAST are presented that focus on validating models in order to
extrapolate to future devices. Measurements during start-up experiments have shown how
the bulk ion temperature rise scales with the square of the reconnecting field. During the
current ramp up models are not able to correctly predict the current diffusion. Experiments
have been performed looking at edge and core turbulence. At the edge detailed studies have
revealed how filament characteristic are responsible for determining the near and far SOL
density profiles. In the core the intrinsic rotation and electron scale turbulence have been
measured. The role that the fast ion gradient has on redistributing fast ions through fishbone
modes has led to a redesign of the neutral beam injector on MAST Upgrade. In H-mode the
turbulence at the pedestal top has been shown to be consistent with being due to electron
temperature gradient modes. A reconnection process appears to occur during ELMs and the
number of filaments released determines the power profile at the divertor. Resonant
magnetic perturbations can mitigate ELMs provided the edge peeling response is
maximised and the core kink response minimised. The mitigation of intrinsic error fields
with toroidal mode number n>1 has been shown to be important for plasma performance.