@inproceedings{83856f4c020745038dda2b984423c240,
title = "Equilibrium features of bean-shaped spherical tokamak plasmas with an ergodic limiter",
abstract = "Equilibrium simulations of spherical tokamak bean-shaped plasmas in natural divertor geometry with an Ohmic regime are presented for the first time. Preliminary results in a non-self-consistent scenario suggest higher (factor up to 2) beta values can be attained for these plasmas compared to the more usual spherical tokamak natural divertor D-shaped geometry. This can be attained simultaneously (but independently) with setting an edge localised ergodization as observed via a Poincar{\'e} mapping, using a low level of perturbation to the plasma current (∼2 percent). In combination with the closer proximity of the bean-shaped plasmas to the in-vessel limiters (also observed here) this leads to a higher beta limit which extrapolates favorably for a more compact reactor based in the spherical tokamak concept which is thus more economical and has a more even thermal power load.",
keywords = "Bean-shaped plasmas, Beta limit, Equilibrium reconstruction, Ergodic limiter, Poincar{\'e} Mapping, Second-stability, Spherical Tokamaks, Tokamaks",
author = "C. Ribeiro and Vargas, \{V. I.\} and Herrera, \{J. J.E.\} and E. Chavez",
year = "2013",
doi = "10.1109/SOFE.2013.6635429",
language = "Ingl{\'e}s",
isbn = "9781479901715",
series = "2013 IEEE 25th Symposium on Fusion Engineering, SOFE 2013",
booktitle = "2013 IEEE 25th Symposium on Fusion Engineering, SOFE 2013",
note = "2013 IEEE 25th Symposium on Fusion Engineering, SOFE 2013 ; Conference date: 10-06-2013 Through 14-06-2013",
}