Author(s): H. Cu-Castillo, A. Bañón Navarro, G. Merlo, F. Reimold, T. Romba, O. Ford, S. Bannmann, L. Vanó, M. Wappl, J. Geiger, A. Goodman, A. Zocco, F. Jenko, and W7-X Team Gyrokinetic simulations of a turbulence-reduced Wendelstein 7-X discharge—characterized by a steep density gradient, moderate temperature gradients, and low plasma beta—show that microtearing mode (MTM) turbulence dominates transport. The simulated heat and particle fluxes agree with experimental me… [Phys. Rev. Lett. 137, 035102] Published Tue Jul 14, 2026