Transport and confinement physics Chapter 2 of the special issue: on the path to tokamak burning plasma operation

Yoshida, M.*; McDermott, R. M.*; Angioni, C.*; Camenen, Y.*; Citrin, J.*; Jakubowski, M.*; Hughes, J. W.*; Idomura, Yasuhiro   ; Mantica, P.*; Mariani, A.*; Mordijck, S.*; Paul, E. J.*; Tara, T.*; Verdoolaege, G.*; Zocco, A.*; Casson, F. J.*; Dif-Pradalier, G.*; Duval, B.*; Grierson, B. A.*; Kaye, S. M.*; Manas, P.*; Malsov, M.*; Odstrcil, T.*; Rice, J. E.*; Schmitz, L.*; Sciortino, F.*; Solano, E.*; Steabler, G.*; Valovi, M.*; Wolfrum, E.*; Snipes, J. A.*; ITPA Transport and Confinement Group*

Progress in physics understanding and theoretical model development of plasma transport and confinement in the ITPA Transport and Confinement Topical Group since the publication of the ITER Physics Basis was summarized focusing on the contributions to ITER and burning plasma prediction and control. This paper provides a general and streamlined overview on the advances that were mainly led by the ITPA TC joint experiments and joint activities for the last 15 years. This paper starts with the scientific strategy and scope of the ITPA TC Topical group and overall picture of the major progress, followed by the progress of each research field: particle transport, impurity transport, ion and electron thermal turbulent transport, momentum transport, impact of 3D magnetic fields on transport, confinement mode transitions, global confinement, and reduced transport modeling.