Helical magnetic self-organization of plasmas in toroidal pinches with transport barriers formation Marco Veranda, Daniele Bonfiglio, Susanna Cappello, Luis Chacòn, Dominique Frank Escande and Giovanni di Giannatale EPJ Web Conf., 230 (2020) 00013 Published online: 11 March 2020 DOI: 10.1051/epjconf/202023000013