This book provides a comprehensive review and explores future research avenues on negative triangularity tokamak plasmas, a promising candidate for future fusion reactors. Unlike traditional configurations, these plasmas offer significant advantages in power exhaust control, making them a compelling alternative for sustainable energy solutions. Initially considered a speculative endeavor, recent breakthroughs have positioned negative triangularity as a viable solution, capturing the attention of the international fusion community.

Key concepts explored include the historical development of negative triangularity, theoretical predictions, and experimental results on magneto-hydrodynamic stability and turbulent transport. The book delves into the confined and unconfined plasma regions, offering insights into the challenges and opportunities presented by this innovative configuration. With contributions from leading experts, this volume provides a thorough understanding of the potential of negative triangularity in future reactors.

Aimed at plasma scientists, from young researchers to seasoned professionals, this book serves as an essential resource for anyone interested in the cutting-edge developments in fusion energy. Whether you're a student entering the field or a researcher seeking the latest insights, this book offers a detailed and accessible exploration of a concept that could redefine the future of energy production.

Stefano Coda leads the tokamak group and the area of tokamak core physics at EPFL-SPC and is responsible for the operation and scientific program of the TCV tokamak. He is a Senior Scientist at EPFL, where he has supervised 26 postdoctoral fellows and graduate students. He received his PhD in physics from the Massachusetts Institute of Technology in 1997. He is the recipient of the 1997 Award of the American Physical Society for Outstanding Doctoral Thesis in Plasma Physics and a co-recipient of the 2012 R&D 100 Award for the Snowflake Power Divertor. He has been Deputy Task Force Leader of the European Medium-Size Tokamak Task Force from 2014 to 2018. He has authored or coauthored over 600 peer-reviewed articles. His research has focused on the physics of magnetically-confined plasmas of thermonuclear interest, with emphasis on turbulence and transport, electron-cyclotron heating and current drive, suprathermal-electron dynamics, advanced-tokamak and fully non-inductive operation, internal transport barriers, negative-triangularity scenarios, and plasma shaping and control. He has also developed several tokamak diagnostics in support of those research activities.

Alessandro Marinoni is Assistant Professor at the University of California San Diego. He received his M.Sc. in Nuclear Engineering from the Polytechnic of Milan (Milan, Italy) and his Ph.D. in Physics from the Ecole Polytechnique Fédérale de Lausanne (EPFL, Switzerland). He is the recipient of the 2011 IBM Research Award for computational research. Before joining UCSD, he worked on Generation IV fast spectrum reactors at the Paul Scherrer Institute in Switzerland and on magnetic confinement fusion at the Massachusetts Institute of Technology as staff scientist. His research focuses on magnetically confined plasmas, especially on plasma turbulence and transport, current drive, as well as developing innovative diagnostic systems.

Olivier Sauter is a Senior Scientist at the Ecole Polytechnique Federale de Lausanne, Switzelrand, where he has supervised 15 graduate students. He received his PhD in physics from EPFL in 1992. He is the recipient of the 2013 John Dawson award for excellence in plasma physics research and nominated since 2016 as ITER scientist Fellow in the area of integrated modeling. He has been Task Force Leader of the JET MHD-TF in 1999-2001, leader for the simulation activities for the TCV tokamak and for the SPC contribution to the EU Task Force on integrated modeling, as well as Eurofusion experiments research topic coordinator on AUG, JET, MAST, TCV and WEST, presently co-leading WPTE-RT-02. He has authored or coauthored over 500 peer-reviewed articles. His research has focused on the physics of magnetically-confined plasmas of thermonuclear interest, with emphasis on MHD stability, turbulence and transport, electron-cyclotron heating and current drive. He has also provided key contributions to several codes used in the fusion community, such as CHEASE, CAXE, KINX, RAPTORS among others.