Publication

Developing disruption avoidance functions for the ITER plasma control system

2026

Abstract

Disruption avoidance is a key facet of the overall task to manage tokamak disruptions. This paper defines the disruption avoidance function as being a component of the ITER Plasma Control System (PCS) exception handling. Defining this component of the ITER PCS is essential since its functions require dedicated attention for both design and deployment. This paper aims to bridge the gap between research and development of conceptual functionality and obtaining real-time codes for the ITER PCS that can be confidently deployed during Start of Research Operation (SRO) -the first campaign to be executed on ITER. The paper provides a first breakdown and design status of specific ITER PCS disruption avoidance functions. The current functional breakdown is compared with various research efforts and functions tested on present tokamaks. This allows the identification of open issues and complications. Possible research studies are identified which will be able to strengthen the preparation of the ITER disruption avoidance functions prior to the start first operation.

Official source

https://infoscience.epfl.ch/entities/publication/3bb1e56a-bc55-4832-bf06-fc73a98248e5

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2026

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/3bb1e56a-bc55-4832-bf06-fc73a98248e5

About this result

Related concepts (22)

ITER

ITER (initially the International Thermonuclear Experimental Reactor, iter meaning "the way" or "the path" in Latin) is an international nuclear fusion research and engineering megaproject aimed at creating energy through a fusion process similar to that of the Sun. Upon completion of construction of the main reactor and first plasma, planned for late 2025, it will be the world's largest magnetic confinement plasma physics experiment and the largest experimental tokamak nuclear fusion reactor.

Tokamak

A tokamak (ˈtoʊkəmæk; токамáк) is a device which uses a powerful magnetic field to confine plasma in the shape of a torus. The tokamak is one of several types of magnetic confinement devices being developed to produce controlled thermonuclear fusion power. , it was the leading candidate for a practical fusion reactor. Tokamaks were initially conceptualized in the 1950s by Soviet physicists Igor Tamm and Andrei Sakharov, inspired by a letter by Oleg Lavrentiev. The first working tokamak was attributed to the work of Natan Yavlinsky on the T-1 in 1958.

Magnetic confinement fusion

Magnetic confinement fusion is an approach to generate thermonuclear fusion power that uses magnetic fields to confine fusion fuel in the form of a plasma. Magnetic confinement is one of two major branches of fusion energy research, along with inertial confinement fusion. The magnetic approach began in the 1940s and absorbed the majority of subsequent development. Fusion reactions combine light atomic nuclei such as hydrogen to form heavier ones such as helium, producing energy.

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Developing disruption avoidance functions for the ITER plasma control system

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