Explanipedia

Demonstration of Super-X divertor exhaust control for transient heat load management in compact fusion reactors Open

B. Kool, K. Verhaegh, Gijs Derks, T. Wijkamp, J.T.W. Koenders , et al. · 2025

Nuclear fusion could offer clean, abundant energy. However, managing the power exhausted from the core fusion plasma towards the reactor wall remains a major challenge. This is compounded in emerging compact reactor designs promising more …

A methodology for TIE detection and tracking for JET’s experimental cameras Open

A. González Ganzábal, G.A. Rattá, S. Dormido-Canto, P. Carvalho, S. Silburn , et al. · 2025

Particle fluxes and gross erosion at limiters in JET low-confinement mode plasmas measured with visible cameras Open

E. de la Cal, E.R. Solano, I. Balboa, S. Silburn, E. Pawelec , et al. · 2025

Deuterium (D) and beryllium (Be) fluxes are obtained in JET Low-confinement mode (L-mode) plasmas at the outer limiters of the first wall using calibrated visible cameras. They are inferred from the measured radiances using the spectroscop…

Overview of the third JET deuterium-tritium campaign Open

A. Kappatou, M. Baruzzo, A. Hakola, E. Joffrin, D. Keeling , et al. · 2025

JET returned to deuterium-tritium operations in 2023 (DTE3 campaign), approximately two years after DTE2. DTE3 was designed as an extension of JET’s 2022-2023 deuterium campaigns, which focused on developing scenarios for ITER and DEMO, in…

The quasi-continuous exhaust regime in ASDEX Upgrade and JET Open

M. Faitsch, Michael P. Dunne, E. Lerche, P. Lomas, I. Balboa , et al. · 2025

The quasi-continuous exhaust (QCE) regime is a type-I ELM-free high confinement regime obtained at high plasma shaping and high separatrix density. A comparison with various ELM-free regimes in the literature is presented together with pot…

The quasi-continuous exhaust regime in JET Open

M. Faitsch, M. Dunne, E. Lerche, Peter Lomas, I. Balboa , et al. · 2025

The quasi-continuous exhaust (QCE) regime is a regime that is naturally type-I ELM-free. It combines the high density at the plasma edge needed for power exhaust with the high normalised energy confinement typical for H-mode operation. In …

JET machine operations in T&D-T Open

E. Abdelrahman, Azizah Abdul Hamid, N. Abid, K. Abraham, O. Adabonyan , et al. · 2024

JET, the world’s largest operating tokamak with unique Be/W wall and tritium handling capability, completed a Deuterium-Tritium (D-T) campaign in 2021 (Maggi et al 29th Fusion Energy Conf. ) following a decade of preparatory experiments, d…

Exploring the physics of a high-performance H-mode scenario with small ELMs at low collisionality in JET with Be/W wall Open

E. de la Luna, J. García, M. Sertoli, P. Lomas, S. Mazzi , et al. · 2024

A new H-mode regime at low density and low edge safety factor ( q 95 = 3.2, with = 3 MA) that combines high energy confinement, stationary conditions for density and radiation and small Edge Localized Modes (ELMs) have been found in …

Overview of T and D–T results in JET with ITER-like wall Open

Domenico Abate, N. Abid, P. Abreu, O. Adabonyan, Muhammad Afzal , et al. · 2024

In 2021 JET exploited its unique capabilities to operate with T and D–T fuel with an ITER-like Be/W wall (JET-ILW). This second major JET D–T campaign (DTE2), after DTE1 in 1997, represented the culmination of a series of JET enhancements—…

A control oriented strategy of disruption prediction to avoid the configuration collapse of tokamak reactors Open

A. Murari, Riccardo Rossi, T. Craciunescu, J. Vega, J. Mailloux , et al. · 2024

Overview of the EUROfusion Tokamak Exploitation programme in support of ITER and DEMO Open

E. Joffrin, M. Wischmeier, M. Baruzzo, A. Hakola, A. Kappatou , et al. · 2024

Within the 9th European Framework programme, since 2021 EUROfusion is operating five tokamaks under the auspices of a single Task Force called ‘Tokamak Exploitation’. The goal is to benefit from the complementary capabilities of each machi…

L-H transition studies in tritium and deuterium–tritium campaigns at JET with Be wall and W divertor Open

E.R. Solano, G. Birkenmeier, C. Silva, E. Delabie, J.C. Hillesheim , et al. · 2023

The recent deuterium–tritium campaign in JET-ILW (DTE2) has provided a unique opportunity to study the isotope dependence of the L-H power threshold in an ITER-like wall environment (Be wall and W divertor). Here we present results from de…

Divertor power load investigations with deuterium and tritium in type-I ELMy H-mode plasmas in JET with the ITER-like wall Open

M. Faitsch, I. Balboa, P. Lomas, S. Silburn, A. Tookey , et al. · 2023

Divertor power load is a major challenge towards a burning plasma in a next-step tokamak. Here, the first results of a divertor power load characterisation in tritium plasmas in type-I ELMy H-mode, obtained in the JET deuterium-tritium cam…

Remote infrared view of JET divertor compatible with D-T operations Open

I. Balboa, E. Rose, G.F. Matthews, D. Croft, M. Stamp , et al. · 2023

A remote viewing system located outside the biological shield wall to image the divertor region in JET is presented here. This paper focuses on the optical and mechanical designs of the installation of a line of sight which is capable of i…

Remote wide angle view broad wavelength viewing system compatible with D-T operations in JET Open

I. Balboa, E. Rose, G.F. Matthews, D. Croft, M. Stamp , et al. · 2023

Imaging diagnostics in Joint European Torus have become essential in the study of plasma wall interactions and the protection of the plasma facing components. During deuterium operations, the location of these diagnostics was at close prox…

Enhanced performance in fusion plasmas through turbulence suppression by megaelectronvolt ions Open

S. Mazzi, J. García, D. Zarzoso, Ye. O. Kazakov, J. Ongena , et al. · 2022

Disruption prediction with artificial intelligence techniques in tokamak plasmas Open

J. Vega, A. Murari, S. Dormido-Canto, G.A. Rattá, M. Gelfusa , et al. · 2022

Recent progress in L–H transition studies at JET: tritium, helium, hydrogen and deuterium Open

E.R. Solano, E. Delabie, G. Birkenmeier, C. Silva, J. C. Hillesheim , et al. · 2022

We present an overview of results from a series of L–H transition experiments undertaken at JET since the installation of the ITER-like-wall (JET-ILW), with beryllium wall tiles and a tungsten divertor. Tritium, helium and deuterium plasma…

Overview of JET results for optimising ITER operation Open

J. Mailloux, N. Abid, K. Abraham, P. Abreu, O. Adabonyan , et al. · 2022

The JET 2019–2020 scientific and technological programme exploited the results of years of concerted scientific and engineering work, including the ITER-like wall (ILW: Be wall and W divertor) installed in 2010, improved diagnostic capabil…

Observations with fast visible cameras in high power Deuterium plasma experiments in the JET ITER-like wall tokamak Open

U. Losada, Ana Manzanares, I. Balboa, S. Silburn, J. Karhunen , et al. · 2020

High speed visible imaging allows to visualize the 2-dimensional dynamics of fast phenomena in the boundary layer of fusion plasmas. Here we describe the two high speed visible cameras currently operating in the JET tokamak, enabling the s…

Mixed hydrogen-deuterium plasmas on JET ILW Open

D. King, E. Viezzer, I. Balboa, M. Baruzzo, É. Belonohy , et al. · 2020

A study of mixed hydrogen-deuterium H-mode plasmas has been carried out in JET-ILW to strengthen the physics basis for extrapolations to JET D-T operation and to support the development of strategies for isotope ratio control in future exp…

Impact of divertor configuration on recycling neutral fluxes for ITER-like wall in JET H-mode plasmas Open

E. de la Cal, U. Losada, A. Martín de Aguilera, A. Shaw, E.R. Solano , et al. · 2019

International audience

Demonstration of improvement in 2D tomographic reconstructions of filtered cameras in the JET ITER-like wall divertor due to corrected interpretation of reflections Open

J. Karhunen, M. Carr, J. Harrison, B. Lomanowski, I. Balboa , et al. · 2019

Improved localization of emission and reduction of artefacts have been achieved in tomographic reconstructions of the tangentially viewing spectroscopic divertor cameras in JET by introducing the contribution of reflections from the metall…

Effect of reflections on 2D tomographic reconstructions of filtered cameras and on interpreting spectroscopic measurements in the JET ITER-like wall divertor Open

J. Karhunen, M. Carr, J. Harrison, B. Lomanowski, I. Balboa , et al. · 2019

Considering reflections from metallic wall surfaces in generation of tomographic reconstructions of the tangentially viewing, visible-range spectroscopic divertor cameras in JET has been observed to yield enhanced spatial accuracy and sign…

Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall Open

E. Joffrin, S. Abduallev, M. Abhangi, P. Abreu, В. В. Афанасьев , et al. · 2019

For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des . 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/5…

The software and hardware architecture of the real-time protection of in-vessel components in JET-ILW Open

V. Huber, A. Huber, D. Kinna, G.F. Matthews, G. Sergienko , et al. · 2019

For the first time, the JET operation in deuterium-tritium (D-T) plasma, which is scheduled to take place on JET in 2020, will be performed in the ITER mix of plasma-facing component materials. In view of the preparation of the DT campaign…

JET diagnostic enhancements testing and commissioning in preparation for DT scientific campaigns Open

J. Figueiredo, A. Murari, C. Pérez von Thun, D. Marocco, M. Tardocchi , et al. · 2018

In order to optimize the scientific exploitation of JET (Joint European Torus) during the upcoming deuterium-tritium experiments, a set of diagnostic systems is being enhanced. These upgrades focus mainly on the experimental and operationa…

An improved model for the accurate calculation of parallel heat fluxes at the JET bulk tungsten outer divertor Open

D. Iglesias, P. Bunting, J.W. Coenen, G.F. Matthews, R.A. Pitts , et al. · 2018

Parallel heat flux calculations at the JET divertor have been based on the assumption that \nall incoming heat is due to the projection of the heat flux parallel to the magnetic line, q , \nplus a constant background. This simplification l…

Real-time protection of the JET ITER-like wall based on near infrared imaging diagnostic systems Open

A. Huber, D. Kinna, V. Huber, G. Arnoux, G. Sergienko , et al. · 2018

In JET with ITER-like wall (JET-ILW), the first wall was changed to metallic materials (tungsten and beryllium) [1] which require a reliable protection system to avoid damage of the plasma-facing components (PFCs) due to beryllium melting …

Experimental validation of an analytical kinetic model for edge-localized modes in JET-ITER-like wall Open

C. Guillemaut, C. Metzger, D. Moulton, K. Heinola, M. O’Mullane , et al. · 2018

The design and operation of future fusion devices relying on H-mode plasmas requires reliable modelling of edge-localized modes (ELMs) for precise prediction of divertor target conditions. An extensive experimental validation of simple ana…

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