Fusion materials development at Forschungszentrum Jülich

JW Coenen - Advanced Engineering Materials, 2020 - Wiley Online Library
Material issues pose a significant challenge for the design of future fusion reactors. From a
historic point of view, the material mix used for the first wall of a fusion reactor has …

ELM-induced transient tungsten melting in the JET divertor

JW Coenen, G Arnoux, B Bazylev, GF Matthews… - Nuclear …, 2015 - iopscience.iop.org
The original goals of the JET ITER-like wall included the study of the impact of an all W
divertor on plasma operation (Coenen et al 2013 Nucl. Fusion 53 073043) and fuel retention …

ELM induced tungsten melting and its impact on tokamak operation

JW Coenen, G Arnoux, B Bazylev, GF Matthews… - Journal of Nuclear …, 2015 - Elsevier
In JET-ILW dedicated melt exposures were performed using a sequence of 3MA/2.9 T H-
Mode JET pulses with an input power of P IN= 23 MW, a stored energy of∼ 6 MJ and …

Real-time control of divertor detachment in H-mode with impurity seeding using Langmuir probe feedback in JET-ITER-like wall

C Guillemaut, M Lennholm, J Harrison… - Plasma physics and …, 2017 - iopscience.iop.org
Burning plasmas with 500 MW of fusion power on ITER will rely on partially detached
divertor operation to keep target heat loads at manageable levels. Such divertor regimes will …

[HTML][HTML] Result and discussion on the evolution of in-situ leading edge-induced melting on W divertor targets in EAST

Y Lei, D Zhu, C Li, B Gao, B Wang, R Ding… - Nuclear Materials and …, 2021 - Elsevier
The application of ITER-like W/Cu plasma facing components in current tokamaks is of
special concern by ITER. In 2014, ASIPP successfully upgraded upper divertor of EAST to a …

Contrasting H-mode behaviour with deuterium fuelling and nitrogen seeding in the all-carbon and metallic versions of JET

GP Maddison, C Giroud, B Alper, G Arnoux… - Nuclear …, 2014 - iopscience.iop.org
The former all-carbon wall on JET has been replaced with beryllium in the main torus and
tungsten in the divertor to mimic the surface materials envisaged for ITER. Comparisons are …

Transient induced tungsten melting at the Joint European Torus (JET)

JW Coenen, GF Matthews, K Krieger, D Iglesias… - Physica …, 2017 - iopscience.iop.org
Melting is one of the major risks associated with tungsten (W) plasma-facing components
(PFCs) in tokamaks like JET or ITER. These components are designed such that leading …

Numerical evaluation of heat flux and surface temperature on a misaligned JET divertor W lamella during ELMs

R Dejarnac, A Podolnik, M Komm, G Arnoux… - Nuclear …, 2014 - iopscience.iop.org
A series of experiments has been performed on JET to investigate the dynamics of transient
melting due to edge localized modes (ELMs). The experiment employs a deliberately …

Power handling of the JET ITER-like wall

G Arnoux, I Balboa, M Clever, S Devaux… - Physica …, 2014 - iopscience.iop.org
The ITER-like wall (ILW) at JET provides a unique opportunity to study the combination of
material (beryllium and tungsten) that will be used for the plasma facing components (PFCs) …

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

D Iglesias, P Bunting, JW Coenen, GF Matthews… - Nuclear …, 2018 - iopscience.iop.org
Parallel heat flux calculations at the JET divertor have been based on the assumption that all
incoming heat is due to the projection of the heat flux parallel to the magnetic line,, plus a …