Results 11 to 20 of about 1,116 (155)

Modelling of shattered pellet injection experiments on the ASDEX Upgrade tokamak [PDF]

open access: yesNuclear Fusion
In a shattered pellet injection (SPI) system the penetration and assimilation of the injected material depends on the speed and size distribution of the SPI fragments.
Ansh Patel   +15 more
doaj   +3 more sources

Plasmoid drift and first wall heat deposition during ITER H-mode dual-SPIs in JOREK simulations [PDF]

open access: yesNuclear Fusion
The heat flux mitigation during the thermal quench (TQ) by the shattered pellet injection (SPI) is one of the major elements of disruption mitigation strategy for ITER.
D. Hu   +8 more
doaj   +2 more sources

Dynamics of JET runaway electron beams in -rich shattered pellet injection mitigation experiments [PDF]

open access: yesNuclear Fusion
The publication provide further insights into the dynamics of JET runaway electron (RE) beams mitigated by D2-rich shattered pellet injection (SPI) (Reux et al 2022 Plasma Phys. Control. Fusion 64 034002).
C. Sommariva   +21 more
doaj   +2 more sources

Fragmentation Analysis of Cryogenic Pellets for Disruption Mitigation [PDF]

open access: yes, 2022
The lifetime and utilization of a nuclear fusion reactor like ITER depends strongly on its capabilities to mitigate damage during disruptions. While shattered pellet injection (SPI) was chosen as the baseline mitigation method for ITER, the exact ...
Peherstorfer, Tobias
core   +3 more sources

Overview of the JET results in support to ITER [PDF]

open access: yes, 2017
The 2014–2016 JET results are reviewed in the light of their significance for optimising the ITER research plan for the active and non-active operation. More than 60 h of plasma operation with ITER first wall materials successfully took place since its
Abduallev, S.   +7 more
core   +3 more sources

Shattered pellet injection experiments at JET in support of the ITER disruption mitigation system design [PDF]

open access: yes, 2022
A series of experiments have been executed at JET to assess the efficacy of the newly installed shattered pellet injection (SPI) system in mitigating the effects of disruptions. Issues, important for the ITER disruption mitigation system, such as thermal
A. Aleksa   +1255 more
core   +1 more source

Effect of two-stage shattered pellet injection on tokamak disruptions [PDF]

open access: yes, 2022
An effective disruption mitigation system in a tokamak reactor should limit the exposure of the wall to localized heat losses and to the impact of high current runaway electron beams, and avoid excessive forces on the structure.
F\ufcl\uf6p, T\ufcnde-Maria   +4 more
core   +2 more sources

Overview of the JET preparation for deuterium-tritium operation with the ITER like-wall [PDF]

open access: yes, 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%/50% D–T mixtures ...
Abduallev, Sadrilla   +8 more
core   +2 more sources

Disruption Mitigation in Tokamaks with Massive Material Injection [PDF]

open access: yes, 2023
The sudden loss of confinement of the energy content of fusion plasmas in off-normal events, called disruptions, is among the most severe threats to the future of fusion energy based on the tokamak design.
Vallhagen, Oskar
core  

Lagrangian particle simulation of hydrogen pellets and SPI into runaway electron beam in ITER

open access: yes, 2022
Numerical studies of the ablation of pellets and shattered pellet injection (SPI) fragments into a runaway electron beam in ITER have been performed using a time-dependent pellet ablation code [R. Samulyak at el., Nucl Fusion, 61 (4), 046007 (2021)]. The
Hollmann, Eric   +7 more
core   +1 more source

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