Predictive and interpretative modelling of ASDEX-upgrade liquid metal divertor experiment

Čečrdle, J.; Scholte, J.G.A.; Horáček, J.; Morgan, T.W.; Krieger, K.; Greuner, H.; Böswirth, B.; Manhard, A.; Tskhakaya, D. D.; Faitsch, M.

doi:10.1016/j.fusengdes.2023.113886

Cited by 6 publications

(1 citation statement)

References 27 publications

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“…To interpret these experiments, a new simulation model dubbed HeatLMD [77] was developed, combining treatments of LM PFC, 3D heat conduction, sputtering, evaporation and vapour shielding of the incident plasma. HeatLMD was used to interpret recent LM experiments at AUG [78] and was also utilised to predict the behaviour of the LM divertor on the COMPASS Upgrade tokamak, including scenarios with extremely high-power density in the attached divertor q ⊥ ∼ 100 MW m −2 [79]. Further coupling with COREDIV [80] simulations predicted, for fully attached plasmas, that both the eroded Li and Sn might, however, cause unacceptably strong central plasma cooling and dilution within one second of plasma duration, even if the LM PFC was inertially cooled by a thick tungsten mass.…”

Section: Liquid Metalsmentioning

confidence: 99%

COMPASS Upgrade: a high-field tokamak for ITER- and DEMO-relevant research

Komm,

Jaulmes,

Grover

et al. 2024

Nucl. Fusion

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In order to achieve their goals, future thermonuclear reactors such as ITER and DEMO are expected to operate plasmas with high magnetic field, triangularity and confinement. With the objective to address the corresponding challenges, a concept of the high field (BT ≤ 5 T), high current (IP ≤ 2 MA) COMPASS Upgrade tokamak was established and the device is currently being constructed in Prague, Czech Republic.This contribution provides an overview of the priority physics topics for the future physics programme of COMPASS Upgrade, namely: (i) characterisation of alternative confinement modes, (ii) power exhaust including liquid metals, (iii) operation with hot first wall and (iv) influence of plasma shape on pedestal stability and confinement. The main scenarios are presented, as predicted by METIS and FIESTA codes. Pedestal pressure and density are estimated using EPED, multi-machine semi-empirical scalings and a neutral penetration model. Access to detachment is estimated using a detachment qualifier.

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