Results 1 to 10 of about 466 (242)
Stability of divertor detachment
Nuclear Materials and Energy, 2017 The 2D simulations of edge plasma transport show that unlike some earlier publications, the impurity radiation loss per se does not cause the bifurcation-like transition to detached divertor regime.
Yanzeng Zhang +2 more
exaly +4 more sources
The effect of divertor closure on detachment onset in DIII-D
Nuclear Materials and Energy, 2019 Experiments at DIII-D use different divertor geometries to measure the effect of divertor closure on detachment onset. We compare matched H-mode discharges in the closed (upper) divertor and the open (lower) divertor and use as a detachment onset metric ...
J G Watkins, A G Mclean, A W Leonard
exaly +3 more sources
Dependence of neutral pressure on detachment in the small angle slot divertor at DIII-D
Nuclear Materials and Energy, 2019 Local neutral pressure measurements in the closed small angle slot (SAS) divertor [1,2] on DIII-D show a large increase when the divertor plasma shifts from high recycling into detachment. In-tile pressure gauges were installed to measure the pressure in
Morgan Shafer, Livia Casali, H Y Guo
exaly +3 more sources
Spectroscopic investigations of divertor detachment in TCV [PDF]
Nuclear Materials and Energy, 2017 The aim of this work is to provide an understanding of detachment at TCV with emphasis on analysis of the Balmer line emission. A new Divertor Spectroscopy System has been developed for this purpose. Further development of Balmer line analysis techniques has allowed detailed information to be extracted from the three-body recombination contribution to ...
Bruce Lipschultz +2 more
exaly +7 more sources
Plasma detachment in divertor tokamaks
Plasma Physics and Controlled Fusion, 2018 Abstract Observations of divertor plasma detachment in tokamaks are reviewed. Plasma detachment is characterized in terms of transport and dissipation of power, momentum and particle flux along the open field lines from the midplane to the divertor. Asymmetries in detachment onset and other characteristics between
exaly +3 more sources
Nuclear Materials and Energy, 2017 Toroidal and poloidal flows of injected N+ ions were measured in the high-field side (HFS) scrape-off layer (SOL) of ASDEX Upgrade by Doppler spectroscopy with different degrees of HFS divertor detachment.
Luis Guimarãis +2 more
exaly +3 more sources
Nuclear Materials and Energy, 2022 Dedicated experiments in DIII-D find that magnetic shaping and divertor target geometry significantly affect the divertor plasma conditions and divertor detachment process in the small-angle-slot (SAS) divertor.
H.Q. Wang +12 more
doaj +1 more source
The effect of impurity seeding into the closed divertor on plasma detachment in the HL-2A tokamak
Nuclear Fusion, 2023 Recent progress towards an increased understanding of detached divertor physics has been made with the highly closed divertor geometry in HL-2A. Non-intrinsic impurities were injected into the outer divertor chamber, and increased divertor neutral ...
J.M. Gao +23 more
doaj +1 more source
Study on divertor detachment and pedestal characteristics in the DIII-D upper closed divertor
Nuclear Fusion, 2023 Experiments performed in DIII-D demonstrate that higher plasma current and heating power combined with impurity seeding facilitate the achievement of divertor detachment with a higher pedestal pressure and higher plasma performance in H-mode plasmas with
H.Q. Wang +14 more
doaj +1 more source
A study of the influence of plasma–molecule interactions on particle balance during detachment
Nuclear Materials and Energy, 2021 In this work we provide experimental insights into the impact of plasma–molecule interactions on the target ion flux decrease during divertor detachment achieved through a core density ramp in the TCV tokamak. Our improved analysis of the hydrogen Balmer
Kevin Verhaegh +11 more
doaj +1 more source