Results 1 to 10 of about 447 (244)

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.
S.I. Krasheninnikov, A.S. Kukushkin, A.A. Pshenov, A.I. Smolyakov, Yanzeng Zhang   +4 more
doaj   +2 more sources

Integration of full divertor detachment with improved core confinement for tokamak fusion plasmas [PDF]

Nature Communications, 2021
Liang Wang, Huiqian Wang, S Y Ding
exaly   +2 more sources

Real-time feedback control of the impurity emission front in tokamak divertor plasmas [PDF]

Nature Communications, 2021
Timo Ravensbergen, Matthijs van Berkel, Artur Perek   +2 more
exaly   +2 more sources

Dependence of particle and power dissipation on divertor geometry and plasma shaping in DIII-D small-angle-slot divertor

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, X. Ma, R. Maurizio, H.Y. Guo, D.M. Thomas, J.G. Watkins, M.W. Shafer, A.W. Hyatt, A.L. Moser, J. Ren, A. McLean, F. Scotti, P. Stangeby   +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, L.Z. Cai, C.Z. Cao, H.C. Ma, R. Ke, N. Wu, Y. Hu, X.Y. Gao, C.H. Cui, Z.H. Huang, L. Nie, L. Liu, Z.C. Yang, X. Yu, Y.G. Li, M. Jiang, G.Q. Xue, W.L. Zhong, T. Wu, Z.B. Shi, L.W. Yan, X.Q. Ji, M. Xu, HL-2A Team   +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, D.M. Thomas, A.W. Leonard, X.X. Ma, H.Y. Guo, A.L. Moser, J.G. Watkins, F. Scotti, C. Lasnier, M.E. Fenstermacher, A.G. McLean, M.W. Shafer, B. Grierson, J. Ren, T.H. Osborne   +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, Bruce Lipschultz, James Harrison, Basil Duval, Chris Bowman, Alexandre Fil, Daljeet Singh Gahle, David Moulton, Omkar Myatra, Artur Perek, Christian Theiler, Mirko Wensing   +11 more
doaj   +1 more source

Measurements of heat flux components due to charged and non-charged particles in DIII-D divertor near and under detachment

Nuclear Materials and Energy, 2023
Surfacing Eroding Thermocouples (SETC) have been used to provide high spatial and temporal resolution heat flux measurement in DIII-D. SETCs were first tested in the lower divertor of DIII-D using the Divertor Material Evaluation System (DiMES), then an ...
J. Ren, D.C. Donovan, J.G. Watkins, H.Q. Wang, X.X. Ma, R. Maurizio, M.W. Shafer, D. Rudakov, P.C. Stangeby, D. Thomas, S. Hong   +10 more
doaj   +1 more source

Control of tungsten impurity source and edge transport using different gas injection with full tungsten divertor on EAST

Nuclear Materials and Energy, 2022
Tungsten (W) erosion and edge transport are investigated for EAST L-mode discharges with different gas injection. It is found that W erosion can be suppressed or mitigated by Ne or D2 seeding when divertor detachment is achieved.
R. Ding, G.L. Xu, H. Wang, F. Ding, L. Zhang, Q. Zhang, K.D. Li, J.B. Liu, S. Brezinsek, A. Kirschner, S.X. Wang, B.F. Gao, L.Y. Meng, L. Wang, H. Xie, H. Si, R. Yan, D.H. Zhu, J.L. Chen   +18 more
doaj   +1 more source

The role of drifts on the isotope effect on divertor plasma detachment in JET Ohmic discharges

Nuclear Materials and Energy, 2020
Experiments in JET-ILW Ohmic confinement mode plasmas show that the line-averaged detachment onset density in deuterium discharges is approx. 10% lower than in hydrogen discharges.
V. Solokha, M. Groth, S. Brezinsek, M. Brix, G. Corrigan, C. Guillemaut, D. Harting, S. Jachmich, U. Kruezi, S. Marsen, S. Wiesen   +10 more
doaj   +1 more source