Results 21 to 30 of about 18,296 (224)

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

, 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, Abhangi, Mitul, Futatani, Shimpei, Gallart, Daniel, Gutiérrez, Albert, Joffrin, Emmanuel, Mantsinen, Mervi Johanna, Rakha, Allah, Saez Pous, Xavier   +8 more
core   +2 more sources

Simultaneous Observation of Tungsten Spectra of W⁰ to W⁴⁶⁺ Ions in Visible, VUV and EUV Wavelength Ranges in the Large Helical Device

Atoms, 2021
Spectroscopic studies for emissions released from tungsten ions have been conducted in the Large Helical Device (LHD) for contribution to the tungsten transport study in tungsten divertor fusion devices and for expansion of the experimental database of ...
Tetsutarou Oishi, Shigeru Morita, Daiji Kato, Izumi Murakami, Hiroyuki A. Sakaue, Yasuko Kawamoto, Tomoko Kawate, Motoshi Goto   +7 more
doaj   +1 more source

High resolution charge-exchange spectroscopic measurements of aluminum impurity ions in a high temperature plasma [PDF]

, 2012
Charge-exchange recombination spectroscopy, which is generally used to measure low-Z impurities in fusion devices, has been used for measuring Al+11 and Al+13 impurities in the Madison Symmetric Torus reversed field pinch.
Chapman, B. E., Craig, D., Den Hartog, D. J., Eilerman, S., Fiksel, G., Kumar, S.T.A., Nornberg, M., O'Mullane, Martin, Parke, E., Reusch, J.   +9 more
core   +4 more sources

Characterization of a spheromak plasma gun: The effect of refractory electrode coatings [PDF]

, 1991
In order to investigate the proposition that high-Z impurities are responsible for the anomalously short lifetime of the Caltech spheromak, the center electrode of the spheromak plasma gun has been coated with a variety of metals (bare steel, copper ...
Bailey, A. D., III, Bellan, P. M., Brown, M. R.   +2 more
core   +1 more source

Evaluation of plasma impurity concentration during radiative divertor operation mode on EAST

He jishu, 2022
BackgroundBy injecting gaseous neon (Ne) or argon (Ar) into the divertor region, the radiative divertor operation mode has been successfully realized on experimental advanced superconducting tokamak (EAST).
JI Huajian, ZHANG Hongming, YANG Xiuda, YIN Xianghui, LI Kedong, HE Liang, FU Jia, WANG Fudi, SHEN Yongcai, WAN Shunkuan, LYU Bo, GONG Xueyu, GONG Xianzu, ZANG Qing, WANG Yumin, LIN Xin, WANG Shouxin   +16 more
doaj   +1 more source

Impact of minority concentration on fundamental (H)D ICRF heating performance in JET-ILW [PDF]

, 2014
ITER will start its operation with non-activated hydrogen and helium plasmas at a reduced magnetic field of B-0 = 2.65 T. In hydrogen plasmas, the two ion cyclotron resonance frequency (ICRF) heating schemes available for central plasma heating ...
A. Czarnecka, D. Van Eester, E. Lerche, F. Rimini, I. Monakhov, K. Crombé, L. Colas, M. Santala, M.-L. Mayoral, null null, P. Jacquet, V. Bobkov   +11 more
core   +2 more sources

OEDGE modeling for the planned tungsten ring experiment on DIII-D

Nuclear Materials and Energy, 2017
The OEDGE code is used to model tungsten erosion and transport for experiments with toroidal rings of high-Z metal tiles in the DIII-D tokamak. Such modeling is needed for both experimental and diagnostic design to have estimates of the expected core and
J.D. Elder, P.C. Stangeby, T. Abrams, R. Ding, A.W. Leonard, A.G. McLean, D.L. Rudakov, E.A. Unterberg, J.G. Watkins   +8 more
doaj   +1 more source

Observation of reduced-turbulence regime with tungsten injection in HL-2A edge plasmas

Nuclear Fusion, 2023
A reduced-turbulence regime has been observed in HL-2A NBI-heated deuterium plasmas. The transition to this regime is achieved by injecting a certain amount of tungsten into the plasma based on the laser blow-off technique.
Q. Zou, J. Cheng, Z.B. Shi, Y. Xu, L.W. Yan, C.F. Dong, X. Chen, W. Zhang, Y.J. Zhu, Z.H. Huang, W.C. Wang, N. Wu, L. Liu, C.J. Tang, X.Q. Ji, W.L. Zhong, M. Xu   +16 more
doaj   +1 more source

Effects of the equilibrium model on impurity transport in tokamaks [PDF]

, 2013
Gyrokinetic simulations of ion temperature gradient mode and trapped electron mode driven impurity transport in a realistic tokamak geometry are presented and compared with results using simplified geometries.
Anderson, Johan, Fazendeiro, Luis, Nordman, Hans, Skyman, Andreas, Strand, Pär, Tegnered, Daniel   +5 more
core   +2 more sources

3D simulations of gas puff effects on edge plasma and ICRF coupling in JET [PDF]

, 2017
Recent JET (ITER-Like Wall) experiments have shown that the fueling gas puffed from different locations of the vessel can result in different scrape-off layer (SOL) density profiles and therefore different radio frequency (RF) coupling.
Bilato, R., Bobkov, V., Coster, D., Feng, Y., Goniche, M., Guillemaut, C., Harting, D., Jacquet, P., Jet Contributors, The, Lerche, E., Lunt, T., Noterdaeme, J.-M., Szepesi, G., van Eester, D., Zhang, Wei   +14 more
core   +4 more sources