Results 31 to 40 of about 25,846,284 (157)

Spatio-temporal evolution of the H -> L back transition [PDF]

, 2013
International audienceSince ITER will operate close to threshold and with limited control, the H → L back transition is a topic important for machine operations as well as physics.
T. Estrada, Estrada, T, Mcdonald, D. C., Gürcan, ÖD, Miki, K., D. C. McDonald, G. R. Tynan, Diamond, PH, Tynan, G.R., Ö. D. Gürcan, Gürcan, Özgür,, Tynan, GR, K. Miki, P. H. Diamond, Schmitz, L, McDonald, DC, Schmitz, L., Estrada, T., Gürcan, Özgür, D., L. Schmitz, Diamond, P.H., Miki, K   +21 more
core   +1 more source

The feasibility of the L-H transition for a purely electron-heated EU-DEMO tokamak

Nuclear Fusion
We study numerically the feasibility of achieving the L-H transition in the current EU-DEMO tokamak baseline using uniquely direct electron heating. The ASTRA code coupled to the TGLF turbulent transport model is used to predict steady-state kinetic ...
G. Suárez López, G. Tardini, E. Fable, M. Siccinio, H. Zohm   +4 more
doaj   +1 more source

Empirical scaling of the L–H threshold power for metal wall tokamaks using a multi-device database

Nuclear Fusion
The empirical scaling for the H-mode power threshold in tokamaks has been revisited using a database with threshold data from machines with a metallic first wall as part of International Tokamak Physics Activity (ITPA) task TC-26.
E. Delabie, E.R. Solano, J.W. Hughes, C.F. Maggi, F. Ryter, G. Birkenmeier, P. Carvalho, M. Cavedon, M. Chernyshova, P. David, J. Hillesheim, U. Plank, the EUROfusion Tokamak Exploitation Team, the ASDEX Upgrade Team, JET Contributors   +14 more
doaj   +1 more source

Phase Transition and Thermal Expansion of Ba3RB3O9 (R = Sm–Yb, and Y)

High Temperature Materials and Processes, 2017
High temperature powder X-ray diffraction measurements of Ba3RB3O9 (R=Sm–Yb, and Y) were carried out at temperatures ranging from room temperature to just below the corresponding melting temperatures (1,200–1,300 °C).
Simura Rayko, Kawai Shohei, Sugiyama Kazumasa   +2 more
doaj   +1 more source

Neural network identification of the weakly coherent mode in I-mode discharge on EAST

Nuclear Fusion, 2023
The improved energy confinement mode (I-mode) is widely considered as an important operation regime for ITER. I-mode implementation depends on the specified basic plasma parameters and certain operation conditions, which are discovered by statistical ...
K.N. Yang, Z.X. Liu, J. Liu, F.F. Long, T.Y. Xia, X. Gao, Y.J. Liu, J.Y. Li, P.C. Li, C.C. Deng, X.Y. Yin, H. Li, J.L. Xie, T. Lan, W.Z. Mao, A.D. Liu, C. Zhou, W.X. Ding, G. Zhuang, W.D. Liu, the EAST Team   +20 more
doaj   +1 more source

Recent progress in understanding the L–H transition physics from ASDEX Upgrade. Invited Paper

, 2012
Kinetic edge profiles are measured with high spatial and temporal resolution and their behaviour before and after the time of the L-H transition is analysed.
Aumayr, Friedrich, Sauter, P., Aumayr, F., Wolfrum, Elisabeth, Burckhart, A., Fischer, R., Fable, E., Rathgeber, S.K., Rathgeber, S., Pütterich, T., Suttrop, W., Kurzan, B., Viezzer, E., Barrera Orte, L., Ryter, F., Willensdorfer, Matthias, Wolfrum, E., Willensdorfer, M., Barrera-Orte, L.   +18 more
core   +1 more source

Soft H-L back transitions induced by RMP coils in high plasmas on EAST

Nuclear Fusion
Soft H-mode to L-mode (H-L) back transitions, combined with simultaneous particle and heat pumping via $n = 2$ resonant magnetic perturbations (RMPs), have been achieved in EAST plasmas at low safety factor ( $q_{95} = 3.5-4.0$ ) without reducing ...
L.M. Shao, H.H. Wang, S.X. Wang, Z.C. Lin, R. Chen, S. Gu, W.B. Hua, P. Li, Y.C. Li, Z.G. Li, S.T. Mao, H. Sheng, Z.Y. Si, G.S. Xu, Q. Zang, L. Zhang, H.L. Zhao, C. Zhou, the EAST Team   +18 more
doaj   +1 more source

Effects of a Dietary L-Carnitine Supplementation on Performance, Energy Metabolism and Recovery from Calving in Dairy Cows

Animals, 2020
Dairy cows are metabolically challenged during the transition period. Furthermore, the process of parturition represents an energy-consuming process.
Jennifer Meyer, Susanne Ursula Daniels, Sandra Grindler, Johanna Tröscher-Mußotter, Mohamadtaher Alaedin, Jana Frahm, Liane Hüther, Jeannette Kluess, Susanne Kersten, Dirk von Soosten, Ulrich Meyer, Erika Most, Klaus Eder, Helga Sauerwein, Jana Seifert, Korinna Huber, Jürgen Rehage, Sven Dänicke   +17 more
doaj   +1 more source

Transition Gas Flow Between Two Parallel Plates with a Slit-Type Obstacle of Various Geometry by Event Driven Molecular Dynamics Simulation

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
In this study, pressure-driven flow through a slit-type obstacle with various length (L) and height (H) placed in between two parallel plates was investigated by Event Driven Molecular Dynamics (EDMD) simulation.
Volkan Ramazan Akkaya, İlyas Kandemir, Mustafa Koç   +2 more
doaj   +1 more source

Study of the phase transition dynamics of the L to H transition [PDF]

, 1997
A highly radiating zone (MARFE) just above the divertor X-point has been used to access the marginal transition regime P{sub sep} {approx} P{sub thres} to study the existence of a critical point for the L to H transition.
Rettig, C. L., Moyer, R. A., Rhodes, T. L.   +2 more
core