Results 101 to 110 of about 12,695 (229)

MHD stability at high beta poloidal and high qo

CRPPSPCProceedings International Workshop on Steady-State Tokamaks, Princeton, USA, January 1993, Vol.
Bondeson, A.
core  

Exploring the physics of a high-performance H-mode scenario with small ELMs at low collisionality in JET with Be/W wall

Nuclear Fusion
A new H-mode regime at low density and low edge safety factor ( q _95 = 3.2, with $I_\mathrm{p}$ = 3 MA) that combines high energy confinement, stationary conditions for density and radiation and small Edge Localized Modes (ELMs) have been found in JET ...
E. de la Luna, J. Garcia, M. Sertoli, P. Lomas, S. Mazzi, Ž. Štancar, M. Dunne, N. Aiba, S. Silburn, M. Faitsch, G. Szepesi, F. Auriemma, I. Balboa, L. Frassinetti, L. Garzotti, S. Menmuir, D. Refy, F. Rimini, E.R. Solano, C. Sozzi, M. Vecsei, JET Contributors   +21 more
doaj   +1 more source

Steady-state burning plasma: a new stage in the development of magnetic confinement fusion energy. [PDF]

Natl Sci Rev, 2023
Wan B, Xu G.
europepmc   +1 more source

Distributed Poloidal Magnetic Field Measurement in Tokamaks Using Polarization-Sensitive Reflectometric Fiber Optic Sensor. [PDF]

Sensors (Basel), 2023
Dandu P, Gusarov A, Leysen W, Beaumont P, Wuilpart M, Jet Contributors.   +5 more
europepmc   +1 more source

Multimegawatt neutral beams for tokamaks [PDF]

, 1979
Most of the large magnetic confinement experiments today and in the near future use high-power neutral-beam injectors to heat the plasma. This review briefly describes this remarkable technique and summarizes recent results as well as near term ...
Kunkel, W.B.
core  

The formation of an radial edge electric field due to finite ion orbit width effects is the possible root cause of the H-mode edge

Nuclear Fusion
Full orbit-following simulations of thermal ions show that finite ion-orbit width effects create charge separation near the last closed flux surface (LCFS) which generates a localized radial electric field.
G.J. Kramer, A. Bortolon, A. Diallo, R. Maingi   +3 more
doaj   +1 more source

Influence of the density gradient on turbulent heat transport at ion-scales: an inter-machine study with the gyrokinetic code stella

Nuclear Fusion
Efficient control of turbulent heat transport is crucial for magnetic confinement fusion reactors. This work discusses the complex interplay between density gradients and microinstabilities, shedding light on their impact on turbulent heat transport in ...
H. Thienpondt, J.M. García-Regaña, I. Calvo, G. Acton, M. Barnes   +4 more
doaj   +1 more source

MHD stability limits on high-. beta. tokamaks

, 1978
Limitations on high-..beta.. tokamaks are imposed by a number of ideal and resistive MHD instabilities. The present paper reports results on three such studies: (1) Numerical analysis using the Princeton PEST code on ..beta.. optimization of tokamaks for
Dewar, R. L., Frieman, E. A., Chance, M. S.   +2 more
core  

Impact of nitrogen seeding on L–H transitions and their role for detachment in ASDEX Upgrade

Nuclear Fusion
The required heating power, $P_{\mathrm{LH}}$ , to access the high confinement regime (H-mode) in nitrogen seeded deuterium plasmas is investigated at the ASDEX Upgrade tokamak. It is shown that a stepwise increase of the nitrogen seeding level increases
G. Birkenmeier, M. Bernert, D. Brida, P. David, R. Fischer, T. Happel, B. Kurzan, T. Lunt, F. Ryter, E. Wolfrum, the ASDEX Upgrade Team   +10 more
doaj   +1 more source

Disruption generated secondary runaway electrons in present day tokamaks

, 2000
An analysis of the runaway electron secondary generation during disruptions in present day tokamaks (JET, JT- 60U, TEXTOR) was made. It was shown that even for tokamaks with the plasma current I ~ 100 kA the secondary generation may dominate the runaway ...
Jaspers, R., Pankratov, I.M.
core