Idioma:

Saturated ideal modes in advanced tokamak regimes in MAST

Chapman, I.T ; Hua, M.-D ; Pinches, S.D ; Akers, R.J ; Field, A.R ; Graves, J.P ; Hastie, R.J ; Michael, C.A

Nuclear fusion, 2010-04, Vol.50 (4), p.045007-045007 [Periódico revisado por pares]

Bristol: IOP Publishing

Texto completo disponível

Citações Citado por

Enviar para

Título:
Saturated ideal modes in advanced tokamak regimes in MAST
Autor: Chapman, I.T ; Hua, M.-D ; Pinches, S.D ; Akers, R.J ; Field, A.R ; Graves, J.P ; Hastie, R.J ; Michael, C.A
Assuntos: Exact sciences and technology ; Ideal & resistive mhd modes; kinetic modes ; Instability ; Magnetic confinement and equilibrium ; Magnetohydrodynamics ; Magnetohydrodynamics (including electron magnetohydrodynamics) ; Masts ; MHD ; Physics ; Physics of gases, plasmas and electric discharges ; Physics of plasmas and electric discharges ; Plasma dynamics and flow ; Plasmas ; Safety factors ; Stability ; Tokamak devices ; Tokamaks ; Unity
É parte de: Nuclear fusion, 2010-04, Vol.50 (4), p.045007-045007
Notas: ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
Descrição: MAST plasmas with a safety factor above unity and a profile with either weakly reversed shear or broad low-shear regions, regularly exhibit long-lived saturated ideal magnetohydrodynamic (MHD) instabilities. The toroidal rotation is flattened in the presence of such perturbations and the fast ion losses are enhanced. These ideal modes, distinguished as such by the notable lack of islands or signs of reconnection, are driven unstable as the safety factor approaches unity. This could be of significance for advanced scenarios, or hybrid scenarios which aim to keep the safety factor just above rational surfaces associated with deleterious resistive MHD instabilities, especially in spherical tokamaks which are more susceptible to such ideal internal modes. The role of rotation, fast ions and ion diamagnetic effects in determining the marginal mode stability is discussed, as well as the role of instabilities with higher toroidal mode numbers as the safety factor evolves to lower values.
Editor: Bristol: IOP Publishing
Idioma: Inglês

Links

View record in Pascal Francis

Voltar para lista de resultados

Realização: Logos de Redes Sociais:

Saturated ideal modes in advanced tokamak regimes in MAST

Chapman, I.T ; Hua, M.-D ; Pinches, S.D ; Akers, R.J ; Field, A.R ; Graves, J.P ; Hastie, R.J ; Michael, C.A

Bristol: IOP Publishing

Buscando em bases de dados remotas. Favor aguardar.