A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear.
New transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. [Phys. Rev. Lett. 102, 175002 (2009)] results from the combined effect of high rotational shear and low magnetic shear. The observations have important implication...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2011
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| _version_ | 1797101551752314880 |
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| author | Mantica, P Angioni, C Challis, C Colyer, G Frassinetti, L Hawkes, N Johnson, T Tsalas, M deVries, P Weiland, J Baiocchi, B Beurskens, M Figueiredo, A Giroud, C Hobirk, J Joffrin, E Lerche, E Naulin, V Peeters, A Salmi, A Sozzi, C Strintzi, D Staebler, G Tala, T Van Eester, D |
| author_facet | Mantica, P Angioni, C Challis, C Colyer, G Frassinetti, L Hawkes, N Johnson, T Tsalas, M deVries, P Weiland, J Baiocchi, B Beurskens, M Figueiredo, A Giroud, C Hobirk, J Joffrin, E Lerche, E Naulin, V Peeters, A Salmi, A Sozzi, C Strintzi, D Staebler, G Tala, T Van Eester, D |
| author_sort | Mantica, P |
| collection | OXFORD |
| description | New transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. [Phys. Rev. Lett. 102, 175002 (2009)] results from the combined effect of high rotational shear and low magnetic shear. The observations have important implications for the understanding of improved ion core confinement in advanced tokamak scenarios. Simulations using quasilinear fluid and gyrofluid models show features of stiffness mitigation, while nonlinear gyrokinetic simulations do not. The JET experiments indicate that advanced tokamak scenarios in future devices will require sufficient rotational shear and the capability of q profile manipulation. |
| first_indexed | 2024-03-07T05:53:27Z |
| format | Journal article |
| id | oxford-uuid:e9b23c43-333b-444e-b63b-8f6e08197f8f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:53:27Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:e9b23c43-333b-444e-b63b-8f6e08197f8f2022-03-27T10:56:25ZA key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e9b23c43-333b-444e-b63b-8f6e08197f8fEnglishSymplectic Elements at Oxford2011Mantica, PAngioni, CChallis, CColyer, GFrassinetti, LHawkes, NJohnson, TTsalas, MdeVries, PWeiland, JBaiocchi, BBeurskens, MFigueiredo, AGiroud, CHobirk, JJoffrin, ELerche, ENaulin, VPeeters, ASalmi, ASozzi, CStrintzi, DStaebler, GTala, TVan Eester, DNew transport experiments on JET indicate that ion stiffness mitigation in the core of a rotating plasma, as described by Mantica et al. [Phys. Rev. Lett. 102, 175002 (2009)] results from the combined effect of high rotational shear and low magnetic shear. The observations have important implications for the understanding of improved ion core confinement in advanced tokamak scenarios. Simulations using quasilinear fluid and gyrofluid models show features of stiffness mitigation, while nonlinear gyrokinetic simulations do not. The JET experiments indicate that advanced tokamak scenarios in future devices will require sufficient rotational shear and the capability of q profile manipulation. |
| spellingShingle | Mantica, P Angioni, C Challis, C Colyer, G Frassinetti, L Hawkes, N Johnson, T Tsalas, M deVries, P Weiland, J Baiocchi, B Beurskens, M Figueiredo, A Giroud, C Hobirk, J Joffrin, E Lerche, E Naulin, V Peeters, A Salmi, A Sozzi, C Strintzi, D Staebler, G Tala, T Van Eester, D A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title | A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title_full | A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title_fullStr | A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title_full_unstemmed | A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title_short | A key to improved ion core confinement in the JET tokamak: ion stiffness mitigation due to combined plasma rotation and low magnetic shear. |
| title_sort | key to improved ion core confinement in the jet tokamak ion stiffness mitigation due to combined plasma rotation and low magnetic shear |
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