Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas
This paper presents a study on the dependence of the ion temperature stiffness on the plasma main ion isotope mass in JET ITER-like wall and C wall discharges. To this aim, a database of H, D and T shots is analyzed, including new dedicated shots, comparing experiments with lower and higher power in...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/adab04 |
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| author | D. Brioschi P. Mantica A. Mariani N. Bonanomi E. Delabie J. Garcia N. Hawkes I. Jepu D. Keeling E. Lerche E. Litherland-Smith C.F. Maggi S. Menmuir G. Szepesi D. Taylor D. Van Eester JET Contributors |
| author_facet | D. Brioschi P. Mantica A. Mariani N. Bonanomi E. Delabie J. Garcia N. Hawkes I. Jepu D. Keeling E. Lerche E. Litherland-Smith C.F. Maggi S. Menmuir G. Szepesi D. Taylor D. Van Eester JET Contributors |
| author_sort | D. Brioschi |
| collection | DOAJ |
| description | This paper presents a study on the dependence of the ion temperature stiffness on the plasma main ion isotope mass in JET ITER-like wall and C wall discharges. To this aim, a database of H, D and T shots is analyzed, including new dedicated shots, comparing experiments with lower and higher power injected by the NBI system. In order to characterize the turbulence dependence on the isotope mass, three of these discharges (two in T and one in D) with same external heating scheme are studied in detail and interpreted with gyrokinetic linear and nonlinear simulations. The analysis is performed at fixed radius $\rho_\mathrm{tor} = 0.33$ , selected in order to maximize the electromagnetic stabilizing effects on turbulence, both from thermal and suprathermal particles. The experimental results show a clear ion temperature stiffness reduction when heavier isotopes are considered, thus moving from H to D to T, which is attributed to an increasing thermal electromagnetic stabilization with increasing main isotope mass. |
| format | Article |
| id | doaj-art-0e56126508aa468c82d575c1dd1c3eb1 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-0e56126508aa468c82d575c1dd1c3eb12025-01-28T12:18:48ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202605410.1088/1741-4326/adab04Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmasD. Brioschi0https://orcid.org/0009-0003-9138-1370P. Mantica1https://orcid.org/0000-0001-5939-5244A. Mariani2https://orcid.org/0000-0003-0476-3825N. Bonanomi3E. Delabie4J. Garcia5https://orcid.org/0000-0003-0900-5564N. Hawkes6I. Jepu7D. Keeling8E. Lerche9E. Litherland-Smith10C.F. Maggi11https://orcid.org/0000-0001-7208-2613S. Menmuir12G. Szepesi13D. Taylor14https://orcid.org/0000-0002-0465-2466D. Van Eester15https://orcid.org/0000-0002-4284-3992JET ContributorsDipartimento di Fisica ‘G. Occhialini’, Università di Milano-Bicocca , Milan, Italy; Istituto per la Scienza e Tecnologia dei Plasmi, CNR , via Cozzi 53, 20125 Milan, ItalyIstituto per la Scienza e Tecnologia dei Plasmi, CNR , via Cozzi 53, 20125 Milan, ItalyIstituto per la Scienza e Tecnologia dei Plasmi, CNR , via Cozzi 53, 20125 Milan, ItalyMax Planck Institute for Plasma Physics , Boltzmannstr. 2, 85748 Garching, GermanyOak Ridge National Laboratory , Oak Ridge, TN 37831, United States of AmericaCEA, IRFM , F-13108 Saint Paul-lez-Durance, FranceUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, Ireland; Laboratory for Plasma Physics, ERM/KMS , Brussels, BelgiumUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandUKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern, IrelandLaboratory for Plasma Physics, ERM/KMS , Brussels, BelgiumThis paper presents a study on the dependence of the ion temperature stiffness on the plasma main ion isotope mass in JET ITER-like wall and C wall discharges. To this aim, a database of H, D and T shots is analyzed, including new dedicated shots, comparing experiments with lower and higher power injected by the NBI system. In order to characterize the turbulence dependence on the isotope mass, three of these discharges (two in T and one in D) with same external heating scheme are studied in detail and interpreted with gyrokinetic linear and nonlinear simulations. The analysis is performed at fixed radius $\rho_\mathrm{tor} = 0.33$ , selected in order to maximize the electromagnetic stabilizing effects on turbulence, both from thermal and suprathermal particles. The experimental results show a clear ion temperature stiffness reduction when heavier isotopes are considered, thus moving from H to D to T, which is attributed to an increasing thermal electromagnetic stabilization with increasing main isotope mass.https://doi.org/10.1088/1741-4326/adab04heat transportgyrokineticsJETisotope effection stiffness |
| spellingShingle | D. Brioschi P. Mantica A. Mariani N. Bonanomi E. Delabie J. Garcia N. Hawkes I. Jepu D. Keeling E. Lerche E. Litherland-Smith C.F. Maggi S. Menmuir G. Szepesi D. Taylor D. Van Eester JET Contributors Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas Nuclear Fusion heat transport gyrokinetics JET isotope effect ion stiffness |
| title | Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas |
| title_full | Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas |
| title_fullStr | Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas |
| title_full_unstemmed | Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas |
| title_short | Experimental study and gyrokinetic simulations of isotope effects on core heat transport in JET tokamak deuterium and tritium plasmas |
| title_sort | experimental study and gyrokinetic simulations of isotope effects on core heat transport in jet tokamak deuterium and tritium plasmas |
| topic | heat transport gyrokinetics JET isotope effect ion stiffness |
| url | https://doi.org/10.1088/1741-4326/adab04 |
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