Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session NO07: Turbulence and Transport in Toroidal Devices
9:30 AM–12:18 PM,
Wednesday, October 19, 2022
Room: 401 ABC
Chair: Alessandro Marinoni, MIT
Abstract: NO07.00007 : Confinement in Mixed Isotope Plasmas with Constant ELM Frequency in JET-ILW*
10:42 AM–10:54 AM
Presenter:
Damian B King
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK)
Authors:
Damian B King
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK)
Eleonora Viezzer
(University of Seville,Spain)
Matteo Baruzzo
(Consorzio RFX, Padova, Italy)
Elena De La Luna
(Laboratorio Nacional de Fusión, CIEMAT, Madrid, Spain,)
Jeronimo Garcia Olaya
(CEA, IRFM, Saint-Paul-lez-Durance, France)
Ephrem Delabie
(Oak Ridge National Laboratory)
Wojech Gromelski
(Institute of Plasma Physics and Laser Microfusion, Warsaw, Poland)
rafael henriques
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Jon C Hillesheim
(Culham Science Centre)
Laszlo Horvath
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Krassimir Kirov
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Morten Lennholm
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Costanza F Maggi
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Mikhail Maslov
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Ash Patel
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Philip A Schneider
(Max-Planck-Institut für Plasmaphysik, Garching b. München, Germany)
Ridhima Sharma
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Tom Wilson
(United Kingdom Atomic Energy Authority, Culham Science Centre, Abingdon, UK,)
Collaboration:
JET contributors
Variations of isotope mixture from H to D were performed in type I ELMy H-mode plasmas of the same magnetic field, plasma current and divertor configuration. These variations were performed with and without the use of ELM-control via the perturbation of the vertical magnetic field. This was included as an attempt to separate the effects of fELM from the isotope effect on pedestal confinement.
A clear increase in plasma stored energy was observed with increasing effective mass, in cases with and without external control of ELMs. This increase was driven by an increase in plasma density driven by the pedestal density. For plasmas that used vertical kicks the plasma thermal stored energy (Wth) varied as ~Meff0.7. Results in a HT mixture matched the results in a HD mixture with the same Meff. Further results in pure tritium proved more difficult to include in the dataset due to changes in the access to H-mode, impurity behaviour and density peaking. This scaling analysis, variation of Ti/Te, tritium behaviour and the results at constant bN will be presented.
*This work has been carried out within the framework of the EUROfusion Consortium, funded by the European Union via the Euratom Research and Training Programme (Grant Agreement No 101052200 — EUROfusion). Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Commission. Neither the European Union nor the European Commission can be held responsible for them.
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