E. Tholerus L. Garzotti Y. Baranov G. Corrigan F. Eriksson D. Farina L. Figini D.M. Harting F. Koechl A. Loarte E. Militello Asp H. Nordman V. Parail S.D. Pinches A.R. Polevoi R. Sartori P. Strand
An important part of the ITER Research Plan [1] is the Pre-Fusion Power Operation (PFPO) phase, which includes demonstration of H-mode plasma operation and the commissioning of ELM control systems. However, since hydrogen or helium are the main ion species in PFPO plasmas, the L–H power threshold PL–H is expected to be cons…
PreprintM. VALOVIČ Y. BARANOV A. BOBOC J. BUCHANAN J. CITRIN E. DELABIE L. GARZOTTI C. GIROUD R. MCKEAN E. LERCHE E. DE LA LUNA V. KIPTILY F. KÖCHL M. MARIN S. MENMUIR C. VON THUN G. TVALASHVILI AND THE JET CONTRIBUTORS
Control of plasma H:D isotope mix using solely shallow pellets (in H or D) was demonstrated in recent experiments, attaining ~50%:50% ratio. The isotope mix propagates from the edge to the core on the confinement timescale. Isotope dependence of energy confinement is within error bar to scaling laws. A dataset is collected for different pellet s…
PreprintA. Loarte A. R. Polevoi M. Schneider S.D. Pinches E. Fable E. Militello Asp Y. Baranov F. Casson G. Corrigan L. Garzotti D. Harting P. Knight F. Koechl V. Parail D. Farina L. Figini H. Nordman P. Strand R. Sartori
The optimum conditions for access to and sustainment of H-mode plasmas and their expected plasma parameters in the Pre-Fusion Power Operation 1 (PFPO-1) phase of the ITER Research Plan, where the additional plasma heating will be provided by 20 MW of Electron Cyclotron Heating (ECH), are assessed in order to identify key open R&D issues. The as…
Preprint PublishedA. Loarte A. R. Polevoi M. Schneider S.D. Pinches E. Fable E. Militello Asp Y. Baranov F. Casson G. Corrigan L. Garzotti D. Harting P. Knight F. Koechl V. Parail D. Farina L. Figini H. Nordman P. Strand R. Sartori
The optimum conditions for access and sustainment of H-mode plasmas and their expected plasma parameters in the Pre-Fusion Operation 1 (PFPO-1) phase of the ITER Research Plan, where the additional plasma heating will be provided by 20 MW of Electron Cyclotron Heating (ECH), are assessed. The assessment is performed on the basis of empirical and…
Preprint PublishedK. K. Kirov Y. Kazakov M. Nocente J. Ongena Y. Baranov F. Casson J. Eriksson L. Giacomelli C. Hellesen V. Kiptily R. Bilato K. Crombe R. Dumont P. Jacquet T. Johnson E. Lerche M. Mantsinen D. Van Eester J. Varje H. Weisen JET Contributors
Understanding the impact of the synergistic effects on fast ion distribution function (DF) is essential for maximising the fusion rates in magnetic confinement fusion plasma. Because fusion reactions such as D-D, D-3He, D-T etc. have different energy dependencies, tailoring the energies of the fast ions to predetermined values optimal for fusion…
Preprint PublishedF.J. Casson H. Patten C. Bourdelle S. Breton J. Citrin F. Koechl C. Angioni Y. Baranov R. Bilato E.A. Belli C.D. Challis G. Corrigan A. Czarnecka O. Ficker L. Frassinetti L. Garzotti M. Goniche J.P. Graves T. Johnson K. Kirov P. Knight E. Lerche M. Mantsinen J. Mylnar M. Sertoli M. Valisa
The evolution of the JET high performance hybrid scenario, including central accumulation of the tungsten (W) impurity, is reproduced with predictive multi-channel integrated modelling over multiple confinement times using first-principle based models. 8 transport channels are modelled predictively, with self-consistent sources, radiation and magne…
Preprint PublishedMartin Valovic Y Baranov G Buchanan J Citrin E Delabie L Frassinetti J M Fontdecaba L Garzotti C Giroud R McKean E Lerche V Kiptily F Köchl M Marin M Maslov S Menmuir G Tvalashvili H Weisen the JET Contributors
Deuterium pellets are injected into initially pure hydrogen H-mode plasma in order to control H:D isotope mixture. The pellets are deposited in outer 20% of minor radius, similar to that expected in ITER creating transiently hollow electron density profiles. The isotope mixture of H:D ~ 45:55% is obtained in the core with pellet fuelling throughput…
Preprint PublishedF.J. Casson H. Patten C. Bourdelle S. Breton J. Citrin F. Koechl C. Angioni Y. Baranov R. Bilato E. Belli C.D. Challis G. Corrigan A. Czarnecka O. Ficker L. Garzotti M. Goniche J.P. Graves T. Johnson K. Kirov P. Knight E. Lerche M. Mantsinen J. Mylnar M. Sertoli M. Valisa JET contributors
Preprint Published
Krassimir Kirov Yu. Baranov I.S. Carvalho C.D. Challis J. Eriksson D. Frigione L. Garzotti J. Graves P. Jacquet D.L. Keeling E. Lerche P.J. Lomas C. Lowry M. Mantsinen F. Rimini and JET Contributors
Fast ion synergistic effects were studied by predictive modelling of JET best performing pulses for various levels of Neutral Beam (NB) and Radio Frequency (RF) power. Calculated DD neutron yields were analysed with the intention of separating the impact of sheer synergistic effects due to changes in fast ion (FI) distribution function (DF) from su…
Preprint PublishedS. Breton F.J. Casson C. Bourdelle J. Citrin Y. Baranov Y. Camenen C. Challis J. Garcia G. Corrigan L. Garzotti S. Henderson F. Koechl M. OMullane T. Puetterich M. Sertoli M. Valisa JET contributors
For the first time, over five confinement times, the self-consistent flux driven time evolution of heat, momentum transport and particle fluxes of electrons and multiple ions including Tungsten (W) is modeled within the integrated modeling platform JETTO [Romanelli M et al PFR 2014], using first principle-based codes : namely, QuaLiKiz [Bourd…
Preprint Published