J. Hobirk C. D. Challis A. Kappatou E. Lerche D. Keeling D. King S. Aleiferis E. Alessi F. Auriemma M. Baruzzo E. Belonohy I. S. Carvalho P. Carvalho F. J. Casson A. Chomiczewska J. Citrin I. H. Coffey D. Douai E. Delabie B. Eriksson J. Eriksson O. Ficker A. R. Field M. Fontana L. Frassinetti D. Frigione D. Gallart J. Garcia M. Gelfusa L. Giacomelli E. Giovannozzi C. Giroud M. Goniche C. Ham N. Hawkes R. Henriques J. Hillesheim A. Ho I. Ivanova-Stanik P. Jacquet F. Jaulmes E. Joffrin H. T. Kim V. Kiptily K. Kirov D. Kos E. Kowalska-Strzeciwilk H. Kumpulainen K. Lawson M. Lennholm X. Litaudon P. Lomas E. de la Luna C. Maggi J. Mailloux M. Mantsinen M. Maslov G. Matthews S. Menmuir A. Milocco K. McClements I. G. Miron S. Nowak F. Orsitto L. Piron G. Pucella E. Peluso C. Perez von Thun E. Rachlew C. Reux F. Rimini A. Sahlberg S. Saarelma P. A. Schneider M. Sertoli S. Sharapov S. Silburn A. Sips P. Siren E. Solano Z. Stancar C. Stuart H. Sun D. Valcarcel M. Valisa G. Verdoolaege N. Wendler D. Weston M. Zerbini
The JET hybrid scenario has been developed from low plasma current carbon wall discharges to the record-breaking Deuterium-Tritium plasmas obtained in 2021 with the ITER-like Be/W wall. The development started in pure Deuterium with refinement of the plasma current, and toroidal magnetic field choices and succeeded in solving the heat load challeng…
PublishedHJ. Sun T Wauters PJ. Lomas E. Lerche I. Monakhov C. Noble PC. De Vries K. Kirov I Coffey P Siren B Thomas A Boboc K Palamartchouk G Szepesi E. Joffrin B. Labit DC. McDonald JET Contributors
Ion Cyclotron wave (IC) assisted breakdown would be important for reducing risks to plasma initiation during the ITER pre-fusion operation phase under difficult vessel conditions. Hence, studies were performed at JET, at ITER relevant loop electric field — and in a regime, and , where plasma breakdown had not previously been achieved on JE…
Preprint PublishedL. Piron M. Baruzzo L. Baylor C. D. Challis M. P. Gryaznevich T. C. Hender R. B. Henriques N. Hawkes S. Jachmich E. Joffrin M. Lehnen M. Lennholm Y. Q. Liu J. Mailloux L. Moreira D. Valcarcel
This work describes the usage of Error Field Correction coil system [Barlow I. et al 2001 Fusion Eng. Des. 58-59 189], which is a set of 4 coils located external to the vessel of the JET device, with the aim of introducing non-axisymmetric n=1 magnetic field perturbations in various targeted plasma experiments. Besides being used to characterize…
PurchaseE.R. Solano G. Birkenmeier C. Silva E. Delabie J.C. Hillesheim A. Baciero I. Balboa M. Baruzzo A. Boboc M. Brix C. Bourdelle I.S. Carvalho P. Carvalho C.D. Challis M. Chernyshova A. Chomiczewska R. Coelho T. Craciunescu E. de la Cal E. de la Luna R. Dumont P. Dumortier M. Fontana J.M. Fontdecaba L. Frassinetti D. Gallart J. Garcia C. Giroud W. Gromelski R.B. Henriques J. Hall A. Ho L. Horvath P. Jacquet I. Jepu E. Joffrin A. Kappatou P.J. Lomas D.L. Keeling D.B. King E. Kowalska-Strzęciwilk M. Lennholm E. Lerche E. Litherland-Smith V.G. Kiptily K.K. Kirov A. Loarte B. Lomanowski C.F. Maggi J. Mailloux M.J. Mantsinen M. Maslov A.G. Meigs I. Monakhov R.B. Morales A.H. Nielsen D. Nina C. Noble E. Pawelec M. Poradzinski G. Pucella P. Puglia D. Réfy J.J. Rasmussen E. Righi-Steele F.G. Rimini T. Robinson M. Sertoli S.A. Silburn P. Sirén Ž. Štancar H.J. Sun G. Szepesi D. Taylor B. Thomas E. Tholerus G. Verdoolaege P. Vincenzi B. Viola N. Vianello T. Wilson
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S.N.Gerasimov L.R.Baylor A.Boboc I.S.Carvalho P.Carvalho I.H.Coffey D.Craven J.Flanagan A.Huber V.Huber S.Jachmich I.Jepu E.Joffrin D.Kos S.I.Krasheninnikov U.Kruezi M.Lehnen P.J.Lomas A.Manzanares M.Maslov A.Peacock P.Puglia S.Silburn F.G.Rimini R.D.Smirnov D.Shiraki C.Stuart H.Sun J.Wilson L.E.Zakharov JET Contributors
In 2019, the JET-ILW was equipped with a Shattered Pellet Injector (SPI) system with a wide capability to allow studies on the efficacy of shattered pellets in reducing the electro-magnetic and the thermal loads during disruptions and the avoidance/suppression of the formation of runaway electrons. The fully commissioned system became operationa…
PreprintS.N. Gerasimov P. Abreu L.R. Baylor A. Boboc I.S. Carvalho I.H. Coffey D. Craven V. Huber S. Jachmich E. Joffrin U. Kruezi M. Lehnen P.J. Lomas A. Manzanares M. Maslov E. Matveeva G. Pautasso A. Peacock S. Silburn C. Stuart H. Sun D. Shiraki R. Sweeney J. Wilson L.E. Zakharov
The disruption mitigation system at ITER will include four shattered pellet injectors (SPI), which will be dedicated to the mitigation of electro-magnetic loads (EML), thermal loads and the avoidance and suppression of runaway electrons. Recently the JETILW was equipped with an SPI with a wide capability. Specifically: pellet diameter d = [4.57, 8.…
PreprintK. 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 PublishedD. B. King E. Viezzer I. Balboa M. Baruzzo E. Belonohy J. Buchanan I.S. Carvalho K. Cave-Ayland I. Coffey C.D. Challis E.G. Delabie L. Garzotti S. Hall J.Hillesheim L. Horvath E. Joffrin D. Keeling K. Kirov C.F. Maggi M. Maslov S. Saarelma S. Silburn E.R. Solano M. Stamp D. Valcarcel H.Weisen
A study of mixed hydrogen-deuterium H-mode plasmas has been carried out in JET-ILW to strengthen the physics basis for extrapolations to JET D-T operation and to support the development of strategies for isotope ratio control in future experiments. Variations of input power, gas fuelling and isotopic mixture were performed in H-mode plasmas of the…
Preprint PublishedC. Challis R. Dumont D. Frigione L. Garzotti J. Graves E Lerche J. Mailloux M. Mantsinen F. Rimini F. Casson A. Czarneka R. Felton J. Garcia C. Giroud E. Joffrin H.-T. Kim M. Lennholm P. Lomas C. Lowry L. Meneses I Nunes et al.
The JET exploitation plan foresees D-T operations in 2019-2020. With respect to the first D-T campaign in 1998, when JET was equipped with a carbon wall, the experiments will be conducted in presence of a beryllium-tungsten ITER-like wall and will benefit from an extended and improved set of diagnostics and higher available additional heating power…
Preprint PublishedL. Piron T. C. Hender E. Joffrin F. Auriemma P. Buratti R. Paccagnella P. Zanca C. Challis S. Gerasimov R. B. Henriques L. Marrelli P. Lomas F. Rimini D. Terranova
The presence of Error Fields (EFs) in magnetic fusion devices can affect energy confinement and plasma stability by braking plasma rotation, by inducing fast particle losses and being amplified when exploring high-b regimes. The resulting EF Locked Modes (LMs) can be stabilized by NBI injection through the rotation shielding mechanism. However, …
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