All Papers - UKAEA Scientific Publications

Showing 11 - 20 of 31 UKAEA Paper Results

UKAEA-CCFE-PR(23)1802023

"L-H transition studies in recent Tritium and Deuterium-Tritium campaigns at JET"
- E.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
- Preprint
- Published
UKAEA-CCFE-PR(23)1702023

"Tritium Neutral Beam Injection on JET: Calibration and Plasma Measurements"
- D.B. King
- R. Sharma
- C.D. Challis
- A. Bleasdal
- E.G. Delabie
- D. Douai
- D. Keeling
- E. Lerche
- M.Lennholm
- J. Mailloux
- G. Matthews
- M. Nicassio
- Z. Stancar
- T. Wilson
Neutral Beam Injection (NBI) is a flexible auxiliary heating method for tokamak plasmas, capable of being efficiently coupled to the various plasma configurations required in the Tritium and mixed DeuteriumTritium Experimental campaign (DTE2) on the JET device. High NBI power was required for high fusion yield and alpha particle studies and to …
- Preprint
- Published
UKAEA-CCFE-PR(23)1652023

"Impact of RF waves – fast NBI ions interaction on the fusion performance in JET DTE2 campaign"
- K. Kirov
- C. Challis
- E. De la Luna
- J. Eriksson
- D. Gallart
- J. Garcia
- M. Gorelenkova
- J. Hobirk
- P. Jacquet
- A. Kappatou
- Y. Kazakov
- D. Keeling
- D. King
- E. Lerche
- C. Maggi
- J. Mailloux
- P. Mantica
- M. Mantsinen
- M. Maslov
- S. Menmuir
- P. Siren
- Z. Stancar
- D. Van Eester
- JET Contributors
This work studies the interaction between Radio Frequency (RF) waves used for Ion Cyclotron Resonance Heating (ICRH) and the fast D and T Neutral Beam Injected (NBI) ions in DT plasma. The focus is on the effect of this interaction, also referred to as synergistic effects, on the fusion performance in the recent JET DTE2 campaign. Experimental d…
- Preprint
- Published
UKAEA-CCFE-CP(23)642023

"OBSERVATION OF ALPHA PARTICLES IN DT- AND T-PLASMAS ON JET"
The fusion reaction between deuterium and tritium, D(T,n)4He is the main source of energy in future thermonuclear reactors. Charged fusion products of this reaction, α-particles (4He-ions), are born with an average energy of 3.5 MeV. Transferring energy to the thermal plasma during their slowing down, the…
- Preprint
UKAEA-CCFE-PR(23)1442023

"Control of plasma density and isotope mix by peripheral fuelling pellets in JET D-T experiments"
- M. Valovič
- A. Boboc
- P. Carvalho
- I. Carvalho
- L. Garzotti
- F. Köchl
- J. C. Lowry
- S. Aleiferis
- C. Maggi
- P. Blatchford
- M. Fontdecaba Climent
- L. Frassinetti
- C. Olde
- R. B. Morales
- S. Nowak
- E. de la Luna
- F. Rimini
- Z. Stancar
- S. Silburn
- G. Tvalashvili
- M. Brix
- M. Vecsei
- D. Dunai
- D. Réfy
- the JET team
A dataset of baseline DT plasmas with peripheral HFS fuelling pellets has been produced on JET, in order to mimic the situtation in ITER. During the pellet ablation phase prompt particle losses due to pellet triggered ELM can be detected. Regarding pellet deposition, the data indicate that plasmoids drift velocity might be smaller than predicted…
- Preprint
- Published
UKAEA-CCFE-PR(23)1302023

"Stability analysis of toroidal Alfven eigenmodes observed in JET deuterium-tritium internal transport barrier plasmas"
- M. Fitzgerald
- R. Dumont
- D. Keeling
- J. Mailloux
- S. Sharapov
- M. Dreval
- A. Figueiredo
- R. Coelho
- J. Ferreira
- P. Rodrigues
- F. Nabais
- D. Borba
- Ž. Štancar
- G. Szepesi
- R.A. Tinguely
- P.G. Puglia
- H.J.C. Oliver
- V. Kiptily
- M. Baruzzo
- M. Lennholm
- P. Siren
- J. Garcia
- C.F. Maggi
A Toroidal Alfven eigenmode (TAE) has been observed to be driven by alpha particles in a JET deuterium-tritium internal transport barrier plasma. The observation occurred 50ms after the removal of neutral beam heating (NBI). The mode is observed on magnetics, soft-xray, interferometry and reflectometry measurements. We present detailed stability…
- Preprint
- Published
UKAEA-CCFE-PR(23)1292023

"Toroidal Alfven eigenmodes observed in low power JET deuterium-tritium plasmas"
The Joint European Torus recently carried out an experimental campaign using a plasma consisting of both deuterium (D) and tritium (T). We observed a high-frequency mode using a reflectometer and an interferometer in a D-T plasma heated with low power neutral beam injection, PNBI = 11.6MW. This mode was observed at a frequency f = 156kHz and was lo…
- Preprint
- Published
UKAEA-CCFE-PR(23)1252023

"JET D-T scenario with optimized non-thermal fusion"
- M Maslov
- E. Lerche
- F. Auriemma
- C.D. Challis
- A. Chomiczewska
- A. Dal Molin
- J. Eriksson
- J. Garcia
- J. Hobirk
- I. Ivanova-Staknik
- Ph. Jacquet
- A. Kappatou
- Y. Kazakov
- D. Keeling
- D.B. King
- V. Kiptily
- K. Kirov
- D. Kos
- R. Lorenzini
- E. De La Luna
- C.F. Maggi
- J. Mailloux
- P. Mantica
- M. Marin
- G. Matthews
- I. Monakhov
- M. Nocente
- G Pucella
- D. Rigamonti
- F. Rimini
- S. Saarelma
- Z. Stancar
- H. Sun
- M. Tardocchi
- D. Van Eester
- JET contributors
In JET deuterium-tritium (D-T) plasmas, the fusion power is produced through thermonuclear reactions and reactions between thermal ions and fast particles generated by neutral beam injection (NBI) heating or accelerated by electromagnetic wave heating in the ion cyclotron range of frequencies (ICRF). To complement the experiments with 50/50 D/T …
- Preprint
- Published
UKAEA-CCFE-PR(23)1212023

"Overview of interpretive modelling of fusion performance in JET DTE2 discharges with TRANSP"
- Ž. Štancar
- K. Kirov
- F. Auriemma
- H.-T. Kim
- M. Poradzinski
- R. Sharma
- R. Lorenzini
- Z. Ghani
- M. Gorelenkova
- F. Poli
- A. Boboc
- S. Brezinsek
- P. Carvalho
- F. J. Casson
- C. Challis
- E. Delabie
- D. Van Eester
- M. Fitzgerald
- J. M. Fontdecaba
- J. Garcia
- L. Garzotti
- C. Giroud
- A. Kappatou
- Y. Kazakov
- D. King
- V. Kiptily
- D. Kos
- E. Lerche
- E. Litherland-Smith
- C. Maggi
- P. Mantica
- M. J. Mantsinen
- M. Maslov
- S. Menmuir
- M. Nocente
- J. Oliver
- S. Sharapov
- P. Siren
- E. R. Solano
- H. J. Sun
- G. Szepesi
- JET Contributors
In the paper we present an overview of interpretive modelling of a database of JET-ILW 2021 D-T discharges using the TRANSP code. Our main aim is to assess our capability of computationally reproducing the fusion performance of various D-T plasma scenarios using different external heating and D-T mixtures, and understand the performance driving mec…
- Published
UKAEA-CCFE-PR(23)022023

"Unambiguous observation of toroidal Alfven eigenmode driven by alpha particles in the Joint European Torus deuterium-tritium experiments"
- M. Fitzgerald
- R. Dumont
- D. Keeling
- J. Mailloux
- S. Sharapov
- M. Dreval
- A. Figueiredo
- R. Coelho
- J. Ferreira
- P. Rodrigues
- F. Nabais
- D. Borba
- Ž. Štancar
- G. Szepesi
- R.A. Tinguely
- N Fil
- P.G. Puglia
- H.J.C. Oliver
- V. Kiptily
- M. Baruzzo
- M. Lennholm
- P. Siren
- J. Garcia
- C.F. Maggi
A toroidal Alfven eigenmode (TAE) has been observed driven by alpha particles in the Joint European Torus (JET). The observation was made in dedicated deuterium-tritium experiments where radio-frequency (RF) heating was absent, in the so-called “afterglow” period when neutral beam heating was removed. Agreement with reduced and perturbative mod…
- Preprint

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