All Papers - UKAEA Scientific Publications

Showing 1 - 10 of 10 UKAEA Paper Results

UKAEA-CCFE-PR(23)1812023

"isotope physics of heat and particle transport with tritium in JET-ILW H-mode plasmas"
During the DTE2 campaign in the JET tokamak we performed a parameter scan in T and D-T complementing existing pulses in H and D. For the different main ion masses H-modes at fixed plasma current and magnetic field can have the pedestal pressure varying by a factor of 4 and the total pressure changing from betaN = 1.0 to 3.0. Based on this wide data…
- Preprint
- Published
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)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
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(22)092022

"THE DEPENDENCE OF CONFINEMENT ON THE ISOTOPE MASS IN THE CORE AND THE EDGE OF AUG AND JET-ILW H-MODE PLASMAS"
Experiments in ASDEX Upgrade (AUG) and JET with the ITER-like wall (JET-ILW) are performed to separate the pedestal and core contributions to confinement in H-modes with different main ion masses. A strong isotope mass dependence in the pedestal is found which is enhanced at high gas puffing. This is because the ELM type changes when going fro…
- Preprint
- Published
UKAEA-CCFE-CP(23)132021

"High Performance ITER-baseline discharges in Deuterium with nitrogen and neon-seeding in the JET-ILW"
- C. Giroud
- S. Brezinsek
- R. Pitts
- I.S. Carvalho
- A. Huber
- E. Kaveeva
- D. Keeling
- J. Mailloux
- S. Aleiferis
- B. Chapman
- S. Henderson
- L. Garzotti
- E. Lerche
- M. MArin
- M. Maslov
- M. Brix
- P. Carvalho
- I. Coffey
- J. Fontdecaba
- L. Horvath
- I. Jepu
- J. Karhunen
- E. Litherland-Smith
- A. Meigs
- R.B. Morales
- T. Pereira
- D. Refy
- Z. Stancar
- M. Sertoli
- S. Silburn
- G. Szepesi
- A. Thorman
- M. Tomes
- I. Veselova
- B. Viola
- S. Wiesen
- JET contributors,
JET has investigated one the key issues for the baseline scenario in ITER, the integration of a radiative divertor for heat load control with the use of neon and nitrogen as seed impurity. A characterization of the choice of the impurity seed on plasma confinement, neutrons, pedestal MHD stability, pedestal instabilities, core transport is given…
- Preprint
UKAEA-CCFE-PR(21)472021

"Visible spectroscopy of highly charged tungsten ions with the JET charge exchange diagnostic"
Visible emission from a broad range of tungsten charge states has complicated plasma ion temperature and toroidal rotation measurements on the JET tokamak since the installation of the ITER-like wall. A plethora of charge exchange emission lines from ions up to W 56+ and 21 suspected magnetic dipole emission lines have so far been observed. In p…
- Preprint
- Published
UKAEA-CCFE-PR(19)792019

"The dependence of exhaust power components on edge gradients in JET-C and JET-ILW H-mode plasmas"
The exhaust (loss) power components due to ELMs, radiation and heat transport across the edge transport barrier (ETB) between ELMs are quantifed for H-mode plasmas in JET-C and JET-ILW to provide data for comparison with simulations of pedestal heat transport. In low-current, JET-ILW pulses with a low rate of gas fuelling, the pedestal heat tran…
- Preprint
- Published
UKAEA-CCFE-CP(20)982018

"Optimization of JET-DT and ITER operation by developing an understanding of the role of low-Z impurity on the H-mode pedestal"
- C. Giroud
- N. Aiba
- F. Militello
- C. Challis
- A. Chankin
- B. Lomanowski
- D. Hatch
- J. Harrison
- D. Frigione
- D. Moulton
- S. Pamela
- F. Parra
- J. Parisi
- I. Putzai
- D. Refy
- S. Saarelma
- C. Stavrou
- B. Tal
- E. Belonohy
- S. Brezinsek
- S. Buller
- C. Bowman
- E. Delabie
- A. Field
- J. Fontdecaba
- A. Huber
- A. Meigs
- S. Menmuir
- J. Simpson
- JET Contributors
- Preprint
- Published
UKAEA-CCFE-PR(19)252019

"Control of H:D isotope mixture with pellets in JET"
- Martin 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
- Published

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