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Sökning: WFRF:(Eriksson Jacob Dr 1985 ) > Konferensbidrag

  • Resultat 1-3 av 3
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1.
  • Pawelec, E., et al. (författare)
  • Molecular ND Band Spectroscopy in the Divertor Region of Nitrogen Seeded JET Discharges
  • 2018
  • Ingår i: International Conferences On Research And Applications Of Plasmas (Plasma-2017). - : IOP Publishing. ; , s. 012009-
  • Konferensbidrag (refereegranskat)abstract
    • In this contribution we present OES measurements in the JET tokamak of the deuterated NH (ND) radical and the correlation between results of those experiments and measurement of ammonia production. The observation region covers most of the divertor and its outer throat. Measurements are performed in different magnetic configurations. The results include temporal and spatial dependence of the molecular emission intensity and study of the emission band shape (vibrational and rotational temperatures) during different JET pulses, with or without nitrogen seeding. Results are a step towards the understanding of nitrogen-containing molecule creation and destruction in the divertor plasma.
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2.
  • Widdowson, A., et al. (författare)
  • Experience of handling beryllium, tritium and activated components from JET ITER like wall
  • 2016
  • Ingår i: Physica Scripta. - : Institute of Physics Publishing (IOPP). ; T167
  • Konferensbidrag (refereegranskat)abstract
    • JET components are removed periodically for surface analysis to assess material migration and fuel retention. This paper describes issues related to handling JET components and procedures for preparing samples for analysis; in particular a newly developed procedure for cutting beryllium tiles is presented. Consideration is also given to the hazards likely due to increased tritium inventory and material activation from 14 MeV neutrons following the planned TT and DT operations (DTE2) in 2017. Conclusions are drawn as to the feasibility of handling components from JET post DTE2.
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3.
  • Kirov, K. K., et al. (författare)
  • Synergistic ICRH and NBI Heating for Fast Ion Generation and Maximising Fusion Rate in Mixed Plasmas at JET
  • 2020
  • Ingår i: 23rd topical conference on radiofrequency power in plasmas. - : AIP Publishing. - 9780735420137
  • Konferensbidrag (refereegranskat)abstract
    • The studies of recent JET experiments in H/D approximate to 0.85/0.15 plasma (2.9T/2MA) in which neutron rate was enhanced by applying 2.5MW of ICRH using D-(D-NBI)-H three-ion scheme are reported. An extensive analysis of this novel heating scenario has been carried out by means of integrated TRANSP/TORIC modelling, and a comprehensive validation of the computed Fast Ion Distribution Function (FI DF) with a range of fast ion diagnostics available at JET is presented. The predicted acceleration of D Neutral Beam Injection (NBI) ions beyond their injection energies and the associated changes in FI DF by RF waves are found to be in good agreement with measured neutron yield and TOFOR neutron spectrometer measurements, as well as with multi-channel neutron camera observations and neutral particle analyser diagnostic. An outlook of the possible applications of the developed technique for future DTE2 studies on JET has been highlighted. Controlled acceleration of TNBI ions in D-rich and DNBI ions in T-rich plasmas to optimal energies can be applied to maximise BT fusion rates and contribute to the success of future DT experiments at JET and ITER as illustrated in this study.
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  • Resultat 1-3 av 3

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