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Träfflista för sökning "WFRF:(Giacomelli Luca) "

Search: WFRF:(Giacomelli Luca)

  • Result 41-50 of 71
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44.
  • Krasilnikov, A., et al. (author)
  • Evidence of 9 Be + p nuclear reactions during 2ω CH and hydrogen minority ICRH in JET-ILW hydrogen and deuterium plasmas
  • 2018
  • In: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 58:2
  • Journal article (peer-reviewed)abstract
    • The intensity of 9Be + p nuclear fusion reactions was experimentally studied during second harmonic (2ω CH) ion-cyclotron resonance heating (ICRH) and further analyzed during fundamental hydrogen minority ICRH of JET-ILW hydrogen and deuterium plasmas. In relatively low-density plasmas with a high ICRH power, a population of fast H+ ions was created and measured by neutral particle analyzers. Primary and secondary nuclear reaction products, due to 9Be + p interaction, were observed with fast ion loss detectors, γ-ray spectrometers and neutron flux monitors and spectrometers. The possibility of using 9Be(p, d)2α and 9Be(p, α)6Li nuclear reactions to create a population of fast alpha particles and study their behaviour in non-active stage of ITER operation is discussed in the paper.
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45.
  • Labit, B., et al. (author)
  • Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade
  • 2019
  • In: Nuclear Fusion. - : IOP Publishing. - 1741-4326 .- 0029-5515. ; 59:8
  • Journal article (peer-reviewed)abstract
    • © 2019 Institute of Physics Publishing. All rights reserved. Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (ne,sep/nG ∼ 0.3), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened.
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49.
  • Murari, A., et al. (author)
  • A control oriented strategy of disruption prediction to avoid the configuration collapse of tokamak reactors
  • 2024
  • In: Nature Communications. - 2041-1723 .- 2041-1723. ; 15:1
  • Journal article (peer-reviewed)abstract
    • The objective of thermonuclear fusion consists of producing electricity from the coalescence of light nuclei in high temperature plasmas. The most promising route to fusion envisages the confinement of such plasmas with magnetic fields, whose most studied configuration is the tokamak. Disruptions are catastrophic collapses affecting all tokamak devices and one of the main potential showstoppers on the route to a commercial reactor. In this work we report how, deploying innovative analysis methods on thousands of JET experiments covering the isotopic compositions from hydrogen to full tritium and including the major D-T campaign, the nature of the various forms of collapse is investigated in all phases of the discharges. An original approach to proximity detection has been developed, which allows determining both the probability of and the time interval remaining before an incoming disruption, with adaptive, from scratch, real time compatible techniques. The results indicate that physics based prediction and control tools can be developed, to deploy realistic strategies of disruption avoidance and prevention, meeting the requirements of the next generation of devices.
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  • Result 41-50 of 71
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journal article (53)
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reports (2)
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Type of content
peer-reviewed (54)
other academic/artistic (15)
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Author/Editor
Conroy, Sean (52)
Ericsson, Göran (51)
Hjalmarsson, Anders (49)
Weiszflog, Matthias (38)
Tardocchi, M (35)
Andersson Sundén, Er ... (35)
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Popovichev, S (31)
Goloborod'ko, V (30)
Ongena, J (30)
Bertalot, L (30)
Zhang, W. (29)
Albanese, R (29)
Bilkova, P (29)
Blanchard, P (29)
Bolzonella, T (29)
Brezinsek, S (29)
Buratti, P (29)
Carraro, L (29)
Coelho, R (29)
Coster, D (29)
Cseh, G (29)
Dux, R (29)
Giacomelli, L (29)
Giovannozzi, E (29)
Groth, M (29)
Kappatou, A (29)
Kurki-Suonio, Taina, ... (29)
Likonen, J (29)
Mantica, P (29)
Mazzotta, C (29)
Mlynar, J (29)
Nabais, F (29)
Nocente, M (29)
Orsitto, F (29)
Refy, D (29)
Reiser, D (29)
Rubinacci, G (29)
Salmi, A (29)
Sauter, O (29)
Sousa, J (29)
Strand, Pär, 1968 (29)
Testa, D (29)
Valisa, M (29)
Vega, J (29)
Villone, F (29)
Wauters, T (29)
Wiesen, S (29)
Zagorski, R (29)
Zoletnik, S (29)
Viezzer, E. (29)
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Uppsala University (66)
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Royal Institute of Technology (28)
Karolinska Institutet (5)
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Language
English (63)
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Natural sciences (47)
Engineering and Technology (16)
Medical and Health Sciences (7)

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