Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session UP11: Poster Session VIII: In-Person, Hall A (2:00-3:30pm) and Virtual Poster Presentations (3:45-5:00pm)
MFE: Whole Device Modeling, High Field Tokamaks, Tokamak Physics, DIII-D
FUND:Reconnection, Turbulence
2:00 PM - 5:00 PM
Thursday, October 20, 2022
Room: Exhibit Hall A and Online
Abstract: UP11.00049 : Energetic ion experiments with three-ion ICRF scenarios in non-active plasmas at JET
Presenter:
Yevgen Kazakov
(Laboratory for Plasma Physics, LPP-ERM/KMS, Brussels, Belgium)
Authors:
Yevgen Kazakov
(Laboratory for Plasma Physics, LPP-ERM/KMS, Brussels, Belgium)
Massimo Nocente
(Dipartimento di Fisica, Università di Milano-Bicocca, Milan, Italy)
Jeronimo Garcia
(CEA, IRFM, Saint-Paul-lez-Durance, France)
Vasili Kiptily
(UKAEA, CCFE, Culham Science Centre, Abingdon, UK)
Jozef Ongena
(Laboratory for Plasma Physics, LPP-ERM/KMS, Brussels, Belgium)
Rui Coelho
(IST, Universidade de Lisboa, Lisbon, Portugal)
Teddy Craciunescu
(National Institute for Laser, Plasma and Radiation Physics, Bucharest, Romania)
Andrea Dal Molin
(Institute for Plasma Science and Technology, CNR, Milan, Italy)
Ephrem Delabie
(Oak Ridge National Laboratory)
Elena De La Luna
(Laboratorio Nacional de Fusión, CIEMAT, Madrid, Spain)
Mykola Dreval
(NSC 'Kharkiv Institute of Physics and Technology', Kharkiv, Ukraine)
Remi Dumont
(CEA, IRFM, Saint-Paul-lez-Durance, France)
Giu Marcer
(Dipartimento di Fisica, Università di Milano-Bicocca, Milan, Italy)
Davide Rigamonti
(Institute for Plasma Science and Technology, CNR, Milan, Italy)
Sergei Sharapov
(UKAEA, CCFE, Culham Science Centre, Abingdon, UK)
Mireille Schneider
(ITER Organization, Route de Vinon-sur-Verdon, St. Paul lez Durance, France)
Paula Siren
(UKAEA, CCFE, Culham Science Centre, Abingdon, UK)
Ziga Stancar
(UKAEA, CCFE, Culham Science Centre, Abingdon, UK)
Hongjuan Sun
(UKAEA, CCFE, Culham Science Centre, Abingdon, UK)
Marco Tardocchi
(Institute for Plasma Science and Technology, CNR, Milan, Italy)
Henri Weisen
(Swiss Plasma Center, EPFL, Lausanne, Switzerland)
. JET Contributors
(See the author list of J. Mailloux et al., Nucl. Fusion 62, 042026 (2022))
Collaboration:
JET Contributors
In this contribution, we also report on the successful application of the three-ion 9Be/22Ne/Ar-(4He)-H ICRF scheme at JET. This scenario makes use of intrinsic 9Be (Z/A ≈ 0.44) and extrinsic impurities with a similar charge-to-mass ratio, e.g. 22Ne and Ar (Z/A ≈ 0.45), to optimize the efficiency of ICRF absorption by a small amount of 4He ions in hydrogen plasmas [3]. JET experimental results confirm that an additional injection of a very small amount of 22Ne impurities is beneficial for maximizing the population of MeV-range 4He ions with ICRF in the plasma (n(4He)/ne ≈ 0.5%), as evidenced by gamma-ray spectroscopy [7]. In the absence of a direct control of the level of 9Be impurities, an additional seeding of 22Ne or Ar impurities is a promising technique that can be also applied in future ITER plasmas.
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