Plasma Production in ICRF in the Uragan-2M Stellarator in Hydrogen–Helium Gas Mixture

Moiseenko, V. E.; Kovtun, Yu. V.; Lozin, A.V.; Pavlichenko, R. O.; Shapoval, A. N.; Григорьева, Л.И.; Kozulya, M.M.; Maznichenko, S.M.; Korovin, V.B.; Kramskoy, E.D.; Zamanov, N. V.; Siusko, Y.V.; Baron, D.I.; Krasiuk, A.Yu.; Romanov, V. S.; Garkusha, I.E.; Wauters, T.; Alonso, A.; Brakel, R.; Dinklage, A.; Hartmann, D.; Kazakov, Ye. O.; Laqua, H. P.; Ongena, J.; Stange, T.

doi:10.1007/s10894-022-00326-8

Cited by 6 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plasma production experiments in helium at Uragan-2M have been performed to investigate the role of the hydrogen minority in helium [26]. The experiments presented here were carried on with a controlled minority hydrogen concentration.…”

Section: Plasma Production In Icrf In the Uragan-2m Stellarator In Hy...mentioning

confidence: 99%

Fusion Research in Stellarator Department of Ipp NSC Kipt

Moiseenko¹,

Dreval²,

Kovtun³

et al. 2022

Problems of Atomic Science and Technology

Self Cite

View full text Add to dashboard Cite

This paper briefly describes intrinsic and collaborative scientific activities in the Stellarator Department of the Institute of Plasma Physics of the National Science Center “Kharkov Institute of Physics and Technology” in last two years. These activities include experiments on JET tokamak, stellarators Wendelstein 7-X and Uragan-2M, TOMAS toroidal device and theoretical studies related to modeling of radio-frequency fields in plasma and conceptual development of the stellarator-mirror fission-fusion hybrid.

show abstract

Section: Plasma Production In Icrf In the Uragan-2m Stellarator In Hy...mentioning

confidence: 99%

Fusion Research in Stellarator Department of Ipp NSC Kipt

Moiseenko¹,

Dreval²,

Kovtun³

et al. 2022

Problems of Atomic Science and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was tried at Large Helical Device (LHD) [4]. In present times it is used at the Uragan-2M (U-2M) machine only [5][6][7]. It should be noticed that for big machines the plasma production frequency should be chosen much lower than the ion cyclotron frequency [8].…”

Section: Introductionmentioning

confidence: 99%

“…A scenario of plasma production aimed to use the ICRH equipment had been developed at U-2M [5][6][7] for providing a fully ionized target plasma. The scenario use two-ion component plasma and requires the cyclotron zone for light plasma ions to be present in the plasma confinement volume.…”

Section: Introductionmentioning

confidence: 99%

ICRF plasma production at hydrogen minority regime in LHD

Kovtun,

Kasahara,

Moiseenko

et al. 2023

Nucl. Fusion

Self Cite

View full text Add to dashboard Cite

his study aim is to develop further an ion cyclotron range of frequencies (ICRF) method of plasma production in stellarators based on the minority heating. The previous studies demonstrate production of low density plasma (9.5×1017 m−3) at low power of up to 0.2 MW. The higher ICRF heating power experiments become possible after introducing a programmable ICRF power ramp up at the front of the ICRF pulse. With this trick, all the shots went with the antenna voltage within the safe range. Increase of the ICRF power predictably results in increase of the density of produced plasma. Without pre-ionization the plasma density achieved was 6×1018 m-3 which is 6 times higher than in previous experiments. However, the electron temperature was not high, the light impurities were hot fully stripped, and there were no recombination peaks after termination of the ICRF pulse. Plasma density is too low to provide good conditions for efficient plasma heating. For the reference, the ICRF heating of high density cold plasma prepared by electron cyclotron resonance heating (ECRH) is performed. Both electrons and ions were heated to high temperatures, and this plasma state is sustained. The antenna-plasma coupling was much better which result in larger heating power with the lower antenna voltage.

show abstract