Plasma and Fusion Research

Volume 17, 2402034 (2022)

Regular Articles

ICRF Plasma Production with the W7-X Like Antenna in the Uragan-2M Stellarator

Yurii V. KOVTUN¹⁾, Vladimir E. MOISEENKO^1,2), Alexei V. LOZIN¹⁾, Rostislav O. PAVLICHENKO¹⁾, Anatolii N. SHAPOVAL¹⁾, Liudmila I. GRIGOR'EVA¹⁾, Demian I. BARON¹⁾, Mykhailo M. KOZULYA¹⁾, Sergii M. MAZNICHENKO¹⁾, Valerii B. KOROVIN¹⁾, Egor D. KRAMSKOY¹⁾, Mykola V. ZAMANOV¹⁾, Yevgen V. SIUSKO¹⁾, Aleksandr Yu. KRASIUK¹⁾, Vladislav S. ROMANOV¹⁾, Igor E. GARKUSHA^1,2), Tom WAUTERS³⁾, Arturo ALONSO⁴⁾, Rudolf BRAKEL⁵⁾, Andreas DINKLAGE⁵⁾, Dirk HARTMANN⁵⁾, Yevgen KAZAKOV⁶⁾, Heinrich LAQUA⁵⁾, Samuel LAZERSON⁵⁾, Josef ONGENA⁶⁾, Henning THOMSEN⁵⁾, Golo FUCHERT⁵⁾, Torsten STANGE⁵⁾, Shuji KAMIO⁷⁾ and the Uragan-2M Team

1): Institute of Plasma Physics of the NSC KIPT, Kharkiv, Ukraine
2): V.N. Karazin Kharkiv National University, Kharkiv, Ukraine
3): ITER Organization, St. Paul-lez-Durance, France
4): Laboratorio Nacional de Fusion, CIEMAT, Madrid, Spain
5): Max-Planck-Institut für Plasmaphysik, Greifswald, Germany
6): Laboratory for Plasma Physics, ERM/KMS, Brussels, Belgium
7): National Institute for Fusion Science, Toki, 509-5292 Japan

(Received 9 January 2022 / Accepted 21 February 2022 / Published 22 April 2022)

Abstract

The results of the plasma start-up with ICRH of U-2M RF discharges in H₂+He mixture with newly implemented controlled gas H₂ concentration are presented. The W7-X like ICRH antenna operated in monopole phasing with applied RF power of ∼ 100 kW. We investigated plasma start-up in the pressure range p = 6×10⁻⁴ - 9×10⁻² Pa. Plasma production with an average density of up to N_e ∼ 10¹³ cm⁻³ was observed at frequencies the fundamental harmonic of the hydrogen cyclotron frequency.

Keywords

plasma production, ion cyclotron heating, stellarator, Uragan-2M, RF power

DOI: 10.1585/pfr.17.2402034

Full Text

PDF format (752Kbytes) PDF Download

References

[1] European Research Roadmap to the Realisation of Fusion Energy (Programme Manager, EUROfusion, Garching/Munich, Germany, 2018).
[2] T. Klinger et al., Nucl. Fusion 59, 112004 (2019).
[3] G. Grieger et al., Phys. Fluids B 4, 2081 (1992).
[4] E. Ascasíbar et al., Nucl. Fusion 59, 112019 (2019).
[5] V.E. Moiseenko et al., J. Plasma Phys. 86, 905860517 (2020).
[6] J. Ongena et al., Phys. Plasmas 21, 061514 (2014).
[7] J. Ongena et al., AIP Conf. Proc. 2254, 070003 (2020).
[8] D.A. Castano Bardawil et al., Fusion Eng. Des. 166, 112205 (2021).
[9] M. Endler et al., Fusion Eng. Des. 167, 112381 (2021).
[10] N.B. Marushchenko et al., EPJ Web Conf. 203, 01006 (2019).
[11] D. Gradic et al., Nucl. Fusion 55, 033002 (2015).
[12] A.V. Lozin et al., Probl. At. Sci. Technol. Ser.: Plasma Phys. 6, 10 (2020).
[13] S. Kamio et al., Nucl. Fusion 61, 114004 (2021).
[14] V. Bykov et al., Fusion Technol. 17, 140 (1990).
[15] O.S. Pavlichenko, Plasma Phys. Control. Fusion 35, B223 (1993).
[16] A.V. Lozin et al., Probl. At. Sci. Technol. Ser.: Plasma Phys. 4, 195 (2021).
[17] V.B. Korovin and E.D. Kramskoy, Probl. At. Sci. Technol. Ser.: Plasma Phys. 6, 19 (2012).
[18] R.O. Pavlichenko et al., Probl. At. Sci. Technol. Ser.: Plasma Phys. 1, 257 (2017).
[19] A. Kramida et al., NIST Atomic Spectra Database (ver. ver. 5.7.1), (2019).
[20] H.R. Griem, Principles of Plasma Spectroscopy (Cambridge University Press, 1997).
[21] I.D. Latimer et al., J. Quant. Spectrosc. Radiat. Transf. 10, 629 (1970).
[22] V.G. Konovalov et al., Probl. At. Sci. Technol. Ser.: Plasma Phys. 4, 53 (2002).