Перегляд за автором "Pavlichenko, R.O."

Сортувати за: Порядок: Результатів:

  • A high speed 140 ghz microwave interferometer for density fluctuation measurements in Uragan-2M stellarator 
    Pavlichenko, R.O.; Zamanov, N.V.; Kulaga, A.E.; Uragan-2M team (Вопросы атомной науки и техники, 2018)
    The operation of the 2 mm microwave superheterodyne interferometer, which allows to measure the linear electron density (average over the line of sight through the plasma) at the Uragan-2M stellarator is presented. ...
  • Amplification of the runaway electrons flow in the Uragan-3М torsatron 
    Tarasov, I.K.; Tarasov, M.I.; Sitnikov, D.A.; Korovin, V.B.; Lozin, A.V.; Mironov, Yu.K.; Romanov, V.S.; Pavlichenko, R.O.; Zamanov, N.V.; Kulaga, A.G.; Shapoval, A.N.; Makhov, M.M.; Goncharov, I.G.; Listopad, V.M.; Lymar, N.V.; Gnidenko, N.V. (Вопросы атомной науки и техники, 2018)
    In this work the results of amplification of the runaway electrons flow and interaction runaway electrons with RF-heating wave on the Uragan-3M torsatron are presented. Results described in the article confirm using ...
  • Behavior of suprathermal electrons at the Uragan-3M torsatron after RF heating off 
    Zamanov, N.V.; Pavlichenko, R.O.; Kulaga, A.E. (Вопросы атомной науки и техники, 2016)
    For the past decades the microwave radiometry is a routinely used diagnostics to obtain the information on temporal evolution and radial profile of the bulk electron temperature at Uragan-3M torsatron plasma experiments ...
  • Behaviour of the radiation of the suprathermal electrons at the Uragan-3M torsatron after RF heating off from ECE measurements 
    Zamanov, N.V.; Pavlichenko, R.O.; Kulaga, A.E.; Grigo’eva, L.I.; Chechkin, V.V.; Shapoval, A.N.; Makhov, M.M.; Mironov, Yu.K.; Romanov, V.S.; Tarasov, I.K.; Sitnikov, D.A.; Pavlichenko, O.S. (Вопросы атомной науки и техники, 2015)
    The microwave radiometry is a well-known diagnostics to obtain the information on temporal evolution and radial profile of the electron temperature at U-3M torsatron plasma experiments. However, under low plasma density ...
  • Characteristic properties of the three-half-turn-antenna-driven RF discharge in the Uragan-3M torsatron 
    Chechkin, V.V.; Grigor’eva, L.I.; Grekov, D.L.; Pavlichenko, R.O.; Lozin, A.V.; Kasilov, A.A.; Beletskii, A.A.; Kozulya, M.M.; Kulaga, A.Ye.; Zamanov, N.V.; Tarasov, I.K.; Mironov, Yu.K.; Romanov, V.S.; Voitsenya, V.S. (Вопросы атомной науки и техники, 2014)
    In the λ = 3 Uragan-3M torsatron hydrogen plasma is heated by RF fields in the Ålfven range of frequencies (ω≤ωсi). Plasma with the mean density ‾ne units of 10¹² сm⁻³ is produced by the frame antenna and used as an initial ...
  • Compact corrugatеd horn antenna initial design for microwave diagnostics in Uragan-2M stellarator 
    Pavlichenko, R.O.; Pavlichenko, N.I. (Problems of Atomic Science and Technology, 2023)
    In this paper, a well-known design procedure is proposed for the design of wideband constant-beam width conical corrugated horn antennas, with minimum design and construction complexity. The inputs to the procedure are the ...
  • Confinement physics of the LHD plasma and its future prospect 
    Yamazaki, K.; Ashikawa, N.; de Vries, P.; Emoto, M.; Funaba, H.; Goto, M.; Ida, K.; Idei, H.; Ikeda, K.; Inagaki, S.; Inoue, N.; Isobe, M.; Kado, S.; Kaneko, O.; Kawahata, K.; Khlopenkov, K.; Komori, A.; Kubo, S.; Kumazawa, R.; Masuzaki, S.; Minami, T.; Miyazawa, J.; Morisaki, T.; Morita, S.; Murakami, S.; Muto, S.; Mutoh, T.; Nagayama, Y.; Nakamura, Y.; Nakanishi, H.; Narihara, K.; Narushima, Y.; Nishimura, K.; Noda, N.; Notake, T.; Kobuchi, T.; Liang, Y.; Ohdachi, S.; Ohyabu, N.; Oka, Y.; Osakabe, M.; Ozaki, T.; Pavlichenko, R.O.; Peterson, B.J.; Sagara, A.; Saito, K.; Sakakibara, S.; Sakamoto, R.; Sasao, H.; Sasao, M.; Sato, K.; Sato, M.; Seki, T.; Shimozuma, T.; Shoji, M.; Suzuki, H.; Takechi, M.; Takeiri, Y.; Tamura, N.; Tanaka, K.; Toi, K.; Tokuzawa, T.; Torii, Y.; Tsumori, K.; Yamada, H.; Yamada, I.; Yamaguchi, S.; Yamamoto, S.; Yokoyama, M.; Yoshimura, Y.; Watanabe, K.Y.; Watari, T.; Itoh, K.; Matsuoka, K.; Ohkubo, K.; Ohtake, I.; Satow, T.; Sudo, S.; Uda, T.; Motojima, O.; Hamada, Y.; Fujiwara, M. (Вопросы атомной науки и техники, 2000)
  • Control of the runaway electron flow in torsatron 
    Moiseenko, V.E.; Tarasov, I.K.; Tarasov, M.I.; Sitnikov, D.A.; Korovin, V.B.; Komarov, A.D.; Kozachek, A.S.; Krupnik, L.I.; Zhezhera, A.I.; Pavlichenko, R.O.; Zamanov, N.V.; Kulaga, A.Ye.; Shapoval, A.N.; Lytova, M.A.; Maznichenko, S.M.; Solodovchenko, S.I.; Shtan', A.F. (Вопросы атомной науки и техники, 2014)
    The possibilities of stimulation and complete suppression of the runaway electrons flow in the experiments at Uragan-2M setup were investigated. The flow stimulation was carried out by producing additional free charged ...
  • Development of renewed waweguide system for microwave diagnostics in Uragan-2M stellarator 
    Pavlichenko, R.O.; Zamanov, M.V. (Problems of Atomic Science and Technology, 2022)
    This paper presents initial proposal for the development of quasi-optical (QO) microwave technology for Electron Cyclotron Emission (ECE) and reflectometry diagnostics in the Uragan-2M (U-2M) stellarator. For the existed ...
  • Distribution of 0.2…4.5 keV plasma ions in set of U-2M discharges 
    Slavnyj, A.S.; Pavlichenko, R.O.; Shapoval, A.N.; Makhov, M.N.; Dreval, M.B. (Вопросы атомной науки и техники, 2021)
    Charge exchange (CX) neutral fluxes were measured by neutral particle analyzer (NPA) in plasma discharges sustained by the W7-X-like radio frequency (RF) antenna in the Uragan-2M (U-2M) stellarator. CX fluxes in pure ...
  • First measurements of line electron density in Uragan-2M plasmas via 140 GHz heterodyne interferometer 
    Pavlichenko, R.O.; Zamanov, N.V.; Kulaga, A.E. (Вопросы атомной науки и техники, 2017)
    Commissioned a microwave 2 mm (140 GHz) superheterodyne interferometer, which allows to start the measurement of linear (average over the length of the chord passing through the plasma) of the electron density at the ...
  • Influence of movable B₄C-limiter on characteristics of RF discharge plasma in the Uragan-2M torsatron 
    Glazunov, G.P.; Lozin, A.V.; Konotopskiy, A.L.; Baron, D.I.; Beletskii, A.A.; Bondarenko, M.N.; Chechkin, V.V.; Dreval, M.B.; Grigor’eva, L.I.; Kozulya, M.M.; Maznichenko, S.M.; Moiseenko, V.E.; Mironov, Yu.K.; Pavlichenko, R.O.; Romanov, V.S.; Shapoval, A.N. (Вопросы атомной науки и техники, 2019)
    A variant of the B₄C movable biased pumped limiter for the Uragan-2M torsatron is described. Some results of experiments with the limiter moved from the vacuum chamber wall to the central region of the plasma column in the ...
  • Influence of suprathermal electrons on ECE measurements in the Uragan-3M torsatron 
    Pavlichenko, R.O. (Вопросы атомной науки и техники, 2015)
    Electron cyclotron emission (ECE) diagnostic (superheterodyne millimeter wave radiometer) is a regular tool to provide the radial distribution and time dependence for a bulk electron population for the Uragan-3M (U-3M) ...
  • Influence of working gas pulse injection and fluctuations of the magnetic field on the runaway electrons dynamics in Uragan-3M 
    Tarasov, I.K.; Tarasov, M.I.; Sitnikov, D.A.; Korovin, V.B.; Lozin, A.V.; Shapoval, A.N.; Makhov, M.M.; Mironov, Yu.K.; Romanov, V.S.; Pavlichenko, R.O.; Zamanov, N.V.; Kulaga, A.G.; Goncharov, I.G.; Listopad, V.M.; Lymar, N.V.; Gnidenko, N.V. (Вопросы атомной науки и техники, 2019)
    Generation of runaway electrons in fusion experiments can drive to serious damage of plasma devices components. Injection of gas with a large mass number decreases the generation processes. Also, magnetic perturbations ...
  • Low frequency oscillations in U-2M conditioning RF discharges 
    Dreval, M.B.; Shapoval, A.M.; Beletskii, A.A.; Pavlichenko, R.O.; Ozherel’yev, F.I.; Makhov, M.M. (Вопросы атомной науки и техники, 2018)
    MHD oscillations were studied in low magnetic field (B₀ = 0.01 T) radio frequency discharges of the URAGAN-2M (U-2M) stellarator. Coherent oscillations are observed by bolometers, triple Langmuir probe microwave ...
  • New quasioptical receiving system for electron cyclotron emission diagnostics in Uragan-3M stellarator 
    Pavlichenko, R.O. (Вопросы атомной науки и техники, 2014)
    A new electron cyclotron emission antenna was designed to be installed outside of Uragan-3M vacuum tank. The system will be utilizing different diagnostic port to minimize the length of the output microwave beam. Its design ...
  • Observation of 1…20 kHz fluctuations in the Uragan-2M torsatron 
    Dreval, M.B.; Pavlichenko, R.O.; Shapoval, A.M.; Ozherelyev, F.I.; Mironov, Yu.K.; Romanov, V.S.; Makhov, M.M.; Zamanov, N.V.; Kulaga, A.E. (Вопросы атомной науки и техники, 2016)
    First observations of plasma fluctuations in the frequency range of 1…20 kHz in various plasma conditions of the URAGAN-2M (U-2M) torsatron are presented. Observed fluctuations of the Hα emissivity are coherent with the ...
  • Peculiarities of the radiometric measurements on Uragan-3M torsatron for RF heated plasma 
    Pavlichenko, R.O.; Kulaga, A.E.; Zamanov, N.V.; Pavlichenko, O.S. (Вопросы атомной науки и техники, 2011)
    Frequency spectrum (radial profile) of X-mode second harmonic electron cyclotron emission was observed for optically thin plasma produced by Alfvén resonance heating in Uragan-3M torsatron. Radial electron temperature profile ...
  • Peripheral plasma characteristics in the Uragan-3M torsatron 
    Kasilov, A.A.; Grigor’eva, L.I.; Chechkin, V.V.; Beletskii, A.A.; Pavlichenko, R.O.; Lozin, A.V.; Kozulya, M.M.; Kulaga, A.Ye.; Zamanov, N.V.; Mironov, Yu.K.; Romanov, V.S.; Voitsenya, V.S. (Вопросы атомной науки и техники, 2015)
    In the l=3/m=9 Uragan-3M (U-3M) torsatron a hydrogen plasma is produced and heated by RF fields in the Alfvén range of frequencies (ω≤ωci). Peripheral plasma is investigated using two moveable Langmuir probes. Spatial ...
  • Radio-frequency plasma start-up at Uragan-3M stellarator 
    Moiseenko, V.E.; Lyssoivan, A.; Wauters, T.; Tripský, M.; Lozin, A.V.; Pavlichenko, R.O.; Kozulya, M.M.; Dreval, M.B.; Mironov, Yu.K.; Romanov, V.S.; Kulaga, A.Ye.; Zamanov, N.V.; Shapoval, A.N.; Konovalov, V.G.; Chechkin, V.V.; Grigor’eva, L.I.; Beletskii, A.A.; Kasilov, A.A.; Garkusha, I.E. (Вопросы атомной науки и техники, 2017)
    A double frame antenna with a broad spectrum of parallel wavenumbers (with respect to the magnetic field) is used for radio-frequency (RF) plasma production in Uragan-3M stellarator type device. The delay between the start ...