4 results on '"N.V. Stupishin"'
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2. Studies of ion and neutral beam physics and technology at the Budker Institute of Nuclear Physics SB RAS
- Author
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Yu.I. Belchenko, V.I. Davydenko, P.P. Deichuli, I.S. Emelev, Alexander A. Ivanov, V.V. Kolmogorov, S.G. Konstantinov, A.A. Krasnov, S.S. Popov, Andrei L. Sanin, A.V. Sorokin, N.V. Stupishin, I.V. Shikhovtsev, A.V. Kolmogorov, M.G. Atlukhanov, G.F. Abdrashitov, A.N. Dranichnikov, V.A. Kapitonov, and A.A. Kondakov
- Subjects
010302 applied physics ,0103 physical sciences ,General Physics and Astronomy ,01 natural sciences ,010305 fluids & plasmas - Published
- 2018
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3. Overview of results from the MST reversed field pinch experiment
- Author
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J.S. Sarff, A.F. Almagri, J.K. Anderson, M. Borchardt, D. Carmody, K. Caspary, B.E. Chapman, D.J. Den Hartog, J. Duff, S. Eilerman, A. Falkowski, C.B. Forest, J.A. Goetz, D.J. Holly, J.-H. Kim, J. King, J. Ko, J. Koliner, S. Kumar, J.D. Lee, D. Liu, R. Magee, K.J. McCollam, M. McGarry, V.V. Mirnov, M.D. Nornberg, P.D. Nonn, S.P. Oliva, E. Parke, J.A. Reusch, J.P. Sauppe, A. Seltzman, C.R. Sovinec, H. Stephens, D. Stone, D. Theucks, M. Thomas, J. Triana, P.W. Terry, J. Waksman, W.F. Bergerson, D.L. Brower, W.X. Ding, L. Lin, D.R. Demers, P. Fimognari, J. Titus, F. Auriemma, S. Cappello, P. Franz, P. Innocente, R. Lorenzini, E. Martines, B. Momo, P. Piovesan, M. Puiatti, M. Spolaore, D. Terranova, P. Zanca, V. Belykh, V.I. Davydenko, P. Deichuli, A.A. Ivanov, S. Polosatkin, N.V. Stupishin, D. Spong, D. Craig, R.W. Harvey, M. Cianciosa, J.D. Hanson, Sarff, J, Almagri, A, Anderson, J, Borchardt, M, Carmody, D, Caspary, K, Chapman, B, Den Hartog, D, Duff, J, Eilerman, S, Falkowski, A, Forest, C, Goetz, J, Holly, D, Kim, J, King, J, Ko, J, Koliner, J, Kumar, S, Lee, J, Liu, D, Magee, R, Mccollam, K, Mcgarry, M, Mirnov, V, Nornberg, M, Nonn, P, Oliva, S, Parke, E, Reusch, J, Sauppe, J, Seltzman, A, Sovinec, C, Stephens, H, Stone, D, Theucks, D, Thomas, M, Triana, J, Terry, P, Waksman, J, Bergerson, W, Brower, D, Ding, W, Lin, L, Demers, D, Fimognari, P, Titus, J, Auriemma, F, Cappello, S, Franz, P, Innocente, P, Lorenzini, R, Martines, E, Momo, B, Piovesan, P, Puiatti, M, Spolaore, M, Terranova, D, Zanca, P, Belykh, V, Davydenko, V, Deichuli, P, Ivanov, A, Polosatkin, S, Stupishin, N, Spong, D, Craig, D, Harvey, R, Cianciosa, M, and Hanson, J
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MST ,Nuclear and High Energy Physics ,Physics::Plasma Physics ,RFP ,reversed field pinch ,Condensed Matter Physics - Abstract
An overview of recent results from the MST programme on physics important for the advancement of the reversed field pinch (RFP) as well as for improved understanding of toroidal magnetic confinement more generally is reported. Evidence for the classical confinement of ions in the RFP is provided by analysis of impurity ions and energetic ions created by 1 MW neutral beam injection (NBI). The first appearance of energetic-particle-driven modes by NBI in a RFP plasma is described. MST plasmas robustly access the quasi-single-helicity state that has commonalities to the stellarator and 'snake' formation in tokamaks. In MST the dominant mode grows to 8% of the axisymmetric field strength, while the remaining modes are reduced. Predictive capability for tearing mode behaviour has been improved through nonlinear, 3D, resistive magnetohydrodynamic computation using the measured resistivity profile and Lundquist number, which reproduces the sawtooth cycle dynamics. Experimental evidence and computational analysis indicates two-fluid effects, e.g., Hall physics and gyro-viscosity, are needed to understand the coupling of parallel momentum transport and current profile relaxation. Large Reynolds and Maxwell stresses, plus separately measured kinetic stress, indicate an intricate momentum balance and a possible origin for MST's intrinsic plasma rotation. Gyrokinetic analysis indicates that micro-tearing modes can be unstable at high beta, with a critical gradient for the electron temperature that is larger than for tokamak plasmas by roughly the aspect ratio.
- Published
- 2013
- Full Text
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4. Overview of results from the MST reversed field pinch experiment
- Author
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J.S. Sarff, A.F. Almagri, J.K. Anderson, M. Borchardt, W. Cappechi, D. Carmody, K. Caspary, B.E. Chapman, D.J. Den Hartog, J. Duff, S. Eilerman, A. Falkowski, C.B. Forest, M. Galante, J.A. Goetz, D.J. Holly, J. Koliner, S. Kumar, J.D. Lee, D. Liu, K.J. McCollam, M. McGarry, V.V. Mirnov, L. Morton, S. Munaretto, M.D. Nornberg, P.D. Nonn, S.P. Oliva, E. Parke, M.J. Pueschel, J.A. Reusch, J. Sauppe, A. Seltzman, C.R. Sovinec, D. Stone, D. Theucks, M. Thomas, J. Triana, P.W. Terry, J. Waksman, G.C. Whelan, D.L. Brower, W.X. Ding, L. Lin, D.R. Demers, P. Fimognari, J. Titus, F. Auriemma, S. Cappello, P. Franz, P. Innocente, R. Lorenzini, E. Martines, B. Momo, P. Piovesan, M. Puiatti, M. Spolaore, D. Terranova, P. Zanca, V.I. Davydenko, P. Deichuli, A.A. Ivanov, S. Polosatkin, N.V. Stupishin, D. Spong, D. Craig, H. Stephens, R.W. Harvey, M. Cianciosa, J.D. Hanson, B.N. Breizman, M. Li, L.J. Zheng, Sarff, J, Almagri, A, Anderson, J, Borchardt, M, Cappechi, W, Carmody, D, Caspary, K, Chapman, B, Den Hartog, D, Duff, J, Eilerman, S, Falkowski, A, Forest, C, Galante, M, Goetz, J, Holly, D, Koliner, J, Kumar, S, Lee, J, Liu, D, Mccollam, K, Mcgarry, M, Mirnov, V, Morton, L, Munaretto, S, Nornberg, M, Nonn, P, Oliva, S, Parke, E, Pueschel, M, Reusch, J, Sauppe, J, Seltzman, A, Sovinec, C, Stone, D, Theucks, D, Thomas, M, Triana, J, Terry, P, Waksman, J, Whelan, G, Brower, D, Ding, W, Lin, L, Demers, D, Fimognari, P, Titus, J, Auriemma, F, Cappello, S, Franz, P, Innocente, P, Lorenzini, R, Martines, E, Momo, B, Piovesan, P, Puiatti, M, Spolaore, M, Terranova, D, Zanca, P, Davydenko, V, Deichuli, P, Ivanov, A, Polosatkin, S, Stupishin, N, Spong, D, Craig, D, Stephens, H, Harvey, R, Cianciosa, M, Hanson, J, Breizman, B, Li, M, and Zheng, L
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gyrokinetic ,stellarator ,Nuclear and High Energy Physics ,Reversed field pinch ,energetic particle ,gyrokinetics ,density limit ,energetic particles ,Condensed Matter Physics ,beta limit - Abstract
An overview of recent results from the MST reversed field pinch programme is presented. With neutral beam injection, bursty energetic particle (EP) modes are observed. The profiles of the magnetic and density fluctuations associated with these EP modes are measured using a far infrared interferometer-polarimeter. Equilibrium reconstructions of the quasi-single-helicity 3D helical state are provided by the V3FIT code that now incorporates several of MST's advanced diagnostics. The orientation of the helical structure is controlled using a new resonant magnetic perturbation technique. Gyrokinetic simulations based on experimental equilibria predict unstable trapped-electron modes (TEMs), and small-scale density fluctuations are detected in improved-confinement plasmas with TEM-like features. Upgraded pellet injection permits study of density and beta limits over MST's full range of operation, and an MST-record line-average density of 0.9 ×1020 m3 (n/nG = 1.4) has been obtained. Impurity ion temperature measurements reveal a charge-to-mass-ratio dependence in the rapid heating that occurs during a sawtooth crash. Runaway of NBI-born fast ions during the impulsive sawtooth event agrees with test-particle theory. Magnetic self-organization studies include measurements of the dynamo emf with an applied ac inductive electric field using oscillating field current drive.
- Published
- 2015
- Full Text
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