Výsledky vyhledávání - "W.F. Bergerson"

Overview of results from the MST reversed field pinch experiment

Autor: 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

Publikováno v: Nuclear fusion 53 (2013). doi:10.1088/0029-5515/53/10/104017
info:cnr-pdr/source/autori: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/titolo:Overview of results from the MST reversed field pinch experiment/doi:10.1088%2F0029-5515%2F53%2F10%2F104017/rivista:Nuclear fusion/anno:2013/pagina_da:/pagina_a:/intervallo_pagine:/volume:53

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 classi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e611584f48c9238d6dc62993ab354d2b
http://www.cnr.it/prodotto/i/265154

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Parametric dependence and control of 3D helical structures in MST

Publikováno v: 53rd Annual Meeting of the APS Division of Plasma Physics (APS 2011), Salt Lake City, Utah, USA, November 14-18, 2011
info:cnr-pdr/source/autori:B.E. Chapman; D.J. Den Hartog; J.A. Goetz; M.B. McGarry; E. Parke; J.A. Reusch; J.S. Sarff; W.F. Bergerson; D.L. Brower; W.X. Ding; L. Lin; F. Auriemma; S. Cappello; P. Franz; P. Innocente; R. Lorenzini; E. Martines; B. Momo; P. Piovesan; M.E. Puiatti; M. Spolaore; D. Terranova; P. Zanca/congresso_nome:53rd Annual Meeting of the APS Division of Plasma Physics (APS 2011)/congresso_luogo:Salt Lake City, Utah, USA/congresso_data:November 14-18, 2011/anno:2011/pagina_da:/pagina_a:/intervallo_pagine

MST plasmas with a central 3D helical structure are now routinely achievable. As in RFX-mod, the stellarator-like structure arises in otherwise toroidally axisymmetric plasmas when the innermost-resonant m = 1 tearing mode grows to large amplitude an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::2f3cfef3c81c450e23d901fb11f1b21a
https://publications.cnr.it/doc/189198

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Differential interferometry for measurement of density fluctuations and fluctuation-induced transport (invited)

Autor: W.F. Bergerson, D. L. Brower, Weixing Ding, T. Yates, L. Lin

Publikováno v: The Review of scientific instruments. 81(10)

Differential interferometry employs two parallel laser beams with a small spatial offset (less than beam width) and frequency difference (1-2 MHz) using common optics and a single mixer for a heterodyne detection. The differential approach allows mea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45d714fa905421a45212b0ca6cac6346
https://pubmed.ncbi.nlm.nih.gov/21033864

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Observation of resistive and ferritic wall modes in a line-tied pinch

Autor: J. S. Sarff, W.F. Bergerson, Chris Hegna, David Hannum, Roch Kendrick, Cary Forest

Publikováno v: Physical review letters. 101(23)

The resistive wall mode is experimentally identified and characterized in a line-tied, cylindrical screw pinch when the edge safety factor is less than a critical value. Different wall materials have been used to change the wall time and show that th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd784597a71d50a8f82feb4968b94106
https://pubmed.ncbi.nlm.nih.gov/19113564

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Onset and Saturation of the Kink Instability in a Current-Carrying Line-Tied Plasma

Autor: S. Stambler, Roch Kendrick, David Hannum, W.F. Bergerson, G. Fiksel, J. S. Sarff, Cary Forest

Publikováno v: Physical Review Letters. 96

An internal kink instability is observed to grow and saturate in a line-tied screw pinch plasma. Detailed measurements show that an ideal, line-tied kink mode begins growing when the safety factor q=(4{pi}{sup 2}r{sup 2}B{sub z}/{mu}{sub 0}I{sub p}(r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6c577d45939ad877be9659333c6cfe7
https://doi.org/10.1103/physrevlett.96.015004

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The rotating wall machine: A device to study ideal and resistive magnetohydrodynamic stability under variable boundary conditions

Autor: W.F. Bergerson, Cary Forest, Roch Kendrick, Matthew Brookhart, Carlos Paz-Soldan, G. Fiksel, David Hannum

Publikováno v: Review of Scientific Instruments. 81:123503

The rotating wall machine, a basic plasma physics experimental facility, has been constructed to study the role of electromagnetic boundary conditions on current-driven ideal and resistive magnetohydrodynamic instabilities, including differentially r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::600da1e6f8d9a3955868b2933d35b45d
https://doi.org/10.1063/1.3505487

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Preliminary results from the Alcator C-Mod polarimeter

Autor: J. H. Irby, Peng Xu, Weixing Ding, P. Michael, Y. Rokhman, R. Leccacorvi, R.F. Vieira, R. Murray, Earl Marmar, D. L. Brower, A. Kanojia, J. Bosco, D.K. Mansfield, W.F. Bergerson

Publikováno v: Review of Scientific Instruments. 81:10D507

A poloidally viewing far infrared polarimeter diagnostic is being developed for the Alcator C-Mod tokamak, and will be used to determine the q-profile and to study density and magnetic field fluctuations. A three-chord version of what will eventually

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1741f2691cb95ba3e00159dbbfe2f076
https://doi.org/10.1063/1.3466803

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