Alfven eigenmodes in the RFX-mod reversed-field pinch plasma

被引：11
|
作者：
Spagnolo, S. [1 ,2 ]
Zuin, M. [1 ]
Auriemma, F. [1 ]
Cavazzana, R. [1 ]
Martines, E. [1 ]
Spolaore, M. [1 ]
Vianello, N. [1 ]
机构：
[1] Assoc EURATOM ENEA Fus, Consorzio RFX, I-35127 Padua, Italy
[2] Univ Padua, Dipartimento Fis G Galilei, I-35131 Padua, Italy
来源：
NUCLEAR FUSION | 2011年 / 51卷 / 08期
关键词：
SPHERICAL TOKAMAK EXPERIMENT; FREQUENCY MODES; WAVE; EXCITATION; SPECTRUM; INSTABILITIES; TFTR;
D O I：
10.1088/0029-5515/51/8/083038
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
High-frequency magnetic activity has been detected at the edge region of the RFX-mod reversed-field pinch (RFP) device. The analysis, performed by means of an insertable probe measuring the magnetic field fluctuations, shows coherent modes clearly depending on the Alfven velocity, at a frequency in the range 0.1-1.5 MHz. Two main distinct modes are observed, characterized by low (vertical bar n vertical bar <= 1) toroidal periodicity, with the features of discrete Alfven eigenmodes. A splitting of the mode frequency is detected, a sign of the relevance of non-linearity in the physical process under study. The experimental observations could suggest an interpretation of the modes in terms of global Alfven eigenmodes. Some hints about the possible drive mechanisms are also given.
引用
收藏
页数：8
相关论文
共 50 条
  • [1] Plasma performance and scaling laws in the RFX-mod reversed-field pinch experiment
    Innocente, P.
    Alfier, A.
    Canton, A.
    Pasqualotto, R.
    NUCLEAR FUSION, 2009, 49 (11)
  • [2] Transport and confinement studies in the RFX-mod reversed-field pinch experiment
    Innocente, P.
    Alfier, A.
    Carraro, L.
    Lorenzini, R.
    Pasqualotto, R.
    Terranova, D.
    NUCLEAR FUSION, 2007, 47 (09) : 1092 - 1100
  • [3] Light impurity transport studies with solid pellet injections in the RFX-mod reversed-field pinch
    Barbui, T.
    Carraro, L.
    Franz, P.
    Innocente, P.
    Munaretto, S.
    Spizzo, G.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2015, 57 (02)
  • [4] Mode coupling studies in the RFX-mod reversed field pinch
    Pizzimenti, A.
    Paccagnella, R.
    PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (06)
  • [5] Alfven waves in reversed-field pinch and tokamak ohmic plasmas: nonlinear 3D MHD modeling and comparison with RFX-mod
    Kryzhanovskyy, A.
    Bonfiglio, D.
    Cappello, S.
    Veranda, M.
    Zuin, M.
    NUCLEAR FUSION, 2022, 62 (08)
  • [6] Wall conditioning and density control in the reversed field pinch RFX-mod
    Puiatti, M. E.
    Spizzo, G.
    Auriemma, F.
    Carraro, L.
    Cavazzana, R.
    De Masi, G.
    Gobbin, M.
    Innocente, P.
    Predebon, I.
    Scarin, P.
    Agostini, M.
    Canton, A.
    Dal Bello, S.
    Fassina, A.
    Franz, P.
    Grando, L.
    Mansfield, D.
    Marrelli, L.
    Martin, P.
    Mazzitelli, G.
    Munaretto, S.
    Roquemore, L.
    Ruzzon, A.
    Terranova, D.
    Valisa, M.
    Vertkov, A.
    Zaniol, B.
    NUCLEAR FUSION, 2013, 53 (07)
  • [7] Upgrades of the RFX-mod reversed field pinch and expected scenario improvements
    Marrelli, L.
    Cavazzana, R.
    Bonfiglio, D.
    Gobbin, M.
    Marchiori, G.
    Peruzzo, S.
    Puiatti, M. E.
    Spizzo, G.
    Voltolina, D.
    Zanca, P.
    Zuin, M.
    Berton, G.
    Bettini, P.
    Bolzonella, T.
    Canton, A.
    Cappello, S.
    Carraro, L.
    Cordaro, L.
    Dal Bello, S.
    Dalla Palma, M.
    De Masi, G.
    Fassina, A.
    Gnesotto, F.
    Grando, L.
    Innocente, P.
    Lunardon, F.
    Manduchi, G.
    Marcuzzi, D.
    Marconato, N.
    Piovan, R.
    Pomaro, N.
    Rigoni, A.
    Rizzolo, A.
    Scarin, P.
    Siragusa, M.
    Sonato, P.
    Spagnolo, S.
    Spolaore, M.
    Terranova, D.
    NUCLEAR FUSION, 2019, 59 (07)
  • [8] Internal and external electron transport barriers in the RFX-mod reversed field pinch
    Puiatti, M. E.
    Valisa, M.
    Agostini, M.
    Auriemma, F.
    Bonomo, F.
    Carraro, L.
    Fassina, A.
    Gobbin, M.
    Lorenzini, R.
    Momo, B.
    Scaggion, A.
    Zaniol, B.
    Alfier, A.
    Apolloni, L.
    Baruzzo, M.
    Bolzonella, T.
    Bonfiglio, D.
    Canton, A.
    Cappello, S.
    Cavazzana, R.
    Dal Bello, S.
    De Masi, G.
    Escande, D. F.
    Franz, P.
    Gazza, E.
    Guo, S.
    Innocente, P.
    Marchiori, G.
    Marrelli, L.
    Martin, P.
    Martines, E.
    Martini, S.
    Menmuir, S.
    Novello, L.
    Paccagnella, R.
    Piovesan, P.
    Piron, L.
    Predebon, I.
    Ruzzon, A.
    Sattin, F.
    Scarin, P.
    Soppelsa, A.
    Spizzo, G.
    Spagnolo, S.
    Spolaore, M.
    Terranova, D.
    Veranda, M.
    Vianello, N.
    Zanca, P.
    Zanotto, L.
    NUCLEAR FUSION, 2011, 51 (07)
  • [9] Self-Organized Helical Equilibria in the RFX-Mod Reversed Field Pinch
    Terranova, D.
    Gobbin, M.
    Boozer, A. H.
    Hirshman, S. P.
    Marrelli, L.
    Pomphrey, N.
    CONTRIBUTIONS TO PLASMA PHYSICS, 2010, 50 (08) : 775 - 779
  • [10] Vanishing Magnetic Shear And Electron Transport Barriers In The RFX-Mod Reversed Field Pinch
    Gobbin, M.
    Bonfiglio, D.
    Escande, D. F.
    Fassina, A.
    Marrelli, L.
    Alfier, A.
    Martines, E.
    Momo, B.
    Terranova, D.
    PHYSICAL REVIEW LETTERS, 2011, 106 (02)
12345