| Original Articles |
|
|
|
|
Magnetic Fluctuation Measurement in Sino United Spherical Tokamak Plasma |
| LIU Fei;WANG Wen-Hao;HE Ye-Xi;LIU Jun;TAN Yi;XIE Li-Feng;ZENG Long |
| Sino United Spherical Tokamak Laboratory, Department of Engineering Physics, Tsinghua University, Beijing 100084 |
|
| Cite this article: |
|
LIU Fei, WANG Wen-Hao, HE Ye-Xi et al 2007 Chin. Phys. Lett. 24 2014-2017 |
|
|
|
|
Abstract To investigate the magnetic fluctuations and for further transport study, the poloidal and radial magnetic field measurement is conducted on the Sino United Spherical Tokamak (SUNIST). Auto-power spectral density indicates that the magnetic fluctuation energy mainly concentrates in the frequency region lower than 10kHz. The magnetic field oscillations, which are characterized by harmonic frequencies of 40kHz, are observed in the scrape-off layer; by contrast, in the plasma core, the magnetic fluctuations are of Gaussian type. The time-frequency profiles show that the poloidal magnetic fluctuations are temporally intermittent. The autocorrelation calculation indicates that the fluctuations in decorrelation time vary between the core and the edge.
|
| Keywords:
52.40.Hf
52.25.Gj
52.55.Fa
|
|
|
Received: 08 April 2007
Published: 25 June 2007
|
|
| PACS: |
52.40.Hf
|
(Plasma-material interactions; boundary layer effects)
|
| |
52.25.Gj
|
(Fluctuation and chaos phenomena)
|
| |
52.55.Fa
|
(Tokamaks, spherical tokamaks)
|
|
|
|
|
|
[1]Bickerton R J 1997 Plasma Phys. Control. Fusion 39 339
[2] Carreras B A, Diamond P H, Murakami M, Dunlap J L, Bell J D,Hicks H R, Holmes J A, Lazarus E A, Par\'e V K, Similon V K, Thomas C Eand Wieland R M 1983 Phys. Rev. Lett. 50 503
[3] Serianni G, Muraril A, Fiksel G, Antoni V, Bagatin M, DesideriD, Martines E and Tramontin L 2001 Plasma Phys. Control. Fusion 43 919
[4] Bolzonella T, Martin P, Martini S, Marrelli L, Pasqualotto R andTerranova D 2001 Phys. Rev. Lett. 87 195001
[5] Maggs J E and Morales G J 2003 Phys. Plasmas 10 2267
[6] Zhang G P, He Y X, Wang W H, Gao Z, Zeng L, Xie L F and Feng CH 2004 Chin. Phys. Lett. 21 2469
[7] Wang W H, He Y X, Gao Z, Zeng L,Zhang G P, Xie L F, Feng C H, Xiao Q and Li X Y 2004 Chin. Phys.Lett. 21 1578
[8] Takeji S, Hirano Y, Inoue N,Miyazawa J, Morikawa J, Ogawa Y,Sasaki K, Watanabe M and Youshida Z 1995 Plasma Phys. Control.Fusion 37 1433
[9] Garcia-Cortes I, Pedrosa M A, Hidalgo C, Branas B, Estrada T,Balbin R, de la Luna E, Sanchez J and Navarro A P 1992 Phys.Fluids B 4 4007
[10] Vittoria M, Heller A P, Castro R M, Caldas LL, Brasilio Z A and Silva R P D 1993 Brazilian J. Phys. 23273 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
