Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

Z. Chang; W. Park; E. D. Fredrickson; S. H. Batha; M. G. Bell; R. Bell; R. V. Budny; C. E. Bush; A. Janos; F. M. Levinton; K. M. McGuire; H. Park; S. A. Sabbagh; G. L. Schmidt; S. D. Scott; E. J. Synakowski; H. Takahashi; G. Taylor; M. C. Zarnstorff

doi:10.1103/PhysRevLett.77.3553

Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

Z. Chang
, W. Park
, E. D. Fredrickson
, S. H. Batha
, M. G. Bell
, R. Bell
, R. V. Budny
, C. E. Bush
, A. Janos
, F. M. Levinton
, K. M. McGuire
, H. Park
, S. A. Sabbagh
, G. L. Schmidt
, S. D. Scott
, E. J. Synakowski
, H. Takahashi
, G. Taylor
, M. C. Zarnstorff

Research output: Contribution to journal › Article › peer-review

159 Scopus citations

Abstract

Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured T_e profile evolution during the crash and a nonlinear numerical magnetohydrodynamics (MHD) simulation. The good agreement between the observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process

Original language	English
Pages (from-to)	3553-3556
Number of pages	4
Journal	Physical Review Letters
Volume	77
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.77.3553
State	Published - 1996

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10.1103/PhysRevLett.77.3553

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Chang, Z., Park, W., Fredrickson, E. D., Batha, S. H., Bell, M. G., Bell, R., Budny, R. V., Bush, C. E., Janos, A., Levinton, F. M., McGuire, K. M., Park, H., Sabbagh, S. A., Schmidt, G. L., Scott, S. D., Synakowski, E. J., Takahashi, H., Taylor, G., & Zarnstorff, M. C. (1996). Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR. Physical Review Letters, 77(17), 3553-3556. https://doi.org/10.1103/PhysRevLett.77.3553

@article{e076ee74092b4f05af688eedfc67e097,

title = "Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR",

abstract = "Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured Te profile evolution during the crash and a nonlinear numerical magnetohydrodynamics (MHD) simulation. The good agreement between the observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process",

author = "Z. Chang and W. Park and Fredrickson, \{E. D.\} and Batha, \{S. H.\} and Bell, \{M. G.\} and R. Bell and Budny, \{R. V.\} and Bush, \{C. E.\} and A. Janos and Levinton, \{F. M.\} and McGuire, \{K. M.\} and H. Park and Sabbagh, \{S. A.\} and Schmidt, \{G. L.\} and Scott, \{S. D.\} and Synakowski, \{E. J.\} and H. Takahashi and G. Taylor and Zarnstorff, \{M. C.\}",

year = "1996",

doi = "10.1103/PhysRevLett.77.3553",

language = "English",

volume = "77",

pages = "3553--3556",

number = "17",

}

Chang, Z, Park, W, Fredrickson, ED, Batha, SH, Bell, MG, Bell, R, Budny, RV, Bush, CE, Janos, A, Levinton, FM, McGuire, KM, Park, H, Sabbagh, SA, Schmidt, GL, Scott, SD, Synakowski, EJ, Takahashi, H, Taylor, G & Zarnstorff, MC 1996, 'Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR', Physical Review Letters, vol. 77, no. 17, pp. 3553-3556. https://doi.org/10.1103/PhysRevLett.77.3553

TY - JOUR

T1 - Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

AU - Chang, Z.

AU - Park, W.

AU - Fredrickson, E. D.

AU - Batha, S. H.

AU - Bell, M. G.

AU - Bell, R.

AU - Budny, R. V.

AU - Bush, C. E.

AU - Janos, A.

AU - Levinton, F. M.

AU - McGuire, K. M.

AU - Park, H.

AU - Sabbagh, S. A.

AU - Schmidt, G. L.

AU - Scott, S. D.

AU - Synakowski, E. J.

AU - Takahashi, H.

AU - Taylor, G.

AU - Zarnstorff, M. C.

PY - 1996

Y1 - 1996

N2 - Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured Te profile evolution during the crash and a nonlinear numerical magnetohydrodynamics (MHD) simulation. The good agreement between the observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process

AB - Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n = 2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured Te profile evolution during the crash and a nonlinear numerical magnetohydrodynamics (MHD) simulation. The good agreement between the observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process

UR - https://www.scopus.com/pages/publications/4243964471

UR - https://www.scopus.com/pages/publications/4243964471#tab=citedBy

U2 - 10.1103/PhysRevLett.77.3553

DO - 10.1103/PhysRevLett.77.3553

M3 - Article

AN - SCOPUS:4243964471

SN - 0031-9007

VL - 77

SP - 3553

EP - 3556

JO - Physical Review Letters

JF - Physical Review Letters

IS - 17

ER -

Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

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