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Sarff, J.S., Assadi, S., Almagri, A.F., Cekic, M., Den Hartog, D.J., Fiksel, G., Hokin, S.A., Ji, H., Prager, S.C., Shen, W., Sidikman, K.L. and Stoneking, M.R. (1993) Nonlinear Coupling of Tearing Fluctuations in the Madison Symmetric Torus. Physics of Fluids B: Plasma Physics, 5, 2540-2545.
https://doi.org/10.1063/1.860741

has been cited by the following article:

• TITLE: Utilization of Logistical Regression to the Modified Sine-Gordon Model in the MST Experiment

  AUTHORS: Nizar J. Alkhateeb, Hameed K. Ebraheem, Eman M. Al-Otaibi

  KEYWORDS: Madison Symmetric Torus (MST), Magnetohydrodyamic (MHD), Sine-Gordon, Toroidal, Dynamic Modelling, Reversed Field Pinch (RFP), Logistical Regression

  JOURNAL NAME: Open Journal of Modelling and Simulation, Vol.12 No.2, April 19, 2024

  ABSTRACT: In this paper, a logistical regression statistical analysis (LR) is presented for a set of variables used in experimental measurements in reversed field pinch (RFP) machines, commonly known as “slinky mode” (SM), observed to travel around the torus in Madison Symmetric Torus (MST). The LR analysis is used to utilize the modified Sine-Gordon dynamic equation model to predict with high confidence whether the slinky mode will lock or not lock when compared to the experimentally measured motion of the slinky mode. It is observed that under certain conditions, the slinky mode “locks” at or near the intersection of poloidal and/or toroidal gaps in MST. However, locked mode cease to travel around the torus; while unlocked mode keeps traveling without a change in the energy, making it hard to determine an exact set of conditions to predict locking/unlocking behaviour. The significant key model parameters determined by LR analysis are shown to improve the Sine-Gordon model’s ability to determine the locking/unlocking of magnetohydrodyamic (MHD) modes. The LR analysis of measured variables provides high confidence in anticipating locking versus unlocking of slinky mode proven by relational comparisons between simulations and the experimentally measured motion of the slinky mode in MST.