2005
DOI: 10.1063/1.1924556
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A novel feedback algorithm for simulating controlled dynamics and confinement in the advanced reversed-field pinch

Abstract: Density fluctuation measurements by far-forward collective scattering in the MST reversed-field pincha) Rev. Sci. Instrum. 83, 10E302 (2012); 10.1063/1.4728098Control of ideal and resistive magnetohydrodynamic modes in reversed field pinches with a resistive wall

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Cited by 5 publications
(12 citation statements)
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References 16 publications
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“…As has been presented by the authors elsewhere [13,14], the introduction of active feedback of the dynamo field substantially increases energy confinement time and poloidal beta and reduces the radial magnetic field (see figure 1). Tearing modes essentially disappear (the amplitude of the field is reduced by two orders of magnitude) and the fluctuation field E f is virtually eliminated except in the edge region where some activity persists.…”
Section: Effect Of Active Feedback Defined E Amentioning
confidence: 63%
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“…As has been presented by the authors elsewhere [13,14], the introduction of active feedback of the dynamo field substantially increases energy confinement time and poloidal beta and reduces the radial magnetic field (see figure 1). Tearing modes essentially disappear (the amplitude of the field is reduced by two orders of magnitude) and the fluctuation field E f is virtually eliminated except in the edge region where some activity persists.…”
Section: Effect Of Active Feedback Defined E Amentioning
confidence: 63%
“…To avoid the difficulties associated with optimization of a CPC routine that involves three independent parameters, the development of a numerical model for automatic optimization of the auxiliary field through feedback of the dynamo field has been carried out [13,14]. A general feedback system takes the form…”
Section: Implementation Of a Feedback-defined E Amentioning
confidence: 99%
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“…However, the introduction of three free parameters makes optimization of the CPC scheme difficult. Therefore, a parameter-free automatic CPC scheme has been developed by implementing a feedback algorithm [15]. In this paper, an idealized situation is considered where the dynamo action is diminished by applying an arbitrary ad hoc electric field without regard to the actual technology to obtain it, and an optimum configuration is surveyed under certain constraints by minimizing the necessary electric field for eliminating the dynamo action.…”
Section: Introductionmentioning
confidence: 99%