A Self-Organized-Criticality model consistent with statistical properties of edge turbulence in a fusion plasma

TL;DR

This paper demonstrates that a self-organized-criticality model accurately reproduces the statistical properties of edge turbulence in fusion plasma, supporting SOC as a viable framework for plasma transport modeling.

Contribution

It presents a SOC model that aligns with experimental turbulence data, addressing previous limitations and reinforcing SOC's relevance in fusion plasma physics.

Findings

Model matches statistical properties of turbulence signals

Supports SOC as a paradigm for plasma transport

Overcomes earlier criticisms of SOC in fusion contexts

Abstract

The statistical properties of the intermittent signal generated by a recent model for self-organized-criticality (SOC) are examined. A successful comparison is made with previously published results of the equivalent quantities measured in the electrostatic turbulence at the edge of a fusion plasma. This result re-establishes SOC as a potential paradigm for transport in magnetic fusion devices, overriding shortcomings pointed out in earlier works [E. Spada, et al, Phys. Rev. Lett. 86, 3032 (2001); V. Antoni, et al, Phys. Rev. Lett. 87, 045001 (2001)].