Scaling Properties of Runaway Electrons in HL-1M Tokamak

摘要

A simple one-dimensional numerical model including generation, acceleration and loss effects for runaway electrons are used to deduce the runaway energy ε_r. The simulation results are presented in a form of a scaling law of ε_r on plasma parameters. The scaling of ε_r and therefore the runaway confinement time τ_r and runaway electron diffusivity D_r have been studied in HL-1M tokamak, by measuring the hard-X ray spectra under different experimental conditions. A tentative explanation for the scaling of obtained data based on the effects from magnetic turbulence is presented.