Design Method of Divertor in Tokamak Reactors

Divertor design for the tokamak physics experiment

In this paper we discuss the divertor design for the planned TPX tokamak, which will explore the physics and technology of steady state (1000 s pulses) heat and particle removal in high confinement (up to 4 × L-mode), high beta (up to /3 N = 5) divertor plasmas sustained by non-inductive current drive. TPX will operate in the double-null divertor configuration, with actively cooled graphite tar...

Dissipative Divertor Operation in the Alcator C-mod Tokamak Dissipative Divertor Operation in the Alcator C-mod Tokamak

The achievement of large volumetric power losses (dissipation) in the Alcator C-Mod divertor region is demonstrated in two operational modes: radiative divertor and detached divertor. During radiative divertor operation, the fraction of SOL power lost by radiation is P R/PSOL0.8 with single null plasmas, n e < 2x10 20 m-3 and I < 1 MA. These plasmas sometimes have very high recycling, with nedi...

Performance Analysis of Low-power Tokamak Reactors

Global models are useful in the analysis of fusion reactors due to the facility in computing and presenting the results in terms of comprehensive parameters. A general figure of merit, which encompasses all the relevant tokamak parameters, is introduced in this article by a convenient normalization of the global power balance equation. In this way, different hypothetical tokamak reactors can be...

Divertor Plasma Physics Experiments on the Diii–d Tokamak

DIVERTOR PLASMA PHYSICS EXPERIMENTS ON THE DIII–D TOKAMAK. In this paper we present an overview of the results and conclusions of our most recent divertor physics and development work. Using an array of new divertor diagnostics we have measured the plasma parameters over the entire divertor volume and gained new insights into several divertor physics issues. We present direct experimental evide...

Design Features of Tokamak Power Reactors with Rf-driven Steady State Current