Non-linear model-based optimization of actuator trajectories for tokamak plasma profile control

• Published in: Plasma Physics And Controlled Fusion, vol. 54, p. 025002
• Publication date: 2012

A computational method is presented to determine the tokamak actuator time evolution (trajectories) required to optimally reach a given point in the tokamak operating space while satisfying a set of constraints. Usually, trajectories of plasma auxiliary heating, current drive and plasma current required during the transient phases of a tokamak shot to reach a desired shape of the plasma temperature and safety factor (q) profiles are determined by trial-and-error by physics operators. In this paper, these trajectories are calculated by solving a non-linear, constrained, finite-time optimal control problem.

Keywords: Internal Transport Barriers ; Current Drive ; Tcv Tokamak ; Diii-D ; Electron ; Confinement ; Equilibria ; Discharges ; Progress ; Systems

Reference

• EPFL-ARTICLE-175842
• doi:10.1088/0741-3335/54/2/025002
• View record in Web of Science

Record created on 2012-03-22, modified on 2017-05-12