Shape control with the XSC during plasma current ramp-up and ramp-down at the JET tokamak

Author

De Tommasi, G. ; Ambrosino, G. ; Ariola, M. ; Calabro, G. ; Galeani, S. ; Maviglia, F. ; Pironti, A. ; Rimini, F.G. ; Sips, A.C.C. ; Varano, G. ; Vitelli, R. ; Zaccarian, Luca

Author_Institution

Assoc. EURATOM-ENEA-CREATE, Univ. di Napoli Federico II, Naples, Italy

fYear

2013

fDate

10-13 Dec. 2013

Firstpage

366

Lastpage

371

Abstract

The eXtreme Shape Controller (XSC) has been originally designed to control the plasma shape at JET during the flat-top phase, when the plasma current has a constant value. During the JET 2012 experimental campaigns, the XSC has been used to improve the shape control during the transient phases of plasma current ramp-up and ramp-down. In order to avoid the saturation of the actuators with these transient phases, a Current Limit Avoidance system (CLA) has been designed and implemented. This paper discusses the CLA algorithm and presents the experimental results achieved at JET during the 2012 campaigns using the XSC.

Keywords

Tokamak devices; actuators; control system synthesis; controllers; fusion reactor design; physical instrumentation control; plasma toroidal confinement; shape control; CLA algorithm; JET tokamak; XSC; actuators; current limit avoidance system; extreme shape controller; flat-top phase; plasma current ramp-down; plasma current ramp-up; shape control; transient phases; Programmable logic arrays; Current Limit Avoidance; Plasma shape control; Tokamak control; eXtreme Shape Controller;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control (CDC), 2013 IEEE 52nd Annual Conference on

Conference_Location

Firenze

ISSN

0743-1546

Print_ISBN

978-1-4673-5714-2

Type

conf

DOI

10.1109/CDC.2013.6759909

Filename

6759909