Real-time multi-DSP based VME system for feedback control on the TCV tokamak

Author

Rodrigues, A.P. ; Pereira, L. ; Madeira, T.I. ; Amorim, P. ; Varandas, C.A.F. ; Duval, B.

Author_Institution

Associacao EURATOM/IST, Instituto Superior Tecnico, Lisboa

fYear

2005

fDate

10-10 June 2005

Abstract

This paper describes a real-time pulse height analysis diagnostic for feedback control of the TCV plasma. The implementation of this diagnostic is based on a new generation X-ray detector with high resolution and count rate, an on-site developed VME intelligent module, with parallel processing capabilities provided by four digital signal processors, and several digital signal processing algorithms. Results show that a value of the electron temperature (T_e) is calculated in about 100 ms, allowing to obtain a twenty T_e profile during a TCV discharge. The time resolution might be increased by improving the X-ray detecting system and/or the processing procedures

Keywords

Tokamak devices; X-ray detection; control engineering computing; digital signal processing chips; feedback; parallel processing; physical instrumentation control; physics computing; pulse height analysers; virtual machines; TCV plasma; TCV tokamak; VERSA module Eurocard; VME intelligent module; X-ray detection system; X-ray detector; digital signal processing; digital signal processor; electron temperature; feedback control; parallel processing; pulse height analysis diagnostic; real-time multiDSP system; tokamak configuration variable; Feedback control; Plasma diagnostics; Plasma materials processing; Plasma temperature; Plasma x-ray sources; Real time systems; Signal generators; Signal resolution; Tokamaks; X-ray detectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Real Time Conference, 2005. 14th IEEE-NPSS

Conference_Location

Stockholm

Print_ISBN

0-7803-9183-7

Type

conf

DOI

10.1109/RTC.2005.1547417

Filename

1547417