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, Lisboa, Portugal

Volume

53

Issue

3

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

845

Lastpage

848

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 in-house 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) can be calculated in approximately 100 ms, thus providing a twenty-value 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; digital signal processing chips; parallel processing; plasma diagnostics; pulse analysers; real-time systems; system buses; TCV Tokamak; TCV plasma; VME intelligent module; X-ray detector; count rate; electron temperature; nuclear fusion; real time data acquisition control; real time digital signal processing; real time feedback control; real time parallel processing; real-time multiDSP; real-time pulse height analysis; time resolution; Feedback control; Plasma diagnostics; Plasma materials processing; Plasma temperature; Plasma x-ray sources; Real time systems; Signal generators; Signal resolution; Tokamaks; X-ray detectors; Real time data acquisition control; nuclear fusion; real time digital signal processing; real time feedback control; real time parallel processing;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2006.874498

Filename

1644951