Upgrade of the data acquisition and control system of the ASDEX upgrade microwave reflectometer

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Combo, A (Author) Other; Silva, A (Author) Other; Varela, P (Author) Other; Manso, M (Author) Other; Sousa, J (Author) Other; Correia, C (Author) Other; Varandas, CAF (Author) Other

Journal

Title: IEEE Transactions on Nuclear Science

Vol. 53 No. 1

Pages: 918-922

ISSN: 0018-9499

Publisher: IEEE

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 1 Citation

Other information

Authenticus ID: P-004-KEN

DOI: 10.1109/tns.2006.875047

Abstract (EN): Microwave reflectometry is an important diagnostic to characterize the plasma electron density in fusion experiments. The broadband frequency swept microwave reflectometry system of the ASDEX Upgrade tokamak covers the frequency range of 16 to 100 GHz. In order to fully exploit the diagnostic capabilities it is mandatory to upgrade the data acquisition and control system. It should comply with shorter frequency sweep times and improved time resolution as well as accuracy allowing, for example, plasma position and shape measurements for control purposes, as it is foreseen for ITER. A new PCI-based system is under development based on a digitizer card with two channels, 12-bit resolution, and a waveform generator with one channel, 16-bit resolution. Both cards have 512 Mbytes of memory, a digital signal processor (DSP) for advanced processing modes, and a field programmable gate array (FPGA) for. real-time algorithms and complex trigger managing modes. The system is able to support multiple cards (digitizers and signal generators) operating synchronously at a maximum rate of 210 MSamples/second.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5