Development of Efficient FPGA-Based Multi-Channel Phase Meters for IR-Interferometers

Development of Efficient FPGA-Based Multi-Channel Phase Meters for IR-Interferometers

Infrared (IR) interferometry is a method for measuring the line-electron density of fusion plasmas. The significant performance achieved by FPGAs in solving digital signal processing tasks advocates the use of this type of technology in two-color IR interferometers of modern stellarators, such as th...

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Veröffentlicht in:IEEE transactions on nuclear science 2011-08, Vol.58 (4), p.1562-1569
Hauptverfasser: Esteban, L., Sanchez, M., Lopez, J. A., Kornejew, P., Hirsch, M., Nieto-Taladriz, O.
Format: Artikel
Sprache:eng
Schlagworte:
Density
Density measurement
Electron density
Field programmable gate arrays
FPGA
Infrared
infrared interferometry
Infrared radiation
Interferometers
Optimization
Particle beams
Phase measurement
phase meter
Phase meters
Plasma measurements
Plasmas
real-time processing
Tasks
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Beschreibung
Zusammenfassung:Infrared (IR) interferometry is a method for measuring the line-electron density of fusion plasmas. The significant performance achieved by FPGAs in solving digital signal processing tasks advocates the use of this type of technology in two-color IR interferometers of modern stellarators, such as the TJ-II (Madrid, Spain) and the future W7-X (Greifswald, Germany). In this work the implementation of a line-average electron density measuring system in an FPGA device is described. Several optimizations for multichannel systems are detailed and test results from the TJ-II as well as from a W7-X prototype are presented.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2011.2159739