| Autor: |
Khil'chenko, A. D., Kvashnin, A. N., Ivanenko, S. V. I., Zubarev, P. V., Moiseev, D. V., Kovalenko, Yu. V. |
| Předmět: |
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| Zdroj: |
Instruments & Experimental Techniques; May2009, Vol. 52 Issue 3, p382-393, 12p, 6 Diagrams, 7 Graphs |
| Abstrakt: |
The data recording system of a multichannel double-pass dispersion interferometer based on a CO2 laser is described. This system has been designed to record the linear density of plasmas in a real-time mode with a time discreteness of 4 μs and resolution 〈 N e L〉 ∼ 0.34 × 1013 cm−2 ( N e is the electron component of the plasma density, and L is the plasma size in the wave propagation direction) in the range of linear density variations of up to 1017 cm−2. The system is built from unified recording modules that use fast ADCs to record the shape of photodetector and modulator signals and FPGA-based digital units of dataflow processing to form results of measurements. The single-channel recording module of the dispersion interferometer has been tested under actual experimental conditions of the GDL gas-dynamic trap and the TEXTOR tokamak (Julich, Germany). [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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