Thomson scattering diagnostic data acquisition systems for modern fusion systems

• Published in: 2015 4th International Conference on Advancements in Nuclear Instrumentation Measurement Methods and their Applications (ANIMMA) pp. 1 - 4
• Main Authors: Ivanenko, S. V., Khilchenko, A. D., Ovchar, V. K., Zubarev, P. V., Kvashnin, A. N., Puryga, E. A., Ivanova, A. A., Kotelnikov, A. I.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-04-2015
• Subjects: Analog-digital conversion; Clocks; Data acquisition; Data acquisition system; Detectors; Field programmable gate arrays; ITER divertor; Photodetectors; Scattering; Scattering parameters; Synchronization; Thomson scattering diagnostic
• DOI: 10.1109/ANIMMA.2015.7465649

Uniquely designed complex data acquisition system for Thomson scattering diagnostic was developed. It allows recording short duration (3-5 ns) scattered pulses with 2GHz sampling rate and 10-bit total resolution in oscilloscope mode. The system consists up to 48 photo detector modules with 0200MHz bandwidth, 1-48 simultaneously sampling ADC modules and synchronization subsystem. The photo detector modules are based on avalanche photodiodes (APD) and ultra-low noise transimpedance amplifiers. ADC modules include fast analog to digital convertors and digital units based on the FPGA (Field-Programmable Gate Array) for data processing and storage. The synchronization subsystem is used to form triggering pulses and to organize the simultaneously mode of ADC modules operation.