Title :
Prototype of Data Acquisition Systems for ITER Divertor Thomson Scattering Diagnostic
Author :
Ivanenko, S.V. ; Khilchenko, A.D. ; Puryga, E.A. ; Ovchar, V.K. ; Zubarev, P.V. ; Kvashnin, A.N. ; Ivanova, A.A. ; Kotelnikov, A.I.
Author_Institution :
Budker Inst. of Nucl. Phys., Novosibirsk State Univ., Novosibirsk, Russia
Abstract :
The prototype of uniquely designed complex data acquisition system for ITER divertor Thomson scattering diagnostic was developed. It allows recording short duration (3-5 ns) scattered pulses with 2 GHz sampling rate and 10-bit total resolution in oscilloscope mode. The system consists of 48 photo detector modules with 0-200 MHz bandwidth, 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.
Keywords :
Tokamak devices; analogue-digital conversion; data acquisition; field programmable gate arrays; fusion reactor divertors; prototypes; synchronisation; ADC modules; Field Programmable Gate Array; ITER divertor Thomson scattering diagnostic; analog-to-digital convertors; avalanche photodiodes; data acquisition systems; oscilloscope mode; photodetector modules; prototype; synchronization subsystem; ultralow noise transimpedance amplifiers; Clocks; Data acquisition; Noise; Photodetectors; Photonics; Scattering; Synchronization; Analog-digital conversion; ITER divertor; data acquisition system; photodetectors; scattering parameters; thomson scattering diagnostic;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2015.2428195
