Jun 5 – 10, 2016
Padova, Italy
Europe/Rome timezone

A Hybrid Analog-digital Integrator for EAST Device

Jun 7, 2016, 3:00 PM
1h 30m
Centro Congressi (Padova)

Centro Congressi

Padova

Poster presentation Real Time System Architectures and Intelligent Signal Processing Poster session 1

Speaker

Dr Yong Wang (Institute of Plasma Physics, Chinese Academy of Sciences)

Description

A hybrid analog-digital integrator has been developed to be compatible with the long pulse plasma discharges on Experimental Advanced Superconductor Tokamak (EAST), in which a pair of analog integrators are used to integrate the input signal by turns to reduce the error caused by the leakage of integration capacitors, and the outputs of two integrators can be combined to construct a continuous integration signal by a Field Programmable Gate Array (FPGA) built in the digitizer. The integration drift is almost linear and stable in controlled temperature, so a period of typically 50 s is used to determine the effective drift slope, which is used to rectify the integration signal in real time. The data integrated in the internal FPGA can be directly transferred into the reflective memory installed in the same PCI eXtensions for Instrumentation (PXI) chassis. The test results show that the processed integration drift is less than 200 uVs during 1000 s integration, which will meet the accuracy of magnetic diagnostics in EAST experimental campaigns.

Primary author

Dr Yong Wang (Institute of Plasma Physics, Chinese Academy of Sciences)

Co-authors

Dr Feng Wang (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Shi Li (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Xiaoyang Sun (Institute of Plasma Physics, Chinese Academy of Sciences) Prof. Zhenshan Ji (Institute of Plasma Physics, Chinese Academy of Sciences) Dr Zuchao Zhang (Institute of Plasma Physics, Chinese Academy of Sciences)

Presentation materials