Electron Cyclotron Emission Imaging (ECEI) System for the J-TEXT Tokamak
Abstract
A dual array Electron Cyclotron Emission Imaging (ECEI) system is being developed for the J-TEXT tokamak in Wuhan, China. Each 16-element array (expandable to 20 element) provides 2-D 16x8 time-resolved images of Te profiles and fluctuations over extended regions of the J-TEXT plasma. Unique to the J-TEXT ECEI system is an electronics architecture that takes full advantage of the capabilities of PXI multifunction I/O modules which not only provide simultaneous 16-bit 2 MS/s sampling of the ECEI data, but also provide digital I/O signals that are used to remotely control individual RF channel attenuations. These are coupled with Arduino-based controllers which provide remote control of RF channel spacings (selectable between 0.8, 1.0 and 1.3 GHz) and video bandwidths. Details of this ECEI system are presented.
This work was supported in part by U.S. DOE Grant DE-FG02-99ER54531, and by HUST.- Publication:
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APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2018
- Bibcode:
- 2018APS..DPPT11150D