Development of a real-time tangential dispersion interferometer system and its first results for density feedback on EAST

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2025-03-05 DOI:10.1016/j.fusengdes.2025.114930

Yuyang Liu , Weiming Li , Yao Zhang , Shouxin Wang , Jiamin Zhang , Hui Lian , Bo Hong , Wenmin Zhang , Yuan Yao , Yinxian Jie , Haiqing Liu

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Abstract

A horizontal tangential dispersion interferometer (TDI) system has been developed for the Experimental Advanced Superconducting Tokamak (EAST) to enhance the accuracy of density feedback. This system offers several advantages, including vibration insensitivity and a reduced risk of fringe jump errors compared to far-infrared interferometers, making it more suitable for density feedback control.

The TDI system uses two horizontal windows for tangential density measurements. Experimental results demonstrate that the TDI provides stable signals and enhances overall system reliability. Statistical analysis demonstrates that the TDI data have a measurement success rate of approximately 96%. Moreover, the temporal resolution of the system, at 20 µs, meets the requirements for real-time feedback control on EAST. The system employs a modified density real-time processing system and has been evaluated for density feedback control. During density feedback control experiments, the TDI system demonstrated notable advantages and stability, making it more suitable for future high-density burning plasma devices.

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.