Data Acquisition and Control System for Broad-band Microwave Reflectometry on EAST

TL;DR

This paper describes a specialized data acquisition and control system designed for broadband microwave reflectometry on EAST, enabling high-accuracy plasma measurements across multiple frequency bands.

Contribution

It introduces a dedicated DAQC system with integrated modules on PXIe platform, tailored for high-precision, high-resolution plasma diagnostics in fusion research.

Findings

System met all measurement accuracy requirements

Performance parameters satisfied reflectometry needs

Ready for experimental validation on EAST

Abstract

Microwave reflectometry is a non-intrusive plasma diagnostic tool which is widely applied in many fusion devices. In 2014, the microwave reflectometry on Experimental Advanced Superconducting Tokamak (EAST) had been upgraded to measure plasma density profile and fluctuation, which covered the frequency range of Q-band (32-56 GHz), V-band (47-76 GHz) and W-band (71-110 GHz). This paper presented a dedicated data acquisition and control system (DAQC) to meet the measurement requirements of high accuracy and temporal resolution. The DAQC consisted of two control modules, which integrated arbitrary waveform generation block (AWG) and trigger processing block (TP), and two data acquisition modules (DAQ) that was implemented base on the PXIe platform from National Instruments (NI). All the performance parameters had satisfied the requirements of reflectometry. The actual performance will be further examined in the experiments of EAST in 2014.