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

摘要

Microwave reflectometry is a non-intrusive plasma diagnostic tool which iswidely applied in many fusion devices. In 2014, the microwave reflectometry onExperimental Advanced Superconducting Tokamak (EAST) had been upgraded tomeasure plasma density profile and fluctuation, which covered the frequencyrange of Q-band (32-56 GHz), V-band (47-76 GHz) and W-band (71-110 GHz). Thispaper presented a dedicated data acquisition and control system (DAQC) to meetthe measurement requirements of high accuracy and temporal resolution. The DAQCconsisted of two control modules, which integrated arbitrary waveformgeneration block (AWG) and trigger processing block (TP), and two dataacquisition modules (DAQ) that was implemented base on the PXIe platform fromNational Instruments (NI). All the performance parameters had satisfied therequirements of reflectometry. The actual performance will be further examinedin the experiments of EAST in 2014.