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Durham University

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Publication details for Prof Ray Sharples

Lovell, Jack, Naylor, Graham, Field, Anthony, Drewelow, Peter & Sharples, Ray (2016). An FPGA-Based Bolometer for the MAST-U Super-X Divertor. Review of Scientific Instruments 87(11): 11E721.

Author(s) from Durham


A new resistive bolometer system has been developed for MAST-Upgrade. It will measure radiated power in the new Super-X divertor, with millisecond time resolution, along 16 vertical and 16 horizontal lines of sight. The system uses a Xilinx Zynq-7000 series Field-Programmable Gate Array (FPGA) in the D-TACQ ACQ2106 carrier to perform real time data acquisition and signal processing. The FPGA enables AC-synchronous detection using high performance digital filtering to achieve a high signal-to-noise ratio and will be able to output processed data in real time with millisecond latency. The system has been installed on 8 previously unused channels of the JET vertical bolometer system. Initial results suggest good agreement with data from existing vertical channels but with higher bandwidth and signal-to-noise ratio.