Data acquisition system for the magnetics diagnostics in COMPASS-U

COMPASS-U will be a new magnetic fusion experiment, designed to support the operation of ITER and to serve as a stepping stone on the road to DEMO, addressing key challenges in its construction and design. As such it will be a high magnetic field device (5T), supporting high densities and power fluxes relevant to ITER and DEMO. As with any magnetic fusion device magnetic diagnostics are fundamental for both plasma control and scientific studies. The requirements placed on the acquisition system for these diagnostics are not readily found in the market and a custom design has the potential to fulfil them at a lower cost.

The design of a data acquisition system satisfying the requirements of the magnetic diagnostics in COMPASS-U is presented. The carrier board under design is based on a FPGA SoM and is compatible with existing isolated 2MSPS ADC modules. This module confers flexibility to the design and allows the functionality of the board to be extended to suit other data acquisition applications requiring a high number of channels and a high volume of data at a low cost per channel.


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