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arXiv · 2112.09363

Design considerations of the European DEMO's IR-interferometer/polarimeter based on TRAVIS simulations

K. J. Brunner·N. Marushchenko·Y. Turkin·W. Biel·J. Knauer·M. Hirsch·R. Wolf
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Abstract

Interferometry is the primary density control diagnostic for large-scale fusion devices, including ITER and DEMO. In this paper we present a ray tracing simulation based on TRAVIS accounting for relativistic effects. The study shows that measurements will over-estimate the plasma density by as much as 20 degree. In addition, we present a measurement geometry, which will enable vertical position control during the plasma's ramp-up phase when gap-reflectometers and neutron cameras are still blind.

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K. J. Brunner, N. Marushchenko, Y. Turkin, W. Biel, J. Knauer, M. Hirsch, R. Wolf. 2021-12-17. Design considerations of the European DEMO's IR-interferometer/polarimeter based on TRAVIS simulations. https://doi.org/10.1088/1748-0221%2F17%2F04%2Fc04001

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