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Durham University

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Publication details for Prof Ray Sharples

Lomanowski, B.A., Meigs, A.G., Conway, N.J., Zastrow, K.-D., Sharples, R.M., Heesterman, P., Kinna, D. & JET EFDA Contributors (2014). Enhanced visible and near-infrared capabilities of the JET mirror-linked divertor spectroscopy systema). Review of Scientific Instruments 85(11): 11E432.

Author(s) from Durham

Abstract

The mirror-linked divertor spectroscopy diagnostic on JET has been upgraded with a new visible and near-infrared grating and filtered spectroscopy system. New capabilities include extended near-infrared coverage up to 1875 nm, capturing the hydrogen Paschen series, as well as a 2 kHz frame rate filtered imaging camera system for fast measurements of impurity (Be II) and deuterium Dα, Dβ, Dγ line emission in the outer divertor. The expanded system provides unique capabilities for studying spatially resolved divertor plasma dynamics at near-ELM resolved timescales as well as a test bed for feasibility assessment of near-infrared spectroscopy.

Notes

Contributed paper, published as part of the Proceedings of the 20th Topical Conference on High-Temperature Plasma Diagnostics, Atlanta, Georgia, USA, June 2014