Enhanced visible and near-infrared capabilities of the JET mirror-linked divertor spectroscopy system

Lomanowski, B.A.; Meigs, A.G.; Conway, N.J.; Zastrow, K.-D.; Sharples, R.M.; Heesterman, P.; Kinna, D.; Contributors, JET EFDA

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.

Citation

Lomanowski, B., Meigs, A., Conway, N., Zastrow, K., Sharples, R., Heesterman, P., …Contributors, J. E. (2014). Enhanced visible and near-infrared capabilities of the JET mirror-linked divertor spectroscopy system. Review of Scientific Instruments, 85(11), Article 11E432. https://doi.org/10.1063/1.4893426

• Journal Article Type: Article
• Acceptance Date: Jul 1, 2014
• Online Publication Date: Sep 18, 2014
• Publication Date: Nov 1, 2014
• Deposit Date: Oct 19, 2014
• Publicly Available Date: Apr 14, 2015
• Journal: Review of Scientific Instruments
• Print ISSN: 0034-6748
• Electronic ISSN: 1089-7623
• Publisher: American Institute of Physics
• Peer Reviewed: Peer Reviewed
• Volume: 85
• Issue: 11
• Article Number: 11E432
• DOI: https://doi.org/10.1063/1.4893426
• Public URL: https://durham-repository.worktribe.com/output/1419057
• Related Public URLs: http://adsabs.harvard.edu/abs/2014RScI...85kE432L