The multi-spectral imaging diagnostic

Linehan, B. L.; Mumgaard, R. T.; Wensing, M.; Verhaegh, K.; Andrebe, Y.; Harrison, J. R.; Duval, B. P.; Theiler, C.

doi:10.1063/1.5058224

Title: The multi-spectral imaging diagnostic

Journal Article · 10 October 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5058224 · OSTI ID:1609302

Linehan, B. L. ^[1]; Mumgaard, R. T. ^[2]; Wensing, M. ^[3];

^[4]; Andrebe, Y. ^[3]; Harrison, J. R. ^[5]; Duval, B. P. ^[3];

^[3]

Plasma Science and Fusion Center MIT, Cambridge, MA (United States); DOE/OSTI
Plasma Science and Fusion Center MIT, Cambridge, MA (United States)
École Polytechnique Fédérale de Lausanne (EPFL), (Switzerland). Swiss Plasma Center (SPC)
École Polytechnique Fédérale de Lausanne (EPFL), (Switzerland). Swiss Plasma Center (SPC); Univ. of York (United Kingdom)
Culham Science Centre, OX (United Kingdom). Culham Centre for Fusion Energy

The Multi-Spectral Imaging system is a new diagnostic that captures simultaneous spectrally filtered images from a common line of sight while maintaining a large étendue and high throughput. Simultaneously imaging several atomic line intensities may enable numerous measurement techniques. By making a novel modification of a polychromator layout, the MSI sequentially filters and focuses images onto commercial CMOS cameras while exhibiting minimal vignetting and aberrations. A four-wavelength system was initially installed and tested on Alcator C-Mod and subsequently moved to TCV. The images are absolutely calibrated and spatially registered enabling 2D mappings of atomic line ratios and absolute line intensities. The spectral transmission of the optical system was calibrated using an integrating sphere of known radiance. The images are inverted by cross-referencing points on TCV with a computer-aided design (CAD) model.

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Research Organization:: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Oak Ridge Associated Univ., Oak Ridge, TN (United States)

Sponsoring Organization:: Euratom Research and Training Programme; Swiss National Science Foundation (SNF); USDOE Office of Science (SC)

Contributing Organization:: TCV Team

Grant/Contract Number:: AC05-06OR23100; FC02-99ER54512

OSTI ID:: 1609302

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 89; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (4)

MANTIS: A real-time quantitative multispectral imaging system for fusion plasmas Perek, A.; Vijvers, W. A. J.; Andrebe, Y. Review of Scientific Instruments, Vol. 90, Issue 12 https://doi.org/10.1063/1.5115569	journal	December 2019
Progress toward divertor detachment on TCV within H-mode operating parameters Harrison, J. R.; Theiler, C.; Février, O. Plasma Physics and Controlled Fusion, Vol. 61, Issue 6 https://doi.org/10.1088/1361-6587/ab140e	journal	May 2019
Physics research on the TCV tokamak facility: from conventional to alternative scenarios and beyond Coda, S.; Agostini, M.; Albanese, R. Nuclear Fusion, Vol. 59, Issue 11 https://doi.org/10.1088/1741-4326/ab25cb	journal	August 2019
TCV heating and divertor upgrades Fasoli, A.; Reimerdes, H.; Alberti, S. Nuclear Fusion, Vol. 60, Issue 1 https://doi.org/10.1088/1741-4326/ab4c56	journal	November 2019

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