Feasibility study of a high spatial and time resolution beam emission spectroscopy diagnostic for localized density fluctuation measurements in Lithium Tokamak eXperiment-β (LTX-β)

Banerjee, Santanu; Boyle, D. P.; Maan, A.; Majeski, R.; Kaita, R.; Smith, D.; von Hellermann, M.; Hansen, C.; Capecchi, W.; Elliott, D.

doi:10.1063/5.0101834

Feasibility study of a high spatial and time resolution beam emission spectroscopy diagnostic for localized density fluctuation measurements in Lithium Tokamak eXperiment-β (LTX-β)

Journal Article · Sun Nov 06 23:00:00 EST 2022 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0101834· OSTI ID:1899094

^[1]; ^[1]; ^[1]; Majeski, R. ^[1]; Kaita, R. ^[1]; ^[2]; von Hellermann, M. ^[3]; ^[4]; Capecchi, W. ^[2]; Elliott, D. ^[5]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Univ. of Wisconsin, Madison, WI (United States)
Institute for Energy and Climate Research (IEK) (Germany)
Univ. of Washington, Seattle, WA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Trapped electron mode (TEM) is the main source of turbulence predicted for the unique operation regime of a flat temperature profile under low-recycling conditions in the LTX-β tokamak, while ion temperature gradient driven turbulence may also occur with gas fueling from the edge. To investigate mainly TEM scale density fluctuations, a high spatial and time resolution 2D beam emission spectroscopy (BES) diagnostic is being developed. Apart from spatially localized density turbulence measurement, BES can provide turbulence flow and flow shear dynamics. This BES system will be realized using an avalanche photodiode-based camera and narrow band interference filter. The system can acquire data at 2 MHz. Simulations with the Simulation of Spectra (SOS) code indicate that a high signal to noise ratio can be achieved with the proposed system. This will enable sampling the density fluctuations at this high time resolution. Finally, the design considerations and system optimization using the SOS code are presented.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1899094

Alternate ID(s):: OSTI ID: 1897320

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 93; ISSN 0034-6748

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

Country of Publication:: United States

Language:: English

References (19)

Feasibility study of a high spatial and time resolution beam emission spectroscopy diagnostic for localized density fluctuation measurements in Lithium Tokamak eXperiment-β (LTX-β) Banerjee, Santanu; Boyle, Dennis; Maan, Anurag Princeton Plasma Physics Laboratory, Princeton University https://doi.org/10.34770/gkye-wc69	dataset	January 2022
Feasibility study on the JT-60SA tokamak beam emission spectroscopy diagnostics Asztalos, O.; Pokol, G. I.; Dunai, D. Fusion Engineering and Design, Vol. 123 https://doi.org/10.1016/j.fusengdes.2017.03.125	journal	November 2017
Turbulence imaging and applications using beam emission spectroscopy on DIII-D (invited) McKee, G. R.; Fenzi, C.; Fonck, R. J. Review of Scientific Instruments, Vol. 74, Issue 3 https://doi.org/10.1063/1.1535248	journal	March 2003
On lithium walls and the performance of magnetic fusion devices Krasheninnikov, S. I.; Zakharov, L. E.; Pereverzev, G. V. Physics of Plasmas, Vol. 10, Issue 5 https://doi.org/10.1063/1.1558293	journal	May 2003
Beam emission spectroscopy for density turbulence measurements on the MAST spherical tokamak Field, A. R.; Dunai, D.; Conway, N. J. Review of Scientific Instruments, Vol. 80, Issue 7 https://doi.org/10.1063/1.3170034	journal	July 2009
Diagnostic performance of the beam emission spectroscopy system on the National Spherical Torus Experiment Smith, D. R.; Fonck, R. J.; McKee, G. R. Review of Scientific Instruments, Vol. 83, Issue 10 https://doi.org/10.1063/1.4728094	journal	October 2012
Three-dimensional modeling of beam emission spectroscopy measurements in fusion plasmas Guszejnov, D.; Pokol, G. I.; Pusztai, I. Review of Scientific Instruments, Vol. 83, Issue 11 https://doi.org/10.1063/1.4764564	journal	November 2012
Combined hydrogen and lithium beam emission spectroscopy observation system for Korea Superconducting Tokamak Advanced Research Lampert, M.; Anda, G.; Czopf, A. Review of Scientific Instruments, Vol. 86, Issue 7 https://doi.org/10.1063/1.4923251	journal	July 2015
Initial beam emission spectroscopy diagnostic system on HL-2A tokamak Ke, R.; Wu, Y. F.; McKee, G. R. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039350	journal	October 2018
Conceptual design and performance predictions for 2D beam emission spectroscopy turbulence measurements at Wendelstein 7-X Smith, D. R.; McKee, G.; Den Hartog, D. Review of Scientific Instruments, Vol. 93, Issue 7 https://doi.org/10.1063/5.0101355	journal	July 2022
Deuterium retention in liquid lithium Baldwin, M. J.; Doerner, R. P.; Luckhardt, S. C. Nuclear Fusion, Vol. 42, Issue 11 https://doi.org/10.1088/0029-5515/42/11/305	journal	October 2002
Wall reflection modeling for charge exchange recombination spectroscopy (CXRS) measurements on Textor and ITER Banerjee, Santanu; Vasu, P.; von Hellermann, M. Plasma Physics and Controlled Fusion, Vol. 52, Issue 12 https://doi.org/10.1088/0741-3335/52/12/125006	journal	November 2010
Improvement of Plasma Performance with Lithium Wall Conditioning in Aditya Tokamak Chowdhuri, M. B.; Manchanda, R.; Ghosh, J. Plasma Science and Technology, Vol. 15, Issue 2 https://doi.org/10.1088/1009-0630/15/2/09	journal	February 2013
Optics of beam emission spectroscopy diagnostic on EAST tokamak Wang, H. J.; Yu, Y.; Chen, R. Journal of Instrumentation, Vol. 13, Issue 01 https://doi.org/10.1088/1748-0221/13/01/p01001	journal	January 2018
Radiative Gaunt factors Burgess, A.; Summers, H. P. Monthly Notices of the Royal Astronomical Society, Vol. 226, Issue 2 https://doi.org/10.1093/mnras/226.2.257	journal	May 1987
Continuous Improvement of H-Mode Discharge Performance with Progressively Increasing Lithium Coatings in the National Spherical Torus Experiment Maingi, R.; Kaye, S. M.; Skinner, C. H. Physical Review Letters, Vol. 107, Issue 14 https://doi.org/10.1103/PhysRevLett.107.145004	journal	September 2011
Observation of Flat Electron Temperature Profiles in the Lithium Tokamak Experiment Boyle, D. P.; Majeski, R.; Schmitt, J. C. Physical Review Letters, Vol. 119, Issue 1 https://doi.org/10.1103/physrevlett.119.015001	journal	July 2017
The EIRENE and B2-EIRENE Codes Reiter, D.; Baelmans, M.; Börner, P. Fusion Science and Technology, Vol. 47, Issue 2 https://doi.org/10.13182/fst47-172	journal	February 2005
Simulation of Spectra Code (SOS) for ITER Active Beam Spectroscopy von Hellermann, Manfred; de Bock, Maarten; Marchuk, Oleksandr Atoms, Vol. 7, Issue 1 https://doi.org/10.3390/atoms7010030	journal	March 2019

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Feasibility study of a high spatial and time resolution beam emission spectroscopy diagnostic for localized density fluctuation measurements in Lithium Tokamak eXperiment-β (LTX-β)

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