Experimental observation of heat flux mitigation during divertor detachment in the DIII-D small angle slot divertor

Ren, J.; Donovan, D. C.; Watkins, J. G.; Wang, H. Q.; Thomas, D. M.; Boivin, R.

doi:10.1016/j.nme.2020.100887

Title: Experimental observation of heat flux mitigation during divertor detachment in the DIII-D small angle slot divertor

Journal Article · 28 February 2021 · Nuclear Materials and Energy

DOI: https://doi.org/10.1016/j.nme.2020.100887 · OSTI ID:1765391

Ren, J.; Donovan, D. C.; Watkins, J. G.; Wang, H. Q.; Thomas, D. M.; Boivin, R.

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Research Organization:: Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: FC02-04ER54698; NA0003525; SC0016318; SC0019256

OSTI ID:: 1765391

Journal Information:: Nuclear Materials and Energy, Journal Name: Nuclear Materials and Energy Journal Issue: C Vol. 26; ISSN 2352-1791

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

References (21)

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Power balance and scaling of the radiated power in the divertor and main plasma of Alcator C-Mod Goetz, J. A.; Lipschultz, B.; Graf, M. A. Journal of Nuclear Materials, Vol. 220-222 https://doi.org/10.1016/0022-3115(94)00456-0	journal	April 1995
Plasma facing and high heat flux materials – needs for ITER and beyond Bolt, H.; Barabash, V.; Federici, G. Journal of Nuclear Materials, Vol. 307-311 https://doi.org/10.1016/S0022-3115(02)01175-3	journal	December 2002
Divertor phenomena prior to density limit disruptions in JT-60U Hosogane, N.; Asakura, N.; Kubo, H. Journal of Nuclear Materials, Vol. 196-198 https://doi.org/10.1016/S0022-3115(06)80136-4	journal	December 1992
Divertor heat flux reduction by D2 injection in DIII-D Petrie, T. W.; Buchenauer, D.; Hill, D. N. Journal of Nuclear Materials, Vol. 196-198 https://doi.org/10.1016/S0022-3115(06)80155-8	journal	December 1992
Experimental measurements of the particle flux and sheath power transmission factor profiles in the divertor of DIII-D Donovan, D.; Buchenauer, D.; Watkins, J. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.095	journal	July 2013
Dependence of neutral pressure on detachment in the small angle slot divertor at DIII-D Shafer, M. W.; Covele, B.; Canik, J. M. Nuclear Materials and Energy, Vol. 19 https://doi.org/10.1016/j.nme.2019.04.003	journal	May 2019
Surface thermocouples for measurement of pulsed heat flux in the divertor of the Alcator C-Mod tokamak Brunner, D.; LaBombard, B. Review of Scientific Instruments, Vol. 83, Issue 3 https://doi.org/10.1063/1.3689770	journal	March 2012
2D divertor heat flux distribution using a 3D heat conduction solver in National Spherical Torus Experiment Gan, K. F.; Ahn, J-W.; Park, J. -W. Review of Scientific Instruments, Vol. 84, Issue 2 https://doi.org/10.1063/1.4792595	journal	February 2013
The surface eroding thermocouple for fast heat flux measurement in DIII-D Ren, J.; Donovan, D.; Watkins, J. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5038677	journal	October 2018
Improved core-edge compatibility using impurity seeding in the small angle slot (SAS) divertor at DIII-D Casali, L.; Osborne, T. H.; Grierson, B. A. Physics of Plasmas, Vol. 27, Issue 6 https://doi.org/10.1063/1.5144693	journal	June 2020
Radiative divertor experiments in DIII-D with D ₂ injection Petrie, T. W.; Hill, D. N.; Allen, S. L. Nuclear Fusion, Vol. 37, Issue 3 https://doi.org/10.1088/0029-5515/37/3/I03	journal	March 1997
Plasma detachment in JET Mark I divertor experiments Loarte, A.; Monk, R. D.; Martín-Solís, J. R. Nuclear Fusion, Vol. 38, Issue 3 https://doi.org/10.1088/0029-5515/38/3/303	journal	March 1998
Radiative divertor and scrape-off layer experiments in open and baffled divertors on DIII-D Allen, S. L.; Brooks, N. H.; Bastasz, R. Nuclear Fusion, Vol. 39, Issue 11Y https://doi.org/10.1088/0029-5515/39/11Y/348	journal	November 1999
Physics of the detached radiative divertor regime in DIII-D Fenstermacher, M. E.; Boedo, J.; Isler, R. C. Plasma Physics and Controlled Fusion, Vol. 41, Issue 3A https://doi.org/10.1088/0741-3335/41/3A/028	journal	January 1999
SOLPS modeling of the effect on plasma detachment of closing the lower divertor in DIII-D Sang, C. F.; Stangeby, P. C.; Guo, H. Y. Plasma Physics and Controlled Fusion, Vol. 59, Issue 2 https://doi.org/10.1088/1361-6587/59/2/025009	journal	December 2016
Plasma detachment in divertor tokamaks Leonard, A. W. Plasma Physics and Controlled Fusion, Vol. 60, Issue 4 https://doi.org/10.1088/1361-6587/aaa7a9	journal	February 2018
E × B Flux Driven Detachment Bifurcation in the DIII-D Tokamak Jaervinen, A. E.; Allen, S. L.; Eldon, D. Physical Review Letters, Vol. 121, Issue 7 https://doi.org/10.1103/PhysRevLett.121.075001	journal	August 2018
Observation of Continuous Divertor Detachment in H -Mode Discharges in ASDEX Upgrade Gruber, O.; Kallenbach, A.; Kaufmann, M. Physical Review Letters, Vol. 74, Issue 21 https://doi.org/10.1103/PhysRevLett.74.4217	journal	May 1995
Development of Surface Eroding Thermocouples in Small Angle Slot Divertor in DIII-D Ren, J.; Donovan, D.; Watkins, J. G. IEEE Transactions on Plasma Science, Vol. 48, Issue 6 https://doi.org/10.1109/TPS.2019.2943085	journal	June 2020
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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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Plasma
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Thermocouple

Title: Experimental observation of heat flux mitigation during divertor detachment in the DIII-D small angle slot divertor

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