Validation of the strike point position estimation with the local expansion method for MAST upgrade on the DIII-D tokamak

Anand, H.; Eldon, D.; Kochan, M.; McArdle, G.; Pangione, L.; Wang, H. Q.

doi:10.1016/j.fusengdes.2022.113086

Title: Validation of the strike point position estimation with the local expansion method for MAST upgrade on the DIII-D tokamak

Journal Article · 07 March 2022 · Fusion Engineering and Design

DOI: https://doi.org/10.1016/j.fusengdes.2022.113086 · OSTI ID:1977151

^[1];

^[2]; Kochan, M. ^[3]; McArdle, G. ^[3]; Pangione, L. ^[3]; Wang, H. Q. ^[2]

General Atomics, San Diego, CA (United States); General Atomics
General Atomics, San Diego, CA (United States)
Culham Science Centre, Abingdon (United Kingdom). Culham Centre for Fusion Energy (CCFE), EURATOM/UKAEA Fusion Association

A local expansion method has been proposed for estimating the strike point position for the advanced divertor configuration on the MAST Upgrade tokamak. The paper discusses the application and assesses the performance of the technique on a long-legged divertor plasma configuration on an operating device - the DIII-D tokamak. A comparison of the spatial location of the outer strike point estimated with the local expansion method against the plasma boundary reconstruction and divertor diagnostics on the DIII-D tokamak is reported. A good agreement with the equilibrium reconstruction and diagnostic data is achieved with respect to estimation of the spatial location of the outer strike point for the long-legged divertor plasma discharge.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: General Atomics, San Diego, CA (United States)

Sponsoring Organization:: Engineering and Physical Sciences Research Council (EPSRC); USDOE Office of Science (SC), Fusion Energy Sciences (FES)

Grant/Contract Number:: SC0018992

OSTI ID:: 1977151

Journal Information:: Fusion Engineering and Design, Journal Name: Fusion Engineering and Design Journal Issue: C Vol. 177; ISSN 0920-3796

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (19)

Tokamak equilibrium reconstruction code LIUQE and its real time implementation Moret, J. -M.; Duval, B. P.; Le, H. B. Fusion Engineering and Design, Vol. 91 https://doi.org/10.1016/j.fusengdes.2014.09.019	journal	February 2015
MAST Upgrade – Construction Status Milnes, Joe; Ayed, Nizar Ben; Dhalla, Fahim Fusion Engineering and Design, Vol. 96-97 https://doi.org/10.1016/j.fusengdes.2015.03.002	journal	October 2015
The MAST Upgrade plasma control system McArdle, Graham; Pangione, Luigi; Kochan, Martin Fusion Engineering and Design, Vol. 159 https://doi.org/10.1016/j.fusengdes.2020.111764	journal	October 2020
High precision strike point control to support experiments in the DIII-D small angle slot divertor Eldon, D.; Hyatt, A. W.; Covele, B. Fusion Engineering and Design, Vol. 160 https://doi.org/10.1016/j.fusengdes.2020.111797	journal	November 2020
MAST-upgrade divertor facility and assessing performance of long-legged divertors Fishpool, G.; Canik, J.; Cunningham, G. Journal of Nuclear Materials, Vol. 438 https://doi.org/10.1016/j.jnucmat.2013.01.067	journal	July 2013
Magnetic diagnostic system of the DIII-D tokamak Strait, E. J. Review of Scientific Instruments, Vol. 77, Issue 2 https://doi.org/10.1063/1.2166493	journal	February 2006
High heat flux Langmuir probe array for the DIII-D divertor plates Watkins, J. G.; Taussig, D.; Boivin, R. L. Review of Scientific Instruments, Vol. 79, Issue 10 https://doi.org/10.1063/1.2982423	journal	October 2008
Super-X divertors and high power density fusion devices Valanju, P. M.; Kotschenreuther, M.; Mahajan, S. M. Physics of Plasmas, Vol. 16, Issue 5 https://doi.org/10.1063/1.3110984	journal	May 2009
Two-dimensional electric fields and drifts near the magnetic separatrix in divertor tokamaks Rognlien, T. D.; Ryutov, D. D.; Mattor, N. Physics of Plasmas, Vol. 6, Issue 5 https://doi.org/10.1063/1.873488	journal	May 1999
Reconstruction of current profile parameters and plasma shapes in tokamaks Lao, L. L.; St. John, H.; Stambaugh, R. D. Nuclear Fusion, Vol. 25, Issue 11 https://doi.org/10.1088/0029-5515/25/11/007	journal	November 1985
Local expansion method for fast plasma boundary identification in JET O'Brien, D. P.; Ellis, J. J.; Lingertat, J. Nuclear Fusion, Vol. 33, Issue 3 https://doi.org/10.1088/0029-5515/33/3/I08	journal	March 1993
Real time equilibrium reconstruction for tokamak discharge control Ferron, J. R.; Walker, M. L.; Lao, L. L. Nuclear Fusion, Vol. 38, Issue 7 https://doi.org/10.1088/0029-5515/38/7/308	journal	July 1998
A design retrospective of the DIII-D tokamak Luxon, J. L. Nuclear Fusion, Vol. 42, Issue 5 https://doi.org/10.1088/0029-5515/42/5/313	journal	May 2002
Plasma shape control on the National Spherical Torus Experiment (NSTX) using real-time equilibrium reconstruction Gates, D. A.; Ferron, J. R.; Bell, M. Nuclear Fusion, Vol. 46, Issue 1 https://doi.org/10.1088/0029-5515/46/1/002	journal	December 2005
A local expansion method applied to fast plasma boundary reconstruction for EAST Guo, Yong; Xiao, Bingjia; Luo, Zhengping Plasma Physics and Controlled Fusion, Vol. 53, Issue 10 https://doi.org/10.1088/0741-3335/53/10/105015	journal	September 2011
Real-time control of divertor detachment in H-mode with impurity seeding using Langmuir probe feedback in JET-ITER-like wall Guillemaut, C.; Lennholm, M.; Harrison, J. Plasma Physics and Controlled Fusion, Vol. 59, Issue 4 https://doi.org/10.1088/1361-6587/aa5951	journal	February 2017
A General Theory of the Plasma of an Arc Tonks, Lewi; Langmuir, Irving Physical Review, Vol. 34, Issue 6 https://doi.org/10.1103/PhysRev.34.876	journal	September 1929
Inter-ELM Power Decay Length for JET and ASDEX Upgrade: Measurement and Comparison with Heuristic Drift-Based Model Eich, T.; Sieglin, B.; Scarabosio, A. Physical Review Letters, Vol. 107, Issue 21 https://doi.org/10.1103/PhysRevLett.107.215001	journal	November 2011
MHD Equilibrium Reconstruction in the DIII-D Tokamak Lao, L. L.; John, H. E. St.; Peng, Q. Fusion Science and Technology, Vol. 48, Issue 2 https://doi.org/10.13182/FST48-968	journal	October 2005

Similar Records

Characterization of energetic deuterium striking the divertor of the DIII-D tokamak

Technical Report · 1996 · OSTI ID:244619

Bastasz, R; Wampler, W R; Whaley, J A; +5 more

First snowflake divertor experiments in MAST-U tokamak

Journal Article · 2022 · Nuclear Materials and Energy · OSTI ID:1894553

Soukhanovskii, V. A.; Cunningham, G.; Harrison, J. R.; +2 more

Real-time plasma equilibrium reconstruction and shape control for the MAST Upgrade tokamak

Journal Article · 2024 · Nuclear Fusion · OSTI ID:2395956

Anand, H.; Wehner, W.; Eldon, D.; +17 more

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
divertor
local flux expansion
plasma control
real-time
reconstruction
strike point

Title: Validation of the strike point position estimation with the local expansion method for MAST upgrade on the DIII-D tokamak

Citation Formats

References (19)

Similar Records

Related Subjects