Spatial and temporal analysis of DIII-D 3D magnetic diagnostic data

Strait, E. J.; King, J. D.; Hanson, J. M.; Logan, N. C.

doi:10.1063/1.4960419

Title: Spatial and temporal analysis of DIII-D 3D magnetic diagnostic data

Journal Article · Thu Aug 11 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4960419· OSTI ID:1309459

Strait, E. J. ^[1]; King, J. D. ^[2]; Hanson, J. M. ^[3]; Logan, N. C. ^[4]

General Atomics, San Diego, CA (United States)
General Atomics, San Diego, CA (United States); U.S. Dept. of Energy, Germantown, MD (United States)
Columbia Univ., New York, NY (United States)
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

In an extensive set of magnetic diagnostics in DIII-D we aimed at measuring non-axisymmetric “3D” features of tokamak plasmas, with typical amplitudes ~10^-3 to 10^-5 of the total magnetic field. Here, we describe hardware and software techniques used at DIII-D to condition the individual signals, and analysis to estimate the spatial structure from an ensemble of discrete measurements. Furthermore, applications of the analysis include detection of nonrotating MHD instabilities, plasma control, and validation of MHD stability and 3D equilibrium models

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Research Organization:: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States); General Atomics, San Diego, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466; FG02-04ER54761; FC02-04ER54698

OSTI ID:: 1309459

Alternate ID(s):: OSTI ID: 1371884

Journal Information:: Review of Scientific Instruments, Vol. 87, Issue 11; ISSN 0034-6748

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

Country of Publication:: United States

Language:: English

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Cited by: 16 works

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References (11)

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An upgrade of the magnetic diagnostic system of the DIII-D tokamak for non-axisymmetric measurements King, J. D.; Strait, E. J.; Boivin, R. L. Review of Scientific Instruments, Vol. 85, Issue 8 https://doi.org/10.1063/1.4891817	journal	August 2014
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Modal analysis of the full poloidal structure of the plasma response to n = 2 magnetic perturbations Munaretto, S.; Strait, E. J.; Haskey, S. R. Physics of Plasmas, Vol. 25, Issue 7 https://doi.org/10.1063/1.5029381	journal	July 2018
On the scattering correction of fast-ion D-alpha signals on NSTX-U Hao, G. Z.; Heidbrink, W. W.; Liu, D. Review of Scientific Instruments, Vol. 89, Issue 6 https://doi.org/10.1063/1.5031879	journal	June 2018
Conceptual design of extended magnetic probe set to improve 3D field detection in NSTX-U Munaretto, S.; Strait, E. J.; Lanctot, M. J. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5036942	journal	October 2018
$\mathscr{H}_2$ optimal control techniques for resistive wall mode feedback in tokamaks Clement, Mitchell; Hanson, Jeremy; Bialek, Jim Nuclear Fusion, Vol. 58, Issue 4 https://doi.org/10.1088/1741-4326/aaaecd	journal	February 2018
Relationship between locked modes and thermal quenches in DIII-D Sweeney, R.; Choi, W.; Austin, M. Nuclear Fusion, Vol. 58, Issue 5 https://doi.org/10.1088/1741-4326/aaaf0a	journal	March 2018
Magnetic polarization measurements of the multi-modal plasma response to 3D fields in the EAST tokamak Logan, N. C.; Cui, L.; Wang, H. Nuclear Fusion, Vol. 58, Issue 7 https://doi.org/10.1088/1741-4326/aac129	journal	May 2018
Edge localized mode suppression and plasma response using mixed toroidal harmonic resonant magnetic perturbations in DIII-D Gu, S.; Sun, Y.; Paz-Soldan, C. Nuclear Fusion, Vol. 59, Issue 2 https://doi.org/10.1088/1741-4326/aaf5a3	journal	January 2019

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