Initial operation of the NSTX-Upgrade real-time velocity diagnostic

Podestà, M.; Bell, R. E.

doi:10.1088/0741-3335/58/12/125016

Title: Initial operation of the NSTX-Upgrade real-time velocity diagnostic

Journal Article · Thu Nov 03 00:00:00 EDT 2016 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/0741-3335/58/12/125016· OSTI ID:1335461

^[1]; Bell, R. E. ^[1]

Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)

A real-time velocity (RTV) diagnostic based on active charge-exchange recombination spectroscopy is now operational on the National Spherical Torus Experiment-Upgrade (NSTX-U) spherical torus (Menard et al 2012 Nucl. Fusion 52 083015). We designed the system in order to supply plasma velocity data in real time to the NSTX-U plasma control system, as required for the implementation of toroidal rotation control. Our measurements are available from four radii at a maximum sampling frequency of 5 kHz. Post-discharge analysis of RTV data provides additional information on ion temperature, toroidal velocity and density of carbon impurities. Furthermore, examples of physics studies enabled by RTV measurements from initial operations of NSTX-U are discussed.

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

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

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1335461

Alternate ID(s):: OSTI ID: 1330917

Journal Information:: Plasma Physics and Controlled Fusion, Vol. 58, Issue 12; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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Initial operation of the NSTX-Upgrade real-time velocity diagnostic Podesta, M.; Bell, R. E. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1367082	dataset	January 2016
Initial operation of the NSTX-Upgrade real-time velocity diagnostic Podesta, M.; Bell, R. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1562071	dataset	January 2016

Cited By (4)

Feedback control design for non-inductively sustained scenarios in NSTX-U using TRANSP Boyer, M. D.; Andre, R. G.; Gates, D. A. Nuclear Fusion, Vol. 57, Issue 6 https://doi.org/10.1088/1741-4326/aa68e9	journal	April 2017
Fast estimation of ion temperature from EAST charge exchange recombination spectroscopy using neural network Chai, Baoyue; Li, Yingying; Chen, Ze Plasma Science and Technology, Vol. 21, Issue 10 https://doi.org/10.1088/2058-6272/ab2674	journal	July 2019
Initial operation of the NSTX-Upgrade real-time velocity diagnostic Podesta, M.; Bell, R. E. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1367082	dataset	January 2016
Initial operation of the NSTX-Upgrade real-time velocity diagnostic Podesta, M.; Bell, R. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1562071	dataset	January 2016

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NSTX-upgrade
plasma rotation control
real time rotation measurements
charge exchange recombination spectroscopy

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