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Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U

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Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U. / Vann, Roderick G L; Brunner, Jakob; Ellis, R; Taylor, Gary; Thomas, David Allden.

In: Review of Scientific Instruments, Vol. 87, 11D902, 14.09.2016, p. 1-6.

Research output: Contribution to journalArticle

Harvard

Vann, RGL, Brunner, J, Ellis, R, Taylor, G & Thomas, DA 2016, 'Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U', Review of Scientific Instruments, vol. 87, 11D902, pp. 1-6. https://doi.org/10.1063/1.4962253

APA

Vann, R. G. L., Brunner, J., Ellis, R., Taylor, G., & Thomas, D. A. (2016). Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U. Review of Scientific Instruments, 87, 1-6. [11D902]. https://doi.org/10.1063/1.4962253

Vancouver

Vann RGL, Brunner J, Ellis R, Taylor G, Thomas DA. Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U. Review of Scientific Instruments. 2016 Sep 14;87:1-6. 11D902. https://doi.org/10.1063/1.4962253

Author

Vann, Roderick G L ; Brunner, Jakob ; Ellis, R ; Taylor, Gary ; Thomas, David Allden. / Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U. In: Review of Scientific Instruments. 2016 ; Vol. 87. pp. 1-6.

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@article{c096df6b28914f47a3f76e6940c774d6,
title = "Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U",
abstract = "The Synthetic Aperture Microwave Imaging (SAMI) system is a novel diagnostic consisting of an array of 8 independently-phased antennas. At any one time, SAMI operates at one of 16 frequencies in the range 10-34.5GHz. The imaging beam is steered in software post-shot to create a picture of the entire emission surface. In SAMI’s active probing mode of operation, the plasma edge is illuminated with a monochromatic source and SAMI reconstructs an image of the Doppler back-scattered (DBS) signal. By assuming that density fluctuations are extended along magnetic field lines, and knowing that the strongest back-scattered signals are directed perpendicular to the density fluctuations, SAMI’s 2-D DBS imaging capability can be used to measure the pitch of the edge magnetic field. In this paper we present preliminary pitch angle measurements obtained by SAMI on the Mega-Amp Spherical Tokamak (MAST) at Culham Centre for Fusion Energy and on the National Spherical Torus Experiment Upgrade at Princeton Plasma Physics Laboratory. The results demonstrate encouraging agreement between SAMI and other independent measurements.",
author = "Vann, {Roderick G L} and Jakob Brunner and R Ellis and Gary Taylor and Thomas, {David Allden}",
note = "{\circledC} 2016 Author(s).",
year = "2016",
month = "9",
day = "14",
doi = "10.1063/1.4962253",
language = "English",
volume = "87",
pages = "1--6",
journal = "J Scientific Instruments",
issn = "0034-6748",
publisher = "American Institute of Physics Publising LLC",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Preliminary measurements of the edge magnetic field pitch from 2-D Doppler backscattering in MAST and NSTX-U

AU - Vann, Roderick G L

AU - Brunner, Jakob

AU - Ellis, R

AU - Taylor, Gary

AU - Thomas, David Allden

N1 - © 2016 Author(s).

PY - 2016/9/14

Y1 - 2016/9/14

N2 - The Synthetic Aperture Microwave Imaging (SAMI) system is a novel diagnostic consisting of an array of 8 independently-phased antennas. At any one time, SAMI operates at one of 16 frequencies in the range 10-34.5GHz. The imaging beam is steered in software post-shot to create a picture of the entire emission surface. In SAMI’s active probing mode of operation, the plasma edge is illuminated with a monochromatic source and SAMI reconstructs an image of the Doppler back-scattered (DBS) signal. By assuming that density fluctuations are extended along magnetic field lines, and knowing that the strongest back-scattered signals are directed perpendicular to the density fluctuations, SAMI’s 2-D DBS imaging capability can be used to measure the pitch of the edge magnetic field. In this paper we present preliminary pitch angle measurements obtained by SAMI on the Mega-Amp Spherical Tokamak (MAST) at Culham Centre for Fusion Energy and on the National Spherical Torus Experiment Upgrade at Princeton Plasma Physics Laboratory. The results demonstrate encouraging agreement between SAMI and other independent measurements.

AB - The Synthetic Aperture Microwave Imaging (SAMI) system is a novel diagnostic consisting of an array of 8 independently-phased antennas. At any one time, SAMI operates at one of 16 frequencies in the range 10-34.5GHz. The imaging beam is steered in software post-shot to create a picture of the entire emission surface. In SAMI’s active probing mode of operation, the plasma edge is illuminated with a monochromatic source and SAMI reconstructs an image of the Doppler back-scattered (DBS) signal. By assuming that density fluctuations are extended along magnetic field lines, and knowing that the strongest back-scattered signals are directed perpendicular to the density fluctuations, SAMI’s 2-D DBS imaging capability can be used to measure the pitch of the edge magnetic field. In this paper we present preliminary pitch angle measurements obtained by SAMI on the Mega-Amp Spherical Tokamak (MAST) at Culham Centre for Fusion Energy and on the National Spherical Torus Experiment Upgrade at Princeton Plasma Physics Laboratory. The results demonstrate encouraging agreement between SAMI and other independent measurements.

U2 - 10.1063/1.4962253

DO - 10.1063/1.4962253

M3 - Article

VL - 87

SP - 1

EP - 6

JO - J Scientific Instruments

JF - J Scientific Instruments

SN - 0034-6748

M1 - 11D902

ER -