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Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment

Publication ,  Journal Article
Smith, DR; Fonck, RJ; McKee, GR; Schoenbeck, N; Uzun-Kaymak, I; Winz, G; Feder, F; Feder, R; Labik, G; Stratton, BC
Published in: IEEE Transactions on Magnetics
January 1, 1994

A beam emission spectroscopy (BES) system has been installed on the National Spherical Torus Experiment (NSTX) to study ion gyroscale ?uctuations. The BES system measures Dαemission from a deuterium neutral heating beam. The system includes two optical views centered at r/a ≈0.45 and 0.85 and aligned to magnetic ?eld pitch angles at the neutral beam. f/1.5 collection optics produce 2-3 cm spot sizes at the neutral beam. The initial channel layout includes radial arrays, poloidal arrays, and two-dimensional grids. Radial arrays provide coverage from r/a≈0.1 to beyond the last-closed flux surface. Photodetectors and digital filters provide high-sensitivity, low-noise measurements at frequencies of up to 1 MHz. The BES system will be a valuable tool for investigating ion gyroscale turbulence and Alfv'n/energetic particle modes on NSTX. © 1994 IEEE

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Published In

IEEE Transactions on Magnetics

DOI

EISSN

1941-0069

ISSN

0018-9464

Publication Date

January 1, 1994

Volume

30

Issue

4

Start / End Page

2665 / 2668

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Smith, D. R., Fonck, R. J., McKee, G. R., Schoenbeck, N., Uzun-Kaymak, I., Winz, G., … Stratton, B. C. (1994). Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment. IEEE Transactions on Magnetics, 30(4), 2665–2668. https://doi.org/10.1109/20.305828
Smith, D. R., R. J. Fonck, G. R. McKee, N. Schoenbeck, I. Uzun-Kaymak, G. Winz, F. Feder, R. Feder, G. Labik, and B. C. Stratton. “Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment.” IEEE Transactions on Magnetics 30, no. 4 (January 1, 1994): 2665–68. https://doi.org/10.1109/20.305828.
Smith DR, Fonck RJ, McKee GR, Schoenbeck N, Uzun-Kaymak I, Winz G, et al. Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment. IEEE Transactions on Magnetics. 1994 Jan 1;30(4):2665–8.
Smith, D. R., et al. “Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment.” IEEE Transactions on Magnetics, vol. 30, no. 4, Jan. 1994, pp. 2665–68. Scopus, doi:10.1109/20.305828.
Smith DR, Fonck RJ, McKee GR, Schoenbeck N, Uzun-Kaymak I, Winz G, Feder F, Feder R, Labik G, Stratton BC. Overview of the beam emission spectroscopy diagnostic system on the National Spherical Torus Experiment. IEEE Transactions on Magnetics. 1994 Jan 1;30(4):2665–2668.

Published In

IEEE Transactions on Magnetics

DOI

EISSN

1941-0069

ISSN

0018-9464

Publication Date

January 1, 1994

Volume

30

Issue

4

Start / End Page

2665 / 2668

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences