The beam emission spectroscopy diagnostic on the DIII-D tokamak

G. McKee; R. Ashley; R. Durst; R. Fonck; M. Jakubowski; K. Tritz; K. Burrell; C. Greenfield; J. Robinson

doi:10.1063/1.1149416

The beam emission spectroscopy diagnostic on the DIII-D tokamak

G. McKee
, R. Ashley
, R. Durst
, R. Fonck
, M. Jakubowski
, K. Tritz
, K. Burrell
, C. Greenfield
, J. Robinson

Research output: Contribution to journal › Article › peer-review

197 Scopus citations

Abstract

A beam emission spectroscopy system has been installed on DIII-D to provide localized density fluctuation measurements for long-wavelength turbulent modes with t≤3 cm^-1 which are typically associated with anomalous radial transport. High signal-to-noise fluctuations measurements are accomplished through use of high speed electronics to maintain a frequency response of over 500 KHz and cryogenically cooled amplifiers and detectors to reduce electronic noise. The optics and neutral beam-sightline geometry have been optimized to allow for spatial resolution of Δr ≤1 cm. In addition, a half-scale two-dimensional (2D) fiber array to measure the 2D turbulent density field, necessary to measure the full S(k_r,k_θ) wavenumber spectra, has been implemented and initial results obtained.

Original language	English
Pages (from-to)	913-916
Number of pages	4
Journal	Review of Scientific Instruments
Volume	70
Issue number	1 II
DOIs	https://doi.org/10.1063/1.1149416
State	Published - Jan 1999
Externally published	Yes

Access to Document

10.1063/1.1149416

Cite this

@article{96d262e4f58a4ed9a85c0179f662166d,

title = "The beam emission spectroscopy diagnostic on the DIII-D tokamak",

abstract = "A beam emission spectroscopy system has been installed on DIII-D to provide localized density fluctuation measurements for long-wavelength turbulent modes with t≤3 cm-1 which are typically associated with anomalous radial transport. High signal-to-noise fluctuations measurements are accomplished through use of high speed electronics to maintain a frequency response of over 500 KHz and cryogenically cooled amplifiers and detectors to reduce electronic noise. The optics and neutral beam-sightline geometry have been optimized to allow for spatial resolution of Δr ≤1 cm. In addition, a half-scale two-dimensional (2D) fiber array to measure the 2D turbulent density field, necessary to measure the full S(kr,kθ) wavenumber spectra, has been implemented and initial results obtained.",

author = "G. McKee and R. Ashley and R. Durst and R. Fonck and M. Jakubowski and K. Tritz and K. Burrell and C. Greenfield and J. Robinson",

year = "1999",

month = jan,

doi = "10.1063/1.1149416",

language = "English",

volume = "70",

pages = "913--916",

journal = "Review of Scientific Instruments",

issn = "0034-6748",

publisher = "American Institute of Physics",

number = "1 II",

}

TY - JOUR

T1 - The beam emission spectroscopy diagnostic on the DIII-D tokamak

AU - McKee, G.

AU - Ashley, R.

AU - Durst, R.

AU - Fonck, R.

AU - Jakubowski, M.

AU - Tritz, K.

AU - Burrell, K.

AU - Greenfield, C.

AU - Robinson, J.

PY - 1999/1

Y1 - 1999/1

N2 - A beam emission spectroscopy system has been installed on DIII-D to provide localized density fluctuation measurements for long-wavelength turbulent modes with t≤3 cm-1 which are typically associated with anomalous radial transport. High signal-to-noise fluctuations measurements are accomplished through use of high speed electronics to maintain a frequency response of over 500 KHz and cryogenically cooled amplifiers and detectors to reduce electronic noise. The optics and neutral beam-sightline geometry have been optimized to allow for spatial resolution of Δr ≤1 cm. In addition, a half-scale two-dimensional (2D) fiber array to measure the 2D turbulent density field, necessary to measure the full S(kr,kθ) wavenumber spectra, has been implemented and initial results obtained.

AB - A beam emission spectroscopy system has been installed on DIII-D to provide localized density fluctuation measurements for long-wavelength turbulent modes with t≤3 cm-1 which are typically associated with anomalous radial transport. High signal-to-noise fluctuations measurements are accomplished through use of high speed electronics to maintain a frequency response of over 500 KHz and cryogenically cooled amplifiers and detectors to reduce electronic noise. The optics and neutral beam-sightline geometry have been optimized to allow for spatial resolution of Δr ≤1 cm. In addition, a half-scale two-dimensional (2D) fiber array to measure the 2D turbulent density field, necessary to measure the full S(kr,kθ) wavenumber spectra, has been implemented and initial results obtained.

UR - https://www.scopus.com/pages/publications/0032607809

U2 - 10.1063/1.1149416

DO - 10.1063/1.1149416

M3 - Article

AN - SCOPUS:0032607809

SN - 0034-6748

VL - 70

SP - 913

EP - 916

JO - Review of Scientific Instruments

JF - Review of Scientific Instruments

IS - 1 II

ER -

The beam emission spectroscopy diagnostic on the DIII-D tokamak

Abstract

Access to Document

Other files and links

Fingerprint

Cite this