skip to main content
DOE Data Explorer title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: On the scattering correction of fast-ion D-alpha signal on NSTX-U

Abstract

Analysis of fast-ion D-alpha (FIDA) data on National Spherical Torus Experiment-Upgrade (NSTX-U) shows that the cold Dα line contaminates the FIDA baseline. The scattered light is comparable to the FIDA emission. A scattering correction is required to extract the FIDA signal. Two methods that relate the scattered light contamination to the intensity of the cold Dα line are employed. One method uses laboratory measurements with a calibration lamp; the other method uses data acquired during plasma operation and singular value decomposition analysis. After correction, both the FIDA spectra and spatial profile are in better agreement with theoretical predictions.

Authors:
; ; ; ; ;
Publication Date:
DOE Contract Number:  
AC02-09CH11466
Product Type:
Dataset
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
U. S. Department of Energy
Keywords:
Single value decomposition (SVD)
OSTI Identifier:
1562065
DOI:
10.11578/1562065

Citation Formats

Hao, G Z, Heidbrink, W W, Liu, D, Stagner, L, Podesta, M, and Bortolon, A. On the scattering correction of fast-ion D-alpha signal on NSTX-U. United States: N. p., 2018. Web. doi:10.11578/1562065.
Hao, G Z, Heidbrink, W W, Liu, D, Stagner, L, Podesta, M, & Bortolon, A. On the scattering correction of fast-ion D-alpha signal on NSTX-U. United States. doi:10.11578/1562065.
Hao, G Z, Heidbrink, W W, Liu, D, Stagner, L, Podesta, M, and Bortolon, A. 2018. "On the scattering correction of fast-ion D-alpha signal on NSTX-U". United States. doi:10.11578/1562065. https://www.osti.gov/servlets/purl/1562065. Pub date:Fri Jun 01 00:00:00 EDT 2018
@article{osti_1562065,
title = {On the scattering correction of fast-ion D-alpha signal on NSTX-U},
author = {Hao, G Z and Heidbrink, W W and Liu, D and Stagner, L and Podesta, M and Bortolon, A},
abstractNote = {Analysis of fast-ion D-alpha (FIDA) data on National Spherical Torus Experiment-Upgrade (NSTX-U) shows that the cold Dα line contaminates the FIDA baseline. The scattered light is comparable to the FIDA emission. A scattering correction is required to extract the FIDA signal. Two methods that relate the scattered light contamination to the intensity of the cold Dα line are employed. One method uses laboratory measurements with a calibration lamp; the other method uses data acquired during plasma operation and singular value decomposition analysis. After correction, both the FIDA spectra and spatial profile are in better agreement with theoretical predictions.},
doi = {10.11578/1562065},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}

Dataset:

Save / Share:

Works referenced in this record:

On the scattering correction of fast-ion D-alpha signals on NSTX-U
journal, June 2018

  • Hao, G. Z.; Heidbrink, W. W.; Liu, D.
  • Review of Scientific Instruments, Vol. 89, Issue 6
  • DOI: 10.1063/1.5031879

    Works referencing / citing this record:

    On the scattering correction of fast-ion D-alpha signals on NSTX-U
    journal, June 2018

    • Hao, G. Z.; Heidbrink, W. W.; Liu, D.
    • Review of Scientific Instruments, Vol. 89, Issue 6
    • DOI: 10.1063/1.5031879

    On the scattering correction of fast-ion D-alpha signals on NSTX-U
    journal, June 2018