DIII-D Thomson Scattering Diagnostic Data Acquisition, Processing and Analysis Software

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One of the diagnostic systems critical to the success of the DIII-D tokamak experiment is the Thomson scattering diagnostic. This diagnostic is unique in that it measures local electron temperature and density: (1) at multiple locations within the tokamak plasma; and (2) at different times throughout the plasma duration. Thomson ''raw'' data are digitized signals of scattered light, measured at different times and locations, from the laser beam paths fired into the plasma. Real-time acquisition of this data is performed by specialized hardware. Once obtained, the raw data are processed into meaningful temperature and density values which can be analyzed ... continued below

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4 p.

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Middaugh, K.R.; Bray, B.D.; Hsieh, C.L.; McHarg, B.B., Jr. & Penaflor, B.G. June 1, 1999.

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  • General Atomic Company
    Publisher Info: General Atomics, San Diego, CA (United States)
    Place of Publication: San Diego, California

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Description

One of the diagnostic systems critical to the success of the DIII-D tokamak experiment is the Thomson scattering diagnostic. This diagnostic is unique in that it measures local electron temperature and density: (1) at multiple locations within the tokamak plasma; and (2) at different times throughout the plasma duration. Thomson ''raw'' data are digitized signals of scattered light, measured at different times and locations, from the laser beam paths fired into the plasma. Real-time acquisition of this data is performed by specialized hardware. Once obtained, the raw data are processed into meaningful temperature and density values which can be analyzed for measurement quality. This paper will provide an overview of the entire Thomson scattering diagnostic software and will focus on the data acquisition, processing, and analysis software implementation. The software falls into three general categories: (1) Set-up and Control: Initializes and controls all Thomson hardware and software, synchronizes with other DIII-D computers, and invokes other Thomson software as appropriate. (2) Data Acquisition and Processing: Obtains raw measured data from memory and processes it into temperature and density values. (3) Analysis: Provides a graphical user interface in which to perform analysis and sophisticated plotting of analysis parameters.

Physical Description

4 p.

Notes

INIS; OSTI as DE00767061

Medium: P; Size: 4 pages

Source

  • 11th IEEE/NPSS Real Time Conference, Santa Fe, NM (US), 06/14/1999--06/18/1999

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  • Report No.: GA-A23147
  • Grant Number: AC03-99ER54463
  • Office of Scientific & Technical Information Report Number: 767061
  • Archival Resource Key: ark:/67531/metadc717698

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 1, 1999

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 10, 2017, 7:51 p.m.

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Middaugh, K.R.; Bray, B.D.; Hsieh, C.L.; McHarg, B.B., Jr. & Penaflor, B.G. DIII-D Thomson Scattering Diagnostic Data Acquisition, Processing and Analysis Software, article, June 1, 1999; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc717698/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.