Microwave Imaging Reflectometer for TEXTOR

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Description

Understanding the behavior of fluctuations in magnetically confined plasmas is essential to the advancement of turbulence-based transport physics. Though microwave reflectometry has proven to be an extremely useful and sensitive tool for measuring small density fluctuations in some circumstances, this technique has been shown to have limited viability for large amplitude, high kq fluctuations and/or core measurements. To this end, a new instrument based on 2-D imaging reflectometry has been developed to measure density fluctuations over an extended plasma region in the TEXTOR tokamak. This technique is made possible by collecting an extended spectrum of reflected waves with large-aperture imaging ... continued below

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596 Kilobytes pages

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Munsat, T.; Mazzucato, E.; Park, H.; Deng, B.H.; Domier, C.W.; N.C. Luhmann, Jr. et al. July 9, 2002.

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Description

Understanding the behavior of fluctuations in magnetically confined plasmas is essential to the advancement of turbulence-based transport physics. Though microwave reflectometry has proven to be an extremely useful and sensitive tool for measuring small density fluctuations in some circumstances, this technique has been shown to have limited viability for large amplitude, high kq fluctuations and/or core measurements. To this end, a new instrument based on 2-D imaging reflectometry has been developed to measure density fluctuations over an extended plasma region in the TEXTOR tokamak. This technique is made possible by collecting an extended spectrum of reflected waves with large-aperture imaging optics. Details of the imaging reflectometry concept, as well as technical details of the TEXTOR instrument will be presented. Data from roof-of-principle experiments on TEXTOR using a prototype system is presented, as well as results from a systematic off-line study of the advantages and limitations of the imaging reflectometer.

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596 Kilobytes pages

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INIS; OSTI as DE00807252

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  • Other Information: PBD: 9 Jul 2002

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  • Report No.: PPPL-3721
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/807252 | External Link
  • Office of Scientific & Technical Information Report Number: 807252
  • Archival Resource Key: ark:/67531/metadc740747

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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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  • July 9, 2002

Added to The UNT Digital Library

  • Oct. 18, 2015, 6:40 p.m.

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  • April 18, 2016, 1:01 p.m.

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Munsat, T.; Mazzucato, E.; Park, H.; Deng, B.H.; Domier, C.W.; N.C. Luhmann, Jr. et al. Microwave Imaging Reflectometer for TEXTOR, report, July 9, 2002; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc740747/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.