Program status 4. quarter -- FY 1995: ITER and technology

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A scoping level analysis of heat exhaust for the DEMO divertor strawman design was performed. It was concluded that to reduce the surface heat flux to the divertor, a combination of impurities radiation, compression, and increase in SOL electron density will have to be used. GA completed the preparation on the description of the helium-cooled, lithium breeder and V-alloy/ferritic steel DEMO blanket design focusing on addressing the issues of materials compatibility and reliability of high pressure gas system. Using ferritic steel, a helium Li-breeder design can handle neutron wall loading in the range of 6 to 8 MW/M{sup 2}. With ... continued below

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22 p.

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Creator: Unknown. October 24, 1995.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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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

A scoping level analysis of heat exhaust for the DEMO divertor strawman design was performed. It was concluded that to reduce the surface heat flux to the divertor, a combination of impurities radiation, compression, and increase in SOL electron density will have to be used. GA completed the preparation on the description of the helium-cooled, lithium breeder and V-alloy/ferritic steel DEMO blanket design focusing on addressing the issues of materials compatibility and reliability of high pressure gas system. Using ferritic steel, a helium Li-breeder design can handle neutron wall loading in the range of 6 to 8 MW/M{sup 2}. With advanced material like V-alloy, neutron wall loading in the range of 9 to 11 MW/m{sup 2} can be handled by similar design. The design of all components for a combline antenna for JFT-2M has been completed. Completion of the fabrication is scheduled for 11/95. The 4in x 4in 110 GHz window was fabricated and delivered to CPI (Varian) for testing. The second DiMES sample with Be/W striped coatings was exposed to four DIII-D plasma shots. Deuterium areal density measurements by W. Wampler of SNL showed the results from Be/W and Mo/V coated DiMES samples. High uptake of about 2x10{sup 17} atoms/cm{sup 2} was recorded for V. Be and C were lower by a factor of two, and Mo and W were lowest by about a factor of ten. An ITER magnetic coil has been fabricated and shipped to Brookhaven awaiting time for radiation testing. High-Nicalon and Super-Nicalon SiC fibers were received from PNL. Fabrication of different composite samples with different coatings is proceeding.

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22 p.

Notes

OSTI as DE96012275

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  • Other Information: PBD: 24 Oct 1995

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  • Other: DE96012275
  • Report No.: GA-C--19572(10/24/95)
  • Grant Number: AC03-89ER52153
  • DOI: 10.2172/257429 | External Link
  • Office of Scientific & Technical Information Report Number: 257429
  • Archival Resource Key: ark:/67531/metadc666098

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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

  • October 24, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 18, 2016, 6:02 p.m.

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Program status 4. quarter -- FY 1995: ITER and technology, report, October 24, 1995; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc666098/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.