Utilization of vanadium alloys in the DIII-D Radiative Divertor Program

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Vanadium alloys are attractive candidate structural materials for fusion power plants because of their potential for minimum environmental impact due to low neutron activation and rapid activation decay. They also possess favorable material properties for operation in a fusion environment. General Atomics (GA), in conjunction with Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL), has developed a plan for the utilization of vanadium alloys as part of the Radiative Divertor (RD) upgrade for the DIII-D tokamak. The plan will be carried out in conjunction with General Atomics and the Materials Program of the US Department of Energy (DOE). ... continued below

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16 p.

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Smith, J. P.; Johnson, W. R.; Stambaugh, R. D.; Trester, P. W.; Smith, D. & Bloom, E. October 1995.

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Vanadium alloys are attractive candidate structural materials for fusion power plants because of their potential for minimum environmental impact due to low neutron activation and rapid activation decay. They also possess favorable material properties for operation in a fusion environment. General Atomics (GA), in conjunction with Argonne National Laboratory (ANL) and Oak Ridge National Laboratory (ORNL), has developed a plan for the utilization of vanadium alloys as part of the Radiative Divertor (RD) upgrade for the DIII-D tokamak. The plan will be carried out in conjunction with General Atomics and the Materials Program of the US Department of Energy (DOE). This application of a vanadium alloy will provide a meaningful step in the development of advanced materials for fusion power devices by: (1) developing necessary materials processing technology for the fabrication of large vanadium alloy components, and (2) demonstrating the in-service behavior of a vanadium alloy (V-4Cr-4Ti) in a tokamak environment. The program consists of three phases: first, small vanadium alloy coupon samples will be exposed in DIII-D at positions in the vessel floor and within the pumping plenum region of the existing divertor structure; second, a small vanadium alloy component will be installed in the existing divertor, and third, during the forthcoming Radiative Divertor modification, scheduled for completion in mid-1997, the upper section of the new double-null, slotted divertor will be fabricated from vanadium alloy product forms. This program also includes research and development (R and D) efforts to support fabrication development and to resolve key issues related to environmental effects.

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16 p.

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INIS; OSTI as DE96005589

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  • ICFRM-7: international conference on fusion reactor materials, Obninsk (Russian Federation), 25-29 Sep 1995

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  • Other: DE96005589
  • Report No.: GA--A22166
  • Report No.: CONF-950961--7
  • Grant Number: AC03-89ER51114;W-31109-ENG-38;AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 195736
  • Archival Resource Key: ark:/67531/metadc666248

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  • October 1995

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  • June 29, 2015, 9:42 p.m.

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  • Aug. 1, 2016, 6:41 p.m.

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Smith, J. P.; Johnson, W. R.; Stambaugh, R. D.; Trester, P. W.; Smith, D. & Bloom, E. Utilization of vanadium alloys in the DIII-D Radiative Divertor Program, article, October 1995; San Diego, California. (digital.library.unt.edu/ark:/67531/metadc666248/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.