Neutron activation for ITER

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There are three primary goals for the Neutron Activation system for ITER: maintain a robust relative measure of fusion power with stability and high dynamic range (7 orders of magnitude); allow an absolute calibration of fusion power (energy); and provide a flexible and reliable system for materials testing. The nature of the activation technique is such that stability and high dynamic range can be intrinsic properties of the system. It has also been the technique that demonstrated (on JET and TFTR) the highest accuracy neutron measurements in DT operation. Since the gamma-ray detectors are not located on the tokamak and ... continued below

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13 p.

Creation Information

Barnes, C.W.; Loughlin, M.J. & Nishitani, Takeo April 29, 1996.

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  • Barnes, C.W. Los Alamos National Lab., NM (United States)
  • Loughlin, M.J. JET Joint Undertaking, Abingdon (United Kingdom)
  • Nishitani, Takeo Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment

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Description

There are three primary goals for the Neutron Activation system for ITER: maintain a robust relative measure of fusion power with stability and high dynamic range (7 orders of magnitude); allow an absolute calibration of fusion power (energy); and provide a flexible and reliable system for materials testing. The nature of the activation technique is such that stability and high dynamic range can be intrinsic properties of the system. It has also been the technique that demonstrated (on JET and TFTR) the highest accuracy neutron measurements in DT operation. Since the gamma-ray detectors are not located on the tokamak and are therefore amenable to accurate characterization, and if material foils are placed very close to the ITER plasma with minimum scattering or attenuation, high overall accuracy in the fusion energy production (7--10%) should be achievable on ITER. In the paper, a conceptual design is presented. A system is shown to be capable of meeting these three goals, also detailed design issues remain to be solved.

Physical Description

13 p.

Notes

INIS; OSTI as DE96011215

Source

  • 11. high temperature plasma diagnostic conference, Monterey, CA (United States), 13-17 Jun 1996

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  • Other: DE96011215
  • Report No.: LA-UR--96-1608
  • Report No.: CONF-9606208--3
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 244641
  • Archival Resource Key: ark:/67531/metadc672535

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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.

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Creation Date

  • April 29, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 25, 2016, 9:50 p.m.

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Barnes, C.W.; Loughlin, M.J. & Nishitani, Takeo. Neutron activation for ITER, article, April 29, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc672535/: accessed July 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.