Photoneutron production in electron beam stop for dual-axis radiographic hydrotest facility (DARHT)

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Description

A beam stop design for an electron linear accelerator was analyzed from the perspective of photoneutron production and subsequent dose. Sophisticated nuclear data modeling codes were used to generate the photoneutron production cross sections and spectra that were then used in MCNP transport calculations. The resulting neutron dose exceeded limits for workers present in the experimental area while the accelerators are producing electron beam pulses. Therefore, the beam stop was redesigned to limit doses to acceptable values, consistent with the ALARA philosophy.

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11 p.

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Chadwick, M.B.; Brown, T.H. & Little, R.C. March 1, 1998.

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Description

A beam stop design for an electron linear accelerator was analyzed from the perspective of photoneutron production and subsequent dose. Sophisticated nuclear data modeling codes were used to generate the photoneutron production cross sections and spectra that were then used in MCNP transport calculations. The resulting neutron dose exceeded limits for workers present in the experimental area while the accelerators are producing electron beam pulses. Therefore, the beam stop was redesigned to limit doses to acceptable values, consistent with the ALARA philosophy.

Physical Description

11 p.

Notes

INIS; OSTI as DE98004376

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  • Radiation protection and shielding topical meeting: technologies for the new century, Nashville, TN (United States), 19-23 Apr 1998

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  • Other: DE98004376
  • Report No.: LA-UR--97-5174
  • Report No.: CONF-980403--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 650337
  • Archival Resource Key: ark:/67531/metadc707488

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • March 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 26, 2016, 3:14 p.m.

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Chadwick, M.B.; Brown, T.H. & Little, R.C. Photoneutron production in electron beam stop for dual-axis radiographic hydrotest facility (DARHT), article, March 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc707488/: accessed August 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.