Spallation Neutron Source Beam Dump Radiation Shielding Analysis

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Preliminary shielding calculations were performed to establish the dimensions of the radiation shielding surrounding the three Spallation Neutron Source (SNS) beam stops. Steel shielding thicknesses were sized to give dose levels of 1, 2, and 5 mrem/h at the top of the shield, and, to provide enough shielding along the sides and bottom of the beam dump so that soil activation is not a problem. It was concluded that 144 in. of steel shielding is needed above the beam stop. The thickness of the concrete floor in the service building above the dump was not a part of these calculations. ... continued below

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Johnson, J. O. February 21, 2000.

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Description

Preliminary shielding calculations were performed to establish the dimensions of the radiation shielding surrounding the three Spallation Neutron Source (SNS) beam stops. Steel shielding thicknesses were sized to give dose levels of 1, 2, and 5 mrem/h at the top of the shield, and, to provide enough shielding along the sides and bottom of the beam dump so that soil activation is not a problem. It was concluded that 144 in. of steel shielding is needed above the beam stop. The thickness of the concrete floor in the service building above the dump was not a part of these calculations. This shielding design is current as of January 2000.

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  • Report No.: SNS 106100200-TR0002-R00
  • Grant Number: DE-AC05-00OR22725
  • DOI: 10.2172/885859 | External Link
  • Office of Scientific & Technical Information Report Number: 885859
  • Archival Resource Key: ark:/67531/metadc892139

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Office of Scientific & Technical Information Technical Reports

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Creation Date

  • February 21, 2000

Added to The UNT Digital Library

  • Sept. 23, 2016, 2:42 p.m.

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  • Dec. 9, 2016, 8:46 p.m.

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Johnson, J. O. Spallation Neutron Source Beam Dump Radiation Shielding Analysis, report, February 21, 2000; [Tennessee]. (digital.library.unt.edu/ark:/67531/metadc892139/: accessed November 13, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.