Neutronic Design Calculations on Moderators for the Spallation Neutron Source (SNS)

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The Spallation Neutron Source (SNS) to be built at the Oak Ridge National Laboratory will provide an intense source of neutrons for a large variety of experiments. It consists of a high-energy (1-GeV) and high-power ({approximately}1-MW) proton accelerator, an accumulator ring, together with a target station and an experimental area. In the target itself, the proton beam will produce neutrons via the spallation process and these will be converted to low-energy (<2-eV) neutrons in moderators located close to the target. Current plans are to have two liquid-hydrogen (20-K) moderators and two room-temperature H{sub 2}O moderators. Extensive engineering design work has ... continued below

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6 pages

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Murphy, D.B. November 14, 1999.

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Description

The Spallation Neutron Source (SNS) to be built at the Oak Ridge National Laboratory will provide an intense source of neutrons for a large variety of experiments. It consists of a high-energy (1-GeV) and high-power ({approximately}1-MW) proton accelerator, an accumulator ring, together with a target station and an experimental area. In the target itself, the proton beam will produce neutrons via the spallation process and these will be converted to low-energy (<2-eV) neutrons in moderators located close to the target. Current plans are to have two liquid-hydrogen (20-K) moderators and two room-temperature H{sub 2}O moderators. Extensive engineering design work has been conducted on the moderator vessels. For our studies we have produced realistic neutronic representations of these moderators. We report on neutronic studies conducted on these representations of the moderators using Monte Carlo simulation techniques.

Physical Description

6 pages

Notes

INIS; OSTI as DE00009082

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  • American Nuclear Society Winter Meeting on Nuclear Applications of Accelerator Technology (AccApp'99), Long Beach, CA (US), 11/14/1999--11/18/1999

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  • Report No.: ORNL/CP-104008
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 9082
  • Archival Resource Key: ark:/67531/metadc794450

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  • November 14, 1999

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • Jan. 19, 2016, 8:28 p.m.

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Murphy, D.B. Neutronic Design Calculations on Moderators for the Spallation Neutron Source (SNS), article, November 14, 1999; Tennessee. (digital.library.unt.edu/ark:/67531/metadc794450/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.