Progress report: SNS neutronics studies

Title: Progress report: SNS neutronics studies

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Abstract

The proposed Spallation Neutron Source (SNS) facility will consist of two parts: (1) a high-energy (1-GeV) and high-powered (1-MW) proton accelerator (linac) and accumulator ring, and (2) a target station that produces low-energy (< 2-eV) neutrons and delivers them to the neutron scattering instruments. It will be a 60-Hz facility, delivering 6 x 10{sup 15} protons each second in 60 1-{micro}s pulses with a linac length of 490 m and an accumulator ring circumference of 220 m. This paper deals with the second part of the facility: the design and development of the SNS target station proposed for Oak Ridge National Laboratory (ORNL). Some of the more recent work will be presented, including a premoderator study, validation comparisons with experiment, sensitivity studies of cryogenic H{sub 2} moderator output to assumed ortho/para admixtures, and the construction of a more detailed model geometry.

Authors:: Charlton, L A; Barnes, J M; Johnson, J O; Gabriel, T A

Publication Date:: 1998-11-01

Research Org.:: Oak Ridge National Lab., Computational Physics and Engineering Div., TN (United States)

Sponsoring Org.:: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States)

OSTI Identifier:: 677205

Report Number(s):: ORNL/CP-99605; CONF-980680-
ON: DE99000238; TRN: 99:002251

DOE Contract Number:: AC05-96OR22464

Resource Type:: Conference

Resource Relation:: Conference: ICANS: 14. conference on the international collaboration on advanced neutron sources, Argonne, IL (United States), 14-19 Jun 1998; Other Information: PBD: [1998]

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; 07 ISOTOPE AND RADIATION SOURCE TECHNOLOGY; NEUTRON SOURCES; STORAGE RINGS; DESIGN; TARGET CHAMBERS; MODERATORS; CRYOGENICS; COMPARATIVE EVALUATIONS; SENSITIVITY ANALYSIS

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                    Charlton, L A, Barnes, J M, Johnson, J O, and Gabriel, T A. Progress report: SNS neutronics studies.  United States: N. p., 1998. 
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                    Charlton, L A, Barnes, J M, Johnson, J O, & Gabriel, T A. Progress report: SNS neutronics studies.  United States.

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                    Charlton, L A, Barnes, J M, Johnson, J O, and Gabriel, T A. Sun .  
        "Progress report: SNS neutronics studies".  United States.  https://www.osti.gov/servlets/purl/677205.

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@article{osti_677205,

  title        = {Progress report: SNS neutronics studies},

  author       = {Charlton, L A and Barnes, J M and Johnson, J O and Gabriel, T A},

  abstractNote = {The proposed Spallation Neutron Source (SNS) facility will consist of two parts: (1) a high-energy (1-GeV) and high-powered (1-MW) proton accelerator (linac) and accumulator ring, and (2) a target station that produces low-energy (< 2-eV) neutrons and delivers them to the neutron scattering instruments. It will be a 60-Hz facility, delivering 6 x 10{sup 15} protons each second in 60 1-{micro}s pulses with a linac length of 490 m and an accumulator ring circumference of 220 m. This paper deals with the second part of the facility: the design and development of the SNS target station proposed for Oak Ridge National Laboratory (ORNL). Some of the more recent work will be presented, including a premoderator study, validation comparisons with experiment, sensitivity studies of cryogenic H{sub 2} moderator output to assumed ortho/para admixtures, and the construction of a more detailed model geometry.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/677205},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {11}

}

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