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Title: Progress report: SNS neutronics studies

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:
; ; ;
Publication Date:
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

Citation Formats

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

Conference:
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