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Title: SECOND TARGET STATION MODERATOR PERFORMANCE WITH A ROTATING TARGET

Abstract

Oak Ridge National Laboratory manages and operates the Spallation Neutron Source and the High Flux Isotope Reactor, two of the world's most advanced neutron scattering facilities. Both facilities are funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Science, and are available to researchers from all over the world. Delivering cutting edge science requires continuous improvements and development of the facilities and instruments. The SNS was designed from the outset to accommodate an additional target station, or Second Target Station (STS), and an upgraded accelerator feeding proton beams to STS and the existing First Target Station (FTS). Upgrade of the accelerator and the design and construction of STS are being proposed. The presently considered STS configuration is driven with short (<1 s) proton pulses at 10 Hz repetition rate and 467 kW proton beam power, and is optimized for high intensity and high resolution long wavelength neutron applications. STS will allow installation of 22 beamlines and will expand and complement the current national neutron scattering capabilities. In 2015 the STS studies were performed for a compact tungsten target; first a stationary tungsten plate target was analyzed to considerable details and then dropped in favor ofmore » a rotating target. For both target options the proton beam footprint as small as acceptable from mechanical and heat removal aspects is required to arrive at a compact-volume neutron production zone in the target, which is essential for tight coupling of target and moderators and for achieving high-intensity peak neutron fluxes. This paper will present recent STS work with the emphasis on neutronics and moderator performance.« less

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. ORNL
  2. Oak Ridge National Laboratory (ORNL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1364280
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: AccApp'15, Washington D. C., DC, USA, 20151110, 20151113
Country of Publication:
United States
Language:
English
Subject:
Spallation target; moderator brightness; long wavelength neutrons

Citation Formats

Remec, Igor, Gallmeier, Franz X, Rennich, Mark J, McManamy, Thomas J, and Lu, W. SECOND TARGET STATION MODERATOR PERFORMANCE WITH A ROTATING TARGET. United States: N. p., 2016. Web.
Remec, Igor, Gallmeier, Franz X, Rennich, Mark J, McManamy, Thomas J, & Lu, W. SECOND TARGET STATION MODERATOR PERFORMANCE WITH A ROTATING TARGET. United States.
Remec, Igor, Gallmeier, Franz X, Rennich, Mark J, McManamy, Thomas J, and Lu, W. Fri . "SECOND TARGET STATION MODERATOR PERFORMANCE WITH A ROTATING TARGET". United States.
@article{osti_1364280,
title = {SECOND TARGET STATION MODERATOR PERFORMANCE WITH A ROTATING TARGET},
author = {Remec, Igor and Gallmeier, Franz X and Rennich, Mark J and McManamy, Thomas J and Lu, W.},
abstractNote = {Oak Ridge National Laboratory manages and operates the Spallation Neutron Source and the High Flux Isotope Reactor, two of the world's most advanced neutron scattering facilities. Both facilities are funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Science, and are available to researchers from all over the world. Delivering cutting edge science requires continuous improvements and development of the facilities and instruments. The SNS was designed from the outset to accommodate an additional target station, or Second Target Station (STS), and an upgraded accelerator feeding proton beams to STS and the existing First Target Station (FTS). Upgrade of the accelerator and the design and construction of STS are being proposed. The presently considered STS configuration is driven with short (<1 s) proton pulses at 10 Hz repetition rate and 467 kW proton beam power, and is optimized for high intensity and high resolution long wavelength neutron applications. STS will allow installation of 22 beamlines and will expand and complement the current national neutron scattering capabilities. In 2015 the STS studies were performed for a compact tungsten target; first a stationary tungsten plate target was analyzed to considerable details and then dropped in favor of a rotating target. For both target options the proton beam footprint as small as acceptable from mechanical and heat removal aspects is required to arrive at a compact-volume neutron production zone in the target, which is essential for tight coupling of target and moderators and for achieving high-intensity peak neutron fluxes. This paper will present recent STS work with the emphasis on neutronics and moderator performance.},
doi = {},
url = {https://www.osti.gov/biblio/1364280}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {1}
}

Conference:
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