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In-Pile He-4 Source for UCN Production at the ESS

Klinkby, Esben; Batkov, Konstantin LU ; Mezei, Ferenc LU ; Pitcher, Eric LU ; Schonfeldt, Troels; Takibayev, Alan LU and Zanini, Luca LU (2014) In Advances in High Energy Physics
Abstract
ESS will be a premier neutron source facility. Unprecedented neutron beam intensities are ensured by spallation reactions of a 5 MW, 2.0 GeV proton beam impinging on a tungsten target equipped with advanced moderators. The work presented here aims at investigating possibilities for installing an ultra cold neutron (UCN) source at the ESS. One consequence of using the recently proposed flat moderators is that they take up less space than the moderators originally foreseen and thus leave more freedom to design a UCN source, close to the spallation hotspot. One of the options studied is to place a large He-4 UCN source in a through-going tube which penetrates the shielding below the target. First calculations of neutron flux available for UCN... (More)
ESS will be a premier neutron source facility. Unprecedented neutron beam intensities are ensured by spallation reactions of a 5 MW, 2.0 GeV proton beam impinging on a tungsten target equipped with advanced moderators. The work presented here aims at investigating possibilities for installing an ultra cold neutron (UCN) source at the ESS. One consequence of using the recently proposed flat moderators is that they take up less space than the moderators originally foreseen and thus leave more freedom to design a UCN source, close to the spallation hotspot. One of the options studied is to place a large He-4 UCN source in a through-going tube which penetrates the shielding below the target. First calculations of neutron flux available for UCN production are given, along with heat-load estimates. It is estimated that the flux can give rise to a UCN production at a rate of up to 1.5 . 10(8) UCN/s. A production in this range potentially allows for a number of UCN experiments to be carried out at unprecedented precision, including, for example, quantum gravitational spectroscopy with UCNs which rely on high phase-space density. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Advances in High Energy Physics
publisher
Hindawi Publishing Corporation
external identifiers
  • wos:000340107800001
  • scopus:84934956094
ISSN
1687-7357
DOI
10.1155/2014/241639
language
English
LU publication?
yes
id
7a7dff50-b40d-4bdd-ab25-e185e88f6f8c (old id 4665559)
date added to LUP
2014-09-25 14:19:03
date last changed
2017-01-01 03:44:58
@article{7a7dff50-b40d-4bdd-ab25-e185e88f6f8c,
  abstract     = {ESS will be a premier neutron source facility. Unprecedented neutron beam intensities are ensured by spallation reactions of a 5 MW, 2.0 GeV proton beam impinging on a tungsten target equipped with advanced moderators. The work presented here aims at investigating possibilities for installing an ultra cold neutron (UCN) source at the ESS. One consequence of using the recently proposed flat moderators is that they take up less space than the moderators originally foreseen and thus leave more freedom to design a UCN source, close to the spallation hotspot. One of the options studied is to place a large He-4 UCN source in a through-going tube which penetrates the shielding below the target. First calculations of neutron flux available for UCN production are given, along with heat-load estimates. It is estimated that the flux can give rise to a UCN production at a rate of up to 1.5 . 10(8) UCN/s. A production in this range potentially allows for a number of UCN experiments to be carried out at unprecedented precision, including, for example, quantum gravitational spectroscopy with UCNs which rely on high phase-space density.},
  articleno    = {241639},
  author       = {Klinkby, Esben and Batkov, Konstantin and Mezei, Ferenc and Pitcher, Eric and Schonfeldt, Troels and Takibayev, Alan and Zanini, Luca},
  issn         = {1687-7357},
  language     = {eng},
  publisher    = {Hindawi Publishing Corporation},
  series       = {Advances in High Energy Physics},
  title        = {In-Pile He-4 Source for UCN Production at the ESS},
  url          = {http://dx.doi.org/10.1155/2014/241639},
  year         = {2014},
}