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Status of the ESS Cryogenic System

Weisend, John LU ; Darve, Christine LU ; Gallimore, Stephen LU ; Hees, Wolfgang LU ; Jurns, John LU ; Köttig, Torsten LU ; Ladd, Peter LU ; Molloy, Stephen LU ; Parker, Thomas LU and Wang, Xilong LU (2014) Joint Conference of the Transactions of the Cryogenic Engineering Conference (CEC) / Transactions of the International Cryogenic Materials Conference In Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (AIP Conference Proceedings) 1573. p.633-638
Abstract
The European Spallation Source (ESS) is a neutron science facility funded by a collaboration of 17 European countries currently under design and construction in Lund, Sweden. The centerpiece of ESS is a 2.5 GeV proton linac utilizing superconducting RF cavities operating at 2 K. In addition to cooling the SRF cavities, cryogenics is also used at ESS in the liquid hydrogen moderators surrounding the target. ESS also uses both liquid helium and liquid nitrogen in a number of the planned neutron instruments. There is also a significant cryogenic installation associated with the site acceptance testing of the ESS cryomodules. The ESS cryogenic system consists of 3 separate helium refrigeration/liquefaction plants supplying the accelerator,... (More)
The European Spallation Source (ESS) is a neutron science facility funded by a collaboration of 17 European countries currently under design and construction in Lund, Sweden. The centerpiece of ESS is a 2.5 GeV proton linac utilizing superconducting RF cavities operating at 2 K. In addition to cooling the SRF cavities, cryogenics is also used at ESS in the liquid hydrogen moderators surrounding the target. ESS also uses both liquid helium and liquid nitrogen in a number of the planned neutron instruments. There is also a significant cryogenic installation associated with the site acceptance testing of the ESS cryomodules. The ESS cryogenic system consists of 3 separate helium refrigeration/liquefaction plants supplying the accelerator, target moderators and instruments. An extensive cryogenic distribution system connects the accelerator cryoplant with the cryomodules. This paper describes the preliminary design of the ESS cryogenic system including the expected heat loads. Challenges associated with the required high reliability and turn-down capability will also be discussed. A unique feature of ESS is its commitment to sustainability and energy recovery. A conceptual design for recovering waste heat from the helium compressors for use in the Lund district heating system will also be described. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
ESS, Helium, Refrigeration, Hydrogen Moderator, Distribution System, Sustainability
in
Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (AIP Conference Proceedings)
volume
1573
pages
633 - 638
publisher
American Institute of Physics
conference name
Joint Conference of the Transactions of the Cryogenic Engineering Conference (CEC) / Transactions of the International Cryogenic Materials Conference
external identifiers
  • wos:000343409400086
ISSN
0094-243X
1551-7616
DOI
10.1063/1.4860761
language
English
LU publication?
yes
id
16c3b3f7-f909-49b3-862f-0971ce84fac9 (old id 4783861)
date added to LUP
2014-11-21 10:52:14
date last changed
2016-04-15 17:08:43
@inproceedings{16c3b3f7-f909-49b3-862f-0971ce84fac9,
  abstract     = {The European Spallation Source (ESS) is a neutron science facility funded by a collaboration of 17 European countries currently under design and construction in Lund, Sweden. The centerpiece of ESS is a 2.5 GeV proton linac utilizing superconducting RF cavities operating at 2 K. In addition to cooling the SRF cavities, cryogenics is also used at ESS in the liquid hydrogen moderators surrounding the target. ESS also uses both liquid helium and liquid nitrogen in a number of the planned neutron instruments. There is also a significant cryogenic installation associated with the site acceptance testing of the ESS cryomodules. The ESS cryogenic system consists of 3 separate helium refrigeration/liquefaction plants supplying the accelerator, target moderators and instruments. An extensive cryogenic distribution system connects the accelerator cryoplant with the cryomodules. This paper describes the preliminary design of the ESS cryogenic system including the expected heat loads. Challenges associated with the required high reliability and turn-down capability will also be discussed. A unique feature of ESS is its commitment to sustainability and energy recovery. A conceptual design for recovering waste heat from the helium compressors for use in the Lund district heating system will also be described.},
  author       = {Weisend, John and Darve, Christine and Gallimore, Stephen and Hees, Wolfgang and Jurns, John and Köttig, Torsten and Ladd, Peter and Molloy, Stephen and Parker, Thomas and Wang, Xilong},
  booktitle    = {Advances in Cryogenic Engineering: Transactions of the Cryogenic Engineering Conference - CEC (AIP Conference Proceedings)},
  issn         = {0094-243X},
  keyword      = {ESS,Helium,Refrigeration,Hydrogen Moderator,Distribution System,Sustainability},
  language     = {eng},
  pages        = {633--638},
  publisher    = {American Institute of Physics},
  title        = {Status of the ESS Cryogenic System},
  url          = {http://dx.doi.org/10.1063/1.4860761},
  volume       = {1573},
  year         = {2014},
}