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High energy particle background at neutron spallation sources and possible solutions

Cherkashyna, Nataliia LU ; Kanaki, Kalliopi LU ; Kittelmann, T.; Filges, U.; Deen, Pascale LU ; Herwig, K.; Ehlers, G.; Greene, G.; Carpenter, J. and Connatser, Robert LU , et al. (2014) International Workshop on Neutron Optics and Detectors (NOP&D) In International Workshop on Neutron Optics and Detectors (NOP&D 2013) 2–5 July 2013, Munich, Germany 528. p.012013-012013
Abstract
Modern spallation neutron sources are driven by proton beams similar to GeV energies. Whereas low energy particle background shielding is well understood for reactors sources of neutrons (similar to 20 MeV), for high energies (100s MeV to multiple GeV) there is potential to improve shielding solutions and reduce instrument backgrounds significantly. We present initial measured data on high energy particle backgrounds, which illustrate the results of particle showers caused by high energy particles from spallation neutron sources. We use detailed physics models of different materials to identify new shielding solutions for such neutron sources, including laminated layers of multiple materials. In addition to the steel and concrete, which... (More)
Modern spallation neutron sources are driven by proton beams similar to GeV energies. Whereas low energy particle background shielding is well understood for reactors sources of neutrons (similar to 20 MeV), for high energies (100s MeV to multiple GeV) there is potential to improve shielding solutions and reduce instrument backgrounds significantly. We present initial measured data on high energy particle backgrounds, which illustrate the results of particle showers caused by high energy particles from spallation neutron sources. We use detailed physics models of different materials to identify new shielding solutions for such neutron sources, including laminated layers of multiple materials. In addition to the steel and concrete, which are used traditionally, we introduce some other options that are new to the neutron scattering community, among which there are copper alloys as used in hadronic calorimeters in high energy physics laboratories. These concepts have very attractive energy absorption characteristics, and simulations predict that the background suppression could be improved by one or two orders of magnitude. These solutions are expected to be great benefit to the European Spallation Source, where the majority of instruments are potentially affected by high energy backgrounds, as well as to existing spallation sources. (Less)
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Chapter in Book/Report/Conference proceeding
publication status
published
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in
International Workshop on Neutron Optics and Detectors (NOP&D 2013) 2–5 July 2013, Munich, Germany
volume
528
pages
012013 - 012013
publisher
IOP Publishing
conference name
International Workshop on Neutron Optics and Detectors (NOP&D)
external identifiers
  • wos:000340245000013
  • scopus:84906248015
ISSN
1742-6588
1742-6596
DOI
10.1088/1742-6596/528/1/012013
language
English
LU publication?
yes
id
3f45d46a-6f21-41a6-a786-60bbb20cb29e (old id 4665607)
date added to LUP
2014-09-25 15:14:42
date last changed
2017-02-26 03:14:39
@inproceedings{3f45d46a-6f21-41a6-a786-60bbb20cb29e,
  abstract     = {Modern spallation neutron sources are driven by proton beams similar to GeV energies. Whereas low energy particle background shielding is well understood for reactors sources of neutrons (similar to 20 MeV), for high energies (100s MeV to multiple GeV) there is potential to improve shielding solutions and reduce instrument backgrounds significantly. We present initial measured data on high energy particle backgrounds, which illustrate the results of particle showers caused by high energy particles from spallation neutron sources. We use detailed physics models of different materials to identify new shielding solutions for such neutron sources, including laminated layers of multiple materials. In addition to the steel and concrete, which are used traditionally, we introduce some other options that are new to the neutron scattering community, among which there are copper alloys as used in hadronic calorimeters in high energy physics laboratories. These concepts have very attractive energy absorption characteristics, and simulations predict that the background suppression could be improved by one or two orders of magnitude. These solutions are expected to be great benefit to the European Spallation Source, where the majority of instruments are potentially affected by high energy backgrounds, as well as to existing spallation sources.},
  author       = {Cherkashyna, Nataliia and Kanaki, Kalliopi and Kittelmann, T. and Filges, U. and Deen, Pascale and Herwig, K. and Ehlers, G. and Greene, G. and Carpenter, J. and Connatser, Robert and Hall-Wilton, Richard and Bentley, Phillip},
  booktitle    = {International Workshop on Neutron Optics and Detectors (NOP&D 2013) 2–5 July 2013, Munich, Germany},
  issn         = {1742-6588},
  language     = {eng},
  pages        = {012013--012013},
  publisher    = {IOP Publishing},
  title        = {High energy particle background at neutron spallation sources and possible solutions},
  url          = {http://dx.doi.org/10.1088/1742-6596/528/1/012013},
  volume       = {528},
  year         = {2014},
}