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Vanadium-based neut...
Vanadium-based neutron beam monitor
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- Maulerova, V. (author)
- Lund University,European Spallation Source ERIC, Denmark
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- Kanaki, K. (author)
- European Spallation Source ERIC, Denmark
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- Kadletz, P. M. (author)
- European Spallation Source ERIC, Denmark
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- Woracek, R. (author)
- European Spallation Source ERIC, Denmark
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- Wilpert, T. (author)
- Helmholtz Association of German Research Centers
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- Fissum, K. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Laloni, A. (author)
- European Spallation Source ERIC, Denmark
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- Mauritzson, N. (author)
- Lund University,Lunds universitet,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH
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- Issa, F. (author)
- European Spallation Source ERIC, Denmark
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- Hall-Wilton, R. (author)
- European Spallation Source ERIC, Denmark,University of Milano-Bicocca
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(creator_code:org_t)
- 2020
- 2020
- English.
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In: Physical Review Accelerators and Beams. - 2469-9888. ; 23:7
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Abstract
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- A prototype quasiparasitic thermal neutron beam monitor based on isotropic neutron scattering from a thin natural vanadium foil and standard He3 proportional counters is conceptualized, designed, simulated, calibrated, and commissioned. The European Spallation Source designed to deliver the highest integrated neutron flux originating from a pulsed source is currently under construction in Lund, Sweden. The effort to investigate a vanadium-based neutron beam monitor was triggered by a list of requirements for beam monitors permanently placed in the ESS neutron beams in order to provide reliable monitoring at complex beam lines: low attenuation, linear response over a wide range of neutron fluxes, near to constant efficiency for neutron wavelengths in a range of 0.6-10 Å, calibration stability and the possibility to place the system in vacuum are all desirable characteristics. The scattering-based prototype, employing a natural vanadium foil and standard He3 proportional counters, was investigated at the V17 and V20 neutron beam lines of the Helmholtz-Zentrum in Berlin, Germany, in several different geometrical configurations of the He3 proportional counters around the foil. Response linearity is successfully demonstrated for foil thicknesses ranging from 0.04 mm to 3.15 mm. Attenuation lower than 1% for thermal neutrons is demonstrated for the 0.04 mm and 0.125 mm foils. The geometries used for the experiment were simulated allowing for absolute flux calibration and establishing the possible range of efficiencies for various designs of the prototype. The operational flux limits for the beam monitor prototype were established as a dependency of the background radiation and prototype geometry. The herein demonstrated prototype monitors can be employed for neutron intensities ranging from 103-1010 n/s.
Subject headings
- NATURVETENSKAP -- Fysik -- Acceleratorfysik och instrumentering (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Accelerator Physics and Instrumentation (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Maulerova, V.
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Kanaki, K.
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Kadletz, P. M.
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Woracek, R.
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Wilpert, T.
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Fissum, K.
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show more...
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Laloni, A.
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Mauritzson, N.
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Issa, F.
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Hall-Wilton, R.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Accelerator Phys ...
- Articles in the publication
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Physical Review ...
- By the university
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Lund University