Monk, Stephen and Joyce, Malcolm and Jarrah, Z. and King, D. and Oppenheim, Matthew (2008) A portable energy-sensitive cosmic neutron detection instrument. Review of Scientific Instruments, 79 (2).
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The construction and testing of a portable energy-sensitive neutron instrument are described. This instrument has been designed and constructed for the primary purpose of characterizing cosmic-ray neutron fields in the upper atmosphere and in cosmic reference field facilities. The instrument comprises a helium-3 proportional counter surrounded by 15 mm of lead and 140 mm of polyethylene creating a spherical structure with a diameter of 34 cm. The instrument also incorporates 12 boron-coated diodes, six on the outside of the polyethylene layer with six placed within the structure. The dimensions, materials, and arrangement of these in the instrument have previously been optimized with the CNPX Monte Carlo simulation software to provide a compromise between the requirements of portability and spectral response. Testing took place at several locations and experimental data from the instrument's operation at the high-altitude Jungfraujoch laboratory in the Swiss alps are presented.
|Journal or Publication Title:||Review of Scientific Instruments|
|Additional Information:||Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Rev. Sci. Instrum. 79, 023301 (2008); http://dx.doi.org/10.1063/1.2835717 (8 pages) A portable energy-sensitive cosmic neutron detection instrument S. D. Monk, M. J. Joyce, Z. Jarrah, D. King, and M. Oppenheim and may be found at http://rsi.aip.org/resource/1/rsinak/v79/i2/p023301_s1?isAuthorized=no|
|Subjects:||Q Science > QA Mathematics > QA75 Electronic computers. Computer science|
|Departments:||Faculty of Science and Technology > Engineering|
Faculty of Science and Technology > School of Computing & Communications
|Deposited On:||18 Jul 2008 13:37|
|Last Modified:||24 Jan 2014 05:14|
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