A NaI activation method for the measurement of the weak thermal neutron field around the MEG experiment

A precise measurement of the thermal neutron flux (and an approximate measurement of the non-thermal neutron flux), associated with the high intensity stopping μ + beam ( ≈ 1.5 × 10 8 μ + s - 1 ) of the MEG experiment, was studied by measuring the delayed radioactivity of an activated NaI detector....

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2007-01, Vol.570 (3), p.561-564
Main Authors: Baldini, A., Bemporad, C., Cei, F., Grassi, M., Nicolò, D., Papa, A., Pazzi, R., Signorelli, G.
Format: Article
Language:English
Subjects:
Capture
NaI
Neutron
Radioactivity
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Summary:A precise measurement of the thermal neutron flux (and an approximate measurement of the non-thermal neutron flux), associated with the high intensity stopping μ + beam ( ≈ 1.5 × 10 8 μ + s - 1 ) of the MEG experiment, was studied by measuring the delayed radioactivity of an activated NaI detector. This passive method provides a high sensitivity and allows the neutron flux determination at all locations, even in regions of high magnetic field. We present and discuss the results.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2006.10.101