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A thermal-neutron detector with a phoswich system of LiCaAlF6 and BGO crystal scintillators onboard PoGOLite
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2010 (English)In: 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010, 2010, 32-37 p.Conference paper, Published paper (Refereed)
Abstract [en]

To measure the flux of atmospheric neutrons and study the neutron contribution to the background of the main detector of the PoGOLite (Polarized Gamma-ray Observer) balloon-borne experiment, a thermal-neutron detector with a phoswich system of LiCaAlF6 (Eu) and BGO crystal scintillators is developed. The performance to separate thermal-neutron events from those of gamma-rays and charged particles is validated with 252Cf on ground. The detector is attached to the PoGOLite instrument and is launched in 2011 from the Esrange facility in the North of Sweden. Although the emission wavelength of the LiCaAlF6 (Ce) is 300 nm and overlaps with the absorption wavelength of the BGO, the phoswich capability of the LiCaAlF6 (Ce) with the BGO is also confirmed with installing a waveform shifter.

Place, publisher, year, edition, pages
2010. 32-37 p.
Series
IEEE Nuclear Science Symposium Conference Record, ISSN 1095-7863
Keyword [en]
252Cf isotope;BGO crystal scintillators;Esrange facility;Phoswich System;PoGOLite instrument;atmospheric neutrons;balloon-borne experiment;polarized gamma-ray observer;thermal-neutron detector;waveform shifter;balloons;gamma-ray apparatus;neutron detection;solid scintillation detectors;
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-80118DOI: 10.1109/NSSMIC.2010.5873712Scopus ID: 2-s2.0-79960301296OAI: oai:DiVA.org:kth-80118DiVA: diva2:496010
Conference
2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010. Knoxville, TN. 30 October 2010 - 6 November 2010
Note

QC 20120210

Available from: 2012-02-09 Created: 2012-02-09 Last updated: 2017-03-24Bibliographically approved

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Axelsson, MagnusKiss, Mózsi BankPearce, MarkRyde, Felix

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