Direct Determination of a Bare Neutron Counter Yield Function
Ground based neutron counters are a standard tool for detecting atmospheric showers from GeV-range primary cosmic rays of either solar or galactic origin. Bare neutron counters, a type of lead-free neutron monitor, function much like standard neutron monitors but have different yield functions prima...
Published in: | Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) |
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Uppsala universitet, Högenergifysik
2022
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ftuppsalauniv:oai:DiVA.org:uu-518316 2024-01-14T09:59:40+01:00 Direct Determination of a Bare Neutron Counter Yield Function Nuntiyakul, W. Mangeard, P. -S Ruffolo, D. Evenson, P. Bieber, J. W. Clem, J. Hallgren, Allan Madsen, J. Pyle, R. Saiz, A. Tilav, S. 2022 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-518316 https://doi.org/10.22323/1.395.1242 eng eng Uppsala universitet, Högenergifysik Chiang Mai Univ, Dept Phys & Mat Sci, Fac Sci, Chiang Mai 50200, Thailand.;Natl Astron Res Inst Thailand NARIT, Chiang Mai 50180, Thailand. Mahidol Univ, Dept Phys, Fac Sci, Bangkok 10400, Thailand. Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA. Univ Wisconsin Madison, Wisconsin IceCube Particle Astrophys Ctr, Madison, WI 53703 USA. Pyle Consulting Grp Inc, St Charles, IL 60174 USA. Proceedings of Science 37th International Cosmic Ray Conference, ICRC2021 orcid:0000-0001-7751-4489 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-518316 doi:10.22323/1.395.1242 ISI:001081844904079 info:eu-repo/semantics/openAccess Astronomy Astrophysics and Cosmology Astronomi astrofysik och kosmologi Subatomic Physics Subatomär fysik Conference paper info:eu-repo/semantics/conferenceObject text 2022 ftuppsalauniv https://doi.org/10.22323/1.395.1242 2023-12-20T23:32:02Z Ground based neutron counters are a standard tool for detecting atmospheric showers from GeV-range primary cosmic rays of either solar or galactic origin. Bare neutron counters, a type of lead-free neutron monitor, function much like standard neutron monitors but have different yield functions primarily because they are more sensitive to neutrons of lower energy. When operated together with standard monitors the different yield functions allow estimates to be made of the energy spectrum of galactic or solar particles. In 2010 a new array of twelve bare neutron detectors was installed at the South Pole to operate together with the neutron monitor there. Prior to installation, two of the detectors were operated on a ship that traveled from Sweden to Antarctica and back from November 2009 to April 2010. The purpose of this latitude survey was to use Earth's magnetic field as a spectrometer, blocking cosmic rays below the local cutoff rigidity (momentum per unit charge), from which we determined the response function vs. rigidity of these bare counters. By comparing that measured response function to direct measurements of the cosmic ray spectrum taken by the PAMELA spacecraft, we were able to make a direct determination of the yield function for these detectors. Conference Object Antarc* Antarctica South pole South pole Uppsala University: Publications (DiVA) South Pole Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) 1242 |
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Uppsala University: Publications (DiVA) |
op_collection_id |
ftuppsalauniv |
language |
English |
topic |
Astronomy Astrophysics and Cosmology Astronomi astrofysik och kosmologi Subatomic Physics Subatomär fysik |
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Astronomy Astrophysics and Cosmology Astronomi astrofysik och kosmologi Subatomic Physics Subatomär fysik Nuntiyakul, W. Mangeard, P. -S Ruffolo, D. Evenson, P. Bieber, J. W. Clem, J. Hallgren, Allan Madsen, J. Pyle, R. Saiz, A. Tilav, S. Direct Determination of a Bare Neutron Counter Yield Function |
topic_facet |
Astronomy Astrophysics and Cosmology Astronomi astrofysik och kosmologi Subatomic Physics Subatomär fysik |
description |
Ground based neutron counters are a standard tool for detecting atmospheric showers from GeV-range primary cosmic rays of either solar or galactic origin. Bare neutron counters, a type of lead-free neutron monitor, function much like standard neutron monitors but have different yield functions primarily because they are more sensitive to neutrons of lower energy. When operated together with standard monitors the different yield functions allow estimates to be made of the energy spectrum of galactic or solar particles. In 2010 a new array of twelve bare neutron detectors was installed at the South Pole to operate together with the neutron monitor there. Prior to installation, two of the detectors were operated on a ship that traveled from Sweden to Antarctica and back from November 2009 to April 2010. The purpose of this latitude survey was to use Earth's magnetic field as a spectrometer, blocking cosmic rays below the local cutoff rigidity (momentum per unit charge), from which we determined the response function vs. rigidity of these bare counters. By comparing that measured response function to direct measurements of the cosmic ray spectrum taken by the PAMELA spacecraft, we were able to make a direct determination of the yield function for these detectors. |
format |
Conference Object |
author |
Nuntiyakul, W. Mangeard, P. -S Ruffolo, D. Evenson, P. Bieber, J. W. Clem, J. Hallgren, Allan Madsen, J. Pyle, R. Saiz, A. Tilav, S. |
author_facet |
Nuntiyakul, W. Mangeard, P. -S Ruffolo, D. Evenson, P. Bieber, J. W. Clem, J. Hallgren, Allan Madsen, J. Pyle, R. Saiz, A. Tilav, S. |
author_sort |
Nuntiyakul, W. |
title |
Direct Determination of a Bare Neutron Counter Yield Function |
title_short |
Direct Determination of a Bare Neutron Counter Yield Function |
title_full |
Direct Determination of a Bare Neutron Counter Yield Function |
title_fullStr |
Direct Determination of a Bare Neutron Counter Yield Function |
title_full_unstemmed |
Direct Determination of a Bare Neutron Counter Yield Function |
title_sort |
direct determination of a bare neutron counter yield function |
publisher |
Uppsala universitet, Högenergifysik |
publishDate |
2022 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-518316 https://doi.org/10.22323/1.395.1242 |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
Antarc* Antarctica South pole South pole |
genre_facet |
Antarc* Antarctica South pole South pole |
op_relation |
37th International Cosmic Ray Conference, ICRC2021 orcid:0000-0001-7751-4489 http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-518316 doi:10.22323/1.395.1242 ISI:001081844904079 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.22323/1.395.1242 |
container_title |
Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021) |
container_start_page |
1242 |
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1788060214010839040 |