222 Rn emanation measurements for the XENON1T experiment
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/103914 https://doi.org/10.1140/epjc/s10052-020-08777-z |
Resumo: | The selection of low-radioactive construction materials is of utmost importance for the success of lowenergy rare event search experiments. Besides radioactive contaminants in the bulk, the emanation of radioactive radon atoms from material surfaces attains increasing relevance in the effort to further reduce the background of such experiments. In this work, we present the 222Rn emanation measurements performed for the XENON1T dark matter experiment. Together with the bulk impurity screening campaign, the results enabled us to select the radio-purest construction materials, targeting a 222Rn activity concentration of 10 μBq/kg in 3.2 t of xenon. The knowledge of the distribution of the 222Rn sources allowed us to selectively eliminate problematic components in the course of the experiment. The predictions from the emanation measurements were compared to data of the 222Rn activity concentration in XENON1T. The final 222Rn activity concentration of (4.5±0.1) μBq/kg in the target of XENON1T is the lowest ever achieved in a xenon dark matter experiment. |
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222 Rn emanation measurements for the XENON1T experimentThe selection of low-radioactive construction materials is of utmost importance for the success of lowenergy rare event search experiments. Besides radioactive contaminants in the bulk, the emanation of radioactive radon atoms from material surfaces attains increasing relevance in the effort to further reduce the background of such experiments. In this work, we present the 222Rn emanation measurements performed for the XENON1T dark matter experiment. Together with the bulk impurity screening campaign, the results enabled us to select the radio-purest construction materials, targeting a 222Rn activity concentration of 10 μBq/kg in 3.2 t of xenon. The knowledge of the distribution of the 222Rn sources allowed us to selectively eliminate problematic components in the course of the experiment. The predictions from the emanation measurements were compared to data of the 222Rn activity concentration in XENON1T. The final 222Rn activity concentration of (4.5±0.1) μBq/kg in the target of XENON1T is the lowest ever achieved in a xenon dark matter experiment.Springer Nature2021-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/103914http://hdl.handle.net/10316/103914https://doi.org/10.1140/epjc/s10052-020-08777-zengAmaro, F. D.Cardoso, J. M. R.Lombardi, FLopes, J. A. M.Santos, J. M. F. dosSilva, M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-10-13T08:37:53Zoai:estudogeral.uc.pt:10316/103914Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:20:40.196770Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
222 Rn emanation measurements for the XENON1T experiment |
title |
222 Rn emanation measurements for the XENON1T experiment |
spellingShingle |
222 Rn emanation measurements for the XENON1T experiment Amaro, F. D. |
title_short |
222 Rn emanation measurements for the XENON1T experiment |
title_full |
222 Rn emanation measurements for the XENON1T experiment |
title_fullStr |
222 Rn emanation measurements for the XENON1T experiment |
title_full_unstemmed |
222 Rn emanation measurements for the XENON1T experiment |
title_sort |
222 Rn emanation measurements for the XENON1T experiment |
author |
Amaro, F. D. |
author_facet |
Amaro, F. D. Cardoso, J. M. R. Lombardi, F Lopes, J. A. M. Santos, J. M. F. dos Silva, M. |
author_role |
author |
author2 |
Cardoso, J. M. R. Lombardi, F Lopes, J. A. M. Santos, J. M. F. dos Silva, M. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Amaro, F. D. Cardoso, J. M. R. Lombardi, F Lopes, J. A. M. Santos, J. M. F. dos Silva, M. |
description |
The selection of low-radioactive construction materials is of utmost importance for the success of lowenergy rare event search experiments. Besides radioactive contaminants in the bulk, the emanation of radioactive radon atoms from material surfaces attains increasing relevance in the effort to further reduce the background of such experiments. In this work, we present the 222Rn emanation measurements performed for the XENON1T dark matter experiment. Together with the bulk impurity screening campaign, the results enabled us to select the radio-purest construction materials, targeting a 222Rn activity concentration of 10 μBq/kg in 3.2 t of xenon. The knowledge of the distribution of the 222Rn sources allowed us to selectively eliminate problematic components in the course of the experiment. The predictions from the emanation measurements were compared to data of the 222Rn activity concentration in XENON1T. The final 222Rn activity concentration of (4.5±0.1) μBq/kg in the target of XENON1T is the lowest ever achieved in a xenon dark matter experiment. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-04 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/103914 http://hdl.handle.net/10316/103914 https://doi.org/10.1140/epjc/s10052-020-08777-z |
url |
http://hdl.handle.net/10316/103914 https://doi.org/10.1140/epjc/s10052-020-08777-z |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Springer Nature |
publisher.none.fl_str_mv |
Springer Nature |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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