Energy-dependent light quenching in CaWO4 crystals at mK temperatures
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/10316/109415 https://doi.org/10.1140/epjc/s10052-014-2957-5 |
Resumo: | ScintillatingCaWO4 single crystals are a promising multi-element target for rare-event searches and are currently used in the direct dark matter experiment CRESST (Cryogenic Rare Event Search with Superconducting Thermometers). The relative light output of different particle interactions in CaWO4 is quantified by quenching factors (QFs). These are essential for an active background discrimination and the identification of a possible signal induced by weakly interacting massive particles (WIMPs). We present the first precise measurements of the QFs of O, Ca and W at mK temperatures by irradiating a cryogenic detector with a fast neutron beam. A clear energy dependence of the QF of O and, less pronounced, of Ca was observed for the first time. Furthermore, in CRESST neutron-calibration data a variation of the QFs among different CaWO4 single crystals was found. For typical CRESST detectors the QFs in the region-of-interest (10–40 keV) are QF ROI O = (11.2±0.5) %, QFROI Ca = (5.94±0.49)%and QFROI W= (1.72±0.21) %. The latest CRESST data (run32) is reanalyzed using these fundamentally new results on light quenching in CaWO4 having moderate influence on the WIMP analysis. Their relevance for future CRESST runs and for the clarification of previa e-mail: strauss@mpp.mpg.de b e-mail: walter.carli@physik.uni-muenchen.de c e-mail: Dominikus.Hellgartner@physik.tu-muenchen.de ously published results of direct dark matter experiments is emphasised. |
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Energy-dependent light quenching in CaWO4 crystals at mK temperaturesScintillatingCaWO4 single crystals are a promising multi-element target for rare-event searches and are currently used in the direct dark matter experiment CRESST (Cryogenic Rare Event Search with Superconducting Thermometers). The relative light output of different particle interactions in CaWO4 is quantified by quenching factors (QFs). These are essential for an active background discrimination and the identification of a possible signal induced by weakly interacting massive particles (WIMPs). We present the first precise measurements of the QFs of O, Ca and W at mK temperatures by irradiating a cryogenic detector with a fast neutron beam. A clear energy dependence of the QF of O and, less pronounced, of Ca was observed for the first time. Furthermore, in CRESST neutron-calibration data a variation of the QFs among different CaWO4 single crystals was found. For typical CRESST detectors the QFs in the region-of-interest (10–40 keV) are QF ROI O = (11.2±0.5) %, QFROI Ca = (5.94±0.49)%and QFROI W= (1.72±0.21) %. The latest CRESST data (run32) is reanalyzed using these fundamentally new results on light quenching in CaWO4 having moderate influence on the WIMP analysis. Their relevance for future CRESST runs and for the clarification of previa e-mail: strauss@mpp.mpg.de b e-mail: walter.carli@physik.uni-muenchen.de c e-mail: Dominikus.Hellgartner@physik.tu-muenchen.de ously published results of direct dark matter experiments is emphasised.This research was supported by the DFG cluster of excellence: Origin and Structure of the Universe, the DFG Transregio 27: Neutrinos and Beyond, the Helmholtz Alliance for Astroparticle Physics, the Maier-Leibnitz-Laboratorium (Garching) and by the BMBF: Project 05A11WOC EURECA-XENON.Springer Nature2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/109415http://hdl.handle.net/10316/109415https://doi.org/10.1140/epjc/s10052-014-2957-5eng1434-60441434-6052Strauß, R.Angloher, G.Bento, A.Bucci, C.Canonica, L.Carli, W.Erb, A.von Feilitzsch, F.Gorla, P.Gütlein, A.Hauff, D.Hellgartner, D.Jochum, J.Kraus, H.Lanfranchi, J.-C.Loebell, J.Münster, A.Petricca, F.Potzel, W.Pröbst, F.Reindl, F.Roth, S.Rottler, K.Sailer, C.Schäffner, K.Schieck, J.Scholl, S.Schönert, S.Seidel, W.von Sivers, M.Stodolsky, L.Strandhagen, C.Tanzke, A.Uffinger, M.Ulrich, A.Usherov, I.Wawoczny, S.Willers, M.Wüstrich, M.Zöller, A.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:RCAAP2023-10-13T09:22:31Zoai:estudogeral.uc.pt:10316/109415Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:25:37.027155Repositório 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 |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
title |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
spellingShingle |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures Strauß, R. |
title_short |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
title_full |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
title_fullStr |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
title_full_unstemmed |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
title_sort |
Energy-dependent light quenching in CaWO4 crystals at mK temperatures |
author |
Strauß, R. |
author_facet |
Strauß, R. Angloher, G. Bento, A. Bucci, C. Canonica, L. Carli, W. Erb, A. von Feilitzsch, F. Gorla, P. Gütlein, A. Hauff, D. Hellgartner, D. Jochum, J. Kraus, H. Lanfranchi, J.-C. Loebell, J. Münster, A. Petricca, F. Potzel, W. Pröbst, F. Reindl, F. Roth, S. Rottler, K. Sailer, C. Schäffner, K. Schieck, J. Scholl, S. Schönert, S. Seidel, W. von Sivers, M. Stodolsky, L. Strandhagen, C. Tanzke, A. Uffinger, M. Ulrich, A. Usherov, I. Wawoczny, S. Willers, M. Wüstrich, M. Zöller, A. |
author_role |
author |
author2 |
Angloher, G. Bento, A. Bucci, C. Canonica, L. Carli, W. Erb, A. von Feilitzsch, F. Gorla, P. Gütlein, A. Hauff, D. Hellgartner, D. Jochum, J. Kraus, H. Lanfranchi, J.-C. Loebell, J. Münster, A. Petricca, F. Potzel, W. Pröbst, F. Reindl, F. Roth, S. Rottler, K. Sailer, C. Schäffner, K. Schieck, J. Scholl, S. Schönert, S. Seidel, W. von Sivers, M. Stodolsky, L. Strandhagen, C. Tanzke, A. Uffinger, M. Ulrich, A. Usherov, I. Wawoczny, S. Willers, M. Wüstrich, M. Zöller, A. |
author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Strauß, R. Angloher, G. Bento, A. Bucci, C. Canonica, L. Carli, W. Erb, A. von Feilitzsch, F. Gorla, P. Gütlein, A. Hauff, D. Hellgartner, D. Jochum, J. Kraus, H. Lanfranchi, J.-C. Loebell, J. Münster, A. Petricca, F. Potzel, W. Pröbst, F. Reindl, F. Roth, S. Rottler, K. Sailer, C. Schäffner, K. Schieck, J. Scholl, S. Schönert, S. Seidel, W. von Sivers, M. Stodolsky, L. Strandhagen, C. Tanzke, A. Uffinger, M. Ulrich, A. Usherov, I. Wawoczny, S. Willers, M. Wüstrich, M. Zöller, A. |
description |
ScintillatingCaWO4 single crystals are a promising multi-element target for rare-event searches and are currently used in the direct dark matter experiment CRESST (Cryogenic Rare Event Search with Superconducting Thermometers). The relative light output of different particle interactions in CaWO4 is quantified by quenching factors (QFs). These are essential for an active background discrimination and the identification of a possible signal induced by weakly interacting massive particles (WIMPs). We present the first precise measurements of the QFs of O, Ca and W at mK temperatures by irradiating a cryogenic detector with a fast neutron beam. A clear energy dependence of the QF of O and, less pronounced, of Ca was observed for the first time. Furthermore, in CRESST neutron-calibration data a variation of the QFs among different CaWO4 single crystals was found. For typical CRESST detectors the QFs in the region-of-interest (10–40 keV) are QF ROI O = (11.2±0.5) %, QFROI Ca = (5.94±0.49)%and QFROI W= (1.72±0.21) %. The latest CRESST data (run32) is reanalyzed using these fundamentally new results on light quenching in CaWO4 having moderate influence on the WIMP analysis. Their relevance for future CRESST runs and for the clarification of previa e-mail: strauss@mpp.mpg.de b e-mail: walter.carli@physik.uni-muenchen.de c e-mail: Dominikus.Hellgartner@physik.tu-muenchen.de ously published results of direct dark matter experiments is emphasised. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
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/10316/109415 http://hdl.handle.net/10316/109415 https://doi.org/10.1140/epjc/s10052-014-2957-5 |
url |
http://hdl.handle.net/10316/109415 https://doi.org/10.1140/epjc/s10052-014-2957-5 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1434-6044 1434-6052 |
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 |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799134138229325824 |