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[Formula: see text] -event characterization and rejection in point-contact HPGe detectors

P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection capabilities. We have characterized a PPC detector’s response to [Formula: see text] particles incident on the sensitive...

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Autores principales: Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bertrand, F. E., Blalock, E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y.-D., Christofferson, C. D., Chu, P.-H., Clark, M. L., Cuesta, C., Detwiler, J. A., Drobizhev, A., Edwards, T. R., Edwins, D. W., Edzards, F., Efremenko, Y., Elliott, S. R., Gilliss, T., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Hegedus, R. J., Henning, R., Aguilar, D. Hervas, Hoppe, E. W., Hostiuc, A., Kim, I., Kouzes, R. T., Lopez, A. M., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Myslik, J., Oli, T. K., Othman, G., Pettus, W., Poon, A. W. P., Radford, D. C., Rager, J., Reine, A. L., Rielage, K., Ruof, N. W., Saykı, B., Schönert, S., Stortini, M. J., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Willers, M., Wiseman, C., Xu, W., Yu, C.-H., Zhu, B. X.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8921096/
https://www.ncbi.nlm.nih.gov/pubmed/35310515
http://dx.doi.org/10.1140/epjc/s10052-022-10161-y
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author Arnquist, I. J.
Avignone, F. T.
Barabash, A. S.
Barton, C. J.
Bertrand, F. E.
Blalock, E.
Bos, B.
Busch, M.
Buuck, M.
Caldwell, T. S.
Chan, Y.-D.
Christofferson, C. D.
Chu, P.-H.
Clark, M. L.
Cuesta, C.
Detwiler, J. A.
Drobizhev, A.
Edwards, T. R.
Edwins, D. W.
Edzards, F.
Efremenko, Y.
Elliott, S. R.
Gilliss, T.
Giovanetti, G. K.
Green, M. P.
Gruszko, J.
Guinn, I. S.
Guiseppe, V. E.
Haufe, C. R.
Hegedus, R. J.
Henning, R.
Aguilar, D. Hervas
Hoppe, E. W.
Hostiuc, A.
Kim, I.
Kouzes, R. T.
Lopez, A. M.
López-Castaño, J. M.
Martin, E. L.
Martin, R. D.
Massarczyk, R.
Meijer, S. J.
Mertens, S.
Myslik, J.
Oli, T. K.
Othman, G.
Pettus, W.
Poon, A. W. P.
Radford, D. C.
Rager, J.
Reine, A. L.
Rielage, K.
Ruof, N. W.
Saykı, B.
Schönert, S.
Stortini, M. J.
Tedeschi, D.
Varner, R. L.
Vasilyev, S.
Wilkerson, J. F.
Willers, M.
Wiseman, C.
Xu, W.
Yu, C.-H.
Zhu, B. X.
author_facet Arnquist, I. J.
Avignone, F. T.
Barabash, A. S.
Barton, C. J.
Bertrand, F. E.
Blalock, E.
Bos, B.
Busch, M.
Buuck, M.
Caldwell, T. S.
Chan, Y.-D.
Christofferson, C. D.
Chu, P.-H.
Clark, M. L.
Cuesta, C.
Detwiler, J. A.
Drobizhev, A.
Edwards, T. R.
Edwins, D. W.
Edzards, F.
Efremenko, Y.
Elliott, S. R.
Gilliss, T.
Giovanetti, G. K.
Green, M. P.
Gruszko, J.
Guinn, I. S.
Guiseppe, V. E.
Haufe, C. R.
Hegedus, R. J.
Henning, R.
Aguilar, D. Hervas
Hoppe, E. W.
Hostiuc, A.
Kim, I.
Kouzes, R. T.
Lopez, A. M.
López-Castaño, J. M.
Martin, E. L.
Martin, R. D.
Massarczyk, R.
Meijer, S. J.
Mertens, S.
Myslik, J.
Oli, T. K.
Othman, G.
Pettus, W.
Poon, A. W. P.
Radford, D. C.
Rager, J.
Reine, A. L.
Rielage, K.
Ruof, N. W.
Saykı, B.
Schönert, S.
Stortini, M. J.
Tedeschi, D.
Varner, R. L.
Vasilyev, S.
Wilkerson, J. F.
Willers, M.
Wiseman, C.
Xu, W.
Yu, C.-H.
Zhu, B. X.
author_sort Arnquist, I. J.
collection PubMed
description P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection capabilities. We have characterized a PPC detector’s response to [Formula: see text] particles incident on the sensitive passivated and p[Formula: see text] surfaces, a previously poorly-understood source of background. The detector studied is identical to those in the Majorana Demonstrator experiment, a search for neutrinoless double-beta decay ([Formula: see text] ) in [Formula: see text] Ge. [Formula: see text] decays on most of the passivated surface exhibit significant energy loss due to charge trapping, with waveforms exhibiting a delayed charge recovery (DCR) signature caused by the slow collection of a fraction of the trapped charge. The DCR is found to be complementary to existing methods of [Formula: see text] identification, reliably identifying [Formula: see text] background events on the passivated surface of the detector. We demonstrate effective rejection of all surface [Formula: see text] events (to within statistical uncertainty) with a loss of only 0.2% of bulk events by combining the DCR discriminator with previously-used methods. The DCR discriminator has been used to reduce the background rate in the [Formula: see text] region of interest window by an order of magnitude in the Majorana Demonstrator  and will be used in the upcoming LEGEND-200 experiment.
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spelling pubmed-89210962022-03-17 [Formula: see text] -event characterization and rejection in point-contact HPGe detectors Arnquist, I. J. Avignone, F. T. Barabash, A. S. Barton, C. J. Bertrand, F. E. Blalock, E. Bos, B. Busch, M. Buuck, M. Caldwell, T. S. Chan, Y.-D. Christofferson, C. D. Chu, P.-H. Clark, M. L. Cuesta, C. Detwiler, J. A. Drobizhev, A. Edwards, T. R. Edwins, D. W. Edzards, F. Efremenko, Y. Elliott, S. R. Gilliss, T. Giovanetti, G. K. Green, M. P. Gruszko, J. Guinn, I. S. Guiseppe, V. E. Haufe, C. R. Hegedus, R. J. Henning, R. Aguilar, D. Hervas Hoppe, E. W. Hostiuc, A. Kim, I. Kouzes, R. T. Lopez, A. M. López-Castaño, J. M. Martin, E. L. Martin, R. D. Massarczyk, R. Meijer, S. J. Mertens, S. Myslik, J. Oli, T. K. Othman, G. Pettus, W. Poon, A. W. P. Radford, D. C. Rager, J. Reine, A. L. Rielage, K. Ruof, N. W. Saykı, B. Schönert, S. Stortini, M. J. Tedeschi, D. Varner, R. L. Vasilyev, S. Wilkerson, J. F. Willers, M. Wiseman, C. Xu, W. Yu, C.-H. Zhu, B. X. Eur Phys J C Part Fields Special Article - Tools for Experiment and Theory P-type point contact (PPC) HPGe detectors are a leading technology for rare event searches due to their excellent energy resolution, low thresholds, and multi-site event rejection capabilities. We have characterized a PPC detector’s response to [Formula: see text] particles incident on the sensitive passivated and p[Formula: see text] surfaces, a previously poorly-understood source of background. The detector studied is identical to those in the Majorana Demonstrator experiment, a search for neutrinoless double-beta decay ([Formula: see text] ) in [Formula: see text] Ge. [Formula: see text] decays on most of the passivated surface exhibit significant energy loss due to charge trapping, with waveforms exhibiting a delayed charge recovery (DCR) signature caused by the slow collection of a fraction of the trapped charge. The DCR is found to be complementary to existing methods of [Formula: see text] identification, reliably identifying [Formula: see text] background events on the passivated surface of the detector. We demonstrate effective rejection of all surface [Formula: see text] events (to within statistical uncertainty) with a loss of only 0.2% of bulk events by combining the DCR discriminator with previously-used methods. The DCR discriminator has been used to reduce the background rate in the [Formula: see text] region of interest window by an order of magnitude in the Majorana Demonstrator  and will be used in the upcoming LEGEND-200 experiment. Springer Berlin Heidelberg 2022-03-15 2022 /pmc/articles/PMC8921096/ /pubmed/35310515 http://dx.doi.org/10.1140/epjc/s10052-022-10161-y Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . Funded by SCOAP3
spellingShingle Special Article - Tools for Experiment and Theory
Arnquist, I. J.
Avignone, F. T.
Barabash, A. S.
Barton, C. J.
Bertrand, F. E.
Blalock, E.
Bos, B.
Busch, M.
Buuck, M.
Caldwell, T. S.
Chan, Y.-D.
Christofferson, C. D.
Chu, P.-H.
Clark, M. L.
Cuesta, C.
Detwiler, J. A.
Drobizhev, A.
Edwards, T. R.
Edwins, D. W.
Edzards, F.
Efremenko, Y.
Elliott, S. R.
Gilliss, T.
Giovanetti, G. K.
Green, M. P.
Gruszko, J.
Guinn, I. S.
Guiseppe, V. E.
Haufe, C. R.
Hegedus, R. J.
Henning, R.
Aguilar, D. Hervas
Hoppe, E. W.
Hostiuc, A.
Kim, I.
Kouzes, R. T.
Lopez, A. M.
López-Castaño, J. M.
Martin, E. L.
Martin, R. D.
Massarczyk, R.
Meijer, S. J.
Mertens, S.
Myslik, J.
Oli, T. K.
Othman, G.
Pettus, W.
Poon, A. W. P.
Radford, D. C.
Rager, J.
Reine, A. L.
Rielage, K.
Ruof, N. W.
Saykı, B.
Schönert, S.
Stortini, M. J.
Tedeschi, D.
Varner, R. L.
Vasilyev, S.
Wilkerson, J. F.
Willers, M.
Wiseman, C.
Xu, W.
Yu, C.-H.
Zhu, B. X.
[Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title [Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title_full [Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title_fullStr [Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title_full_unstemmed [Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title_short [Formula: see text] -event characterization and rejection in point-contact HPGe detectors
title_sort [formula: see text] -event characterization and rejection in point-contact hpge detectors
topic Special Article - Tools for Experiment and Theory
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8921096/
https://www.ncbi.nlm.nih.gov/pubmed/35310515
http://dx.doi.org/10.1140/epjc/s10052-022-10161-y
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