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Title: Charge trapping correction and energy performance of the Majorana Demonstrator

Abstract

P-type point contact (PPC) high-purity germanium detectors are an important technology in astroparticle and nuclear physics due to their superb energy resolution, low noise, and pulse shape discrimination capabilities. Analysis of data from the Majorana Demonstrator, a neutrinoless double-β decay experiment deploying PPC detectors enriched in 76Ge, has led to several novel improvements in the analysis of PPC signals. In this work we discuss charge trapping in PPC detectors and its effect on energy resolution. Small dislocations or impurities in the crystal lattice result in trapping of charge carriers from an ionization event of interest, attenuating the signal, and degrading the measured energy. We present a modified digital pole-zero correction to the signal energy estimation that counters the effects of charge trapping and improves the energy resolution of the Majorana Demonstrator by approximately 30 % to around 2.4 keV full width at half-maximum at 2039 keV, the 76Ge Q value. An alternative approach achieving similar resolution enhancement is also presented.

Authors:
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  1. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Majorana Collaboration. et al.
Publication Date:
Research Org.:
University of North Carolina, Chapel Hill, NC (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF)
Contributing Org.:
Majorana Collaboration
OSTI Identifier:
1976078
Alternate Identifier(s):
OSTI ID: 2205217; OSTI ID: 2229052
Report Number(s):
PNNL-SA-191829
Journal ID: ISSN 2469-9985; TRN: US2400038
Grant/Contract Number:  
FG02-97ER41041; FG02-97ER41033; AC05-76RL01830; AC02-05CH11231; AC05-00OR22725; AC05-76RL0130; FG02-97ER41020; SC0012612; SC0014445; SC0018060; SC0022339; LANLEM77/LANLEM78; MRI-0923142; PHY-1003399; PHY-1102292; PHY-1206314; PHY-1614611; PHY-1812409; PHY-1812356; PHY-2111140; PHY-2209530
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C
Additional Journal Information:
Journal Volume: 107; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; neutrinoless double beta decay; nuclear structure & decays; radiation detectors; solid-state detectors

Citation Formats

Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., 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., Efremenko, Yu, Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V., T. E., Li, A., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X. Charge trapping correction and energy performance of the Majorana Demonstrator. United States: N. p., 2023. Web. doi:10.1103/physrevc.107.045503.
Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., 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., Efremenko, Yu, Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V., T. E., Li, A., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., & Zhu, B. X. Charge trapping correction and energy performance of the Majorana Demonstrator. United States. https://doi.org/10.1103/physrevc.107.045503
Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bhimani, K. H., 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., Efremenko, Yu, Ejiri, H., Elliott, S. R., Giovanetti, G. K., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Haufe, C. R., Henning, R., Hervas Aguilar, D., Hoppe, E. W., Hostiuc, A., Kidd, M. F., Kim, I., Kouzes, R. T., Lannen V., T. E., Li, A., López-Castaño, J. M., Martin, E. L., Martin, R. D., Massarczyk, R., Meijer, S. J., Mertens, S., Oli, T. K., Othman, G., Paudel, L. S., Pettus, W., Poon, A. P., Radford, D. C., Reine, A. L., Rielage, K., Ruof, N. W., Schaper, D. C., Tedeschi, D., Varner, R. L., Vasilyev, S., Wilkerson, J. F., Wiseman, C., Xu, W., Yu, C. -H., and Zhu, B. X. Mon . "Charge trapping correction and energy performance of the Majorana Demonstrator". United States. https://doi.org/10.1103/physrevc.107.045503. https://www.osti.gov/servlets/purl/1976078.
@article{osti_1976078,
title = {Charge trapping correction and energy performance of the Majorana Demonstrator},
author = {Arnquist, I. J. and Avignone, F. T. and Barabash, A. S. and Barton, C. J. and Bhimani, K. H. and Blalock, E. and Bos, B. and Busch, M. and Buuck, M. and Caldwell, T. S. and Chan, Y. -D. and Christofferson, C. D. and Chu, P. -H. and Clark, M. L. and Cuesta, C. and Detwiler, J. A. and Efremenko, Yu and Ejiri, H. and Elliott, S. R. and Giovanetti, G. K. and Green, M. P. and Gruszko, J. and Guinn, I. S. and Guiseppe, V. E. and Haufe, C. R. and Henning, R. and Hervas Aguilar, D. and Hoppe, E. W. and Hostiuc, A. and Kidd, M. F. and Kim, I. and Kouzes, R. T. and Lannen V., T. E. and Li, A. and López-Castaño, J. M. and Martin, E. L. and Martin, R. D. and Massarczyk, R. and Meijer, S. J. and Mertens, S. and Oli, T. K. and Othman, G. and Paudel, L. S. and Pettus, W. and Poon, A. P. and Radford, D. C. and Reine, A. L. and Rielage, K. and Ruof, N. W. and Schaper, D. C. and Tedeschi, D. and Varner, R. L. and Vasilyev, S. and Wilkerson, J. F. and Wiseman, C. and Xu, W. and Yu, C. -H. and Zhu, B. X.},
abstractNote = {P-type point contact (PPC) high-purity germanium detectors are an important technology in astroparticle and nuclear physics due to their superb energy resolution, low noise, and pulse shape discrimination capabilities. Analysis of data from the Majorana Demonstrator, a neutrinoless double-β decay experiment deploying PPC detectors enriched in 76Ge, has led to several novel improvements in the analysis of PPC signals. In this work we discuss charge trapping in PPC detectors and its effect on energy resolution. Small dislocations or impurities in the crystal lattice result in trapping of charge carriers from an ionization event of interest, attenuating the signal, and degrading the measured energy. We present a modified digital pole-zero correction to the signal energy estimation that counters the effects of charge trapping and improves the energy resolution of the Majorana Demonstrator by approximately 30 % to around 2.4 keV full width at half-maximum at 2039 keV, the 76Ge Q value. An alternative approach achieving similar resolution enhancement is also presented.},
doi = {10.1103/physrevc.107.045503},
journal = {Physical Review. C},
number = 4,
volume = 107,
place = {United States},
year = {Mon Apr 24 00:00:00 EDT 2023},
month = {Mon Apr 24 00:00:00 EDT 2023}
}

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