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Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR

Fuente: arXiv

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Auteurs principaux:	Arnquist, I. J., Avignone III, 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., Aguilar, D. Hervas, 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. W. 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.
Format:	Preprint
Publié:	2022
Sujets:	Instrumentation and Detectors
Accès en ligne:	Acceder al recurso
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_version_	1866929445345951744
author	Arnquist, I. J. Avignone III, 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. Aguilar, D. Hervas 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. W. 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.
author_facet	Arnquist, I. J. Avignone III, 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. Aguilar, D. Hervas 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. W. 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.
contents	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-beta decay experiment deploying PPC detectors enriched in $^{76}$Ge, 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 FWHM at 2039 keV, the $^{76}$Ge $Q$-value. An alternative approach achieving similar resolution enhancement is also presented.
format	Preprint
id	arxiv_https___arxiv_org_abs_2208_03424
institution	arXiv
publishDate	2022
record_format	arxiv
spellingShingle	Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR Arnquist, I. J. Avignone III, 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. Aguilar, D. Hervas 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. W. 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. Instrumentation and Detectors 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-beta decay experiment deploying PPC detectors enriched in $^{76}$Ge, 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 FWHM at 2039 keV, the $^{76}$Ge $Q$-value. An alternative approach achieving similar resolution enhancement is also presented.
title	Charge Trapping and Energy Performance of the MAJORANA DEMONSTRATOR
topic	Instrumentation and Detectors
url	https://arxiv.org/abs/2208.03424