@article{f9b4c4ee37974053978688f6f7f567b3,
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 Ge76, 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 Ge76 Q value. An alternative approach achieving similar resolution enhancement is also presented.",
author = "{Majorana Collaboration} and Arnquist, {I. J.} and Avignone, {F. T.} and Barabash, {A. S.} and Barton, {C. J.} and Bhimani, {K. H.} and E. Blalock and B. Bos and M. Busch and M. Buuck and Caldwell, {T. S.} and Chan, {Y. D.} and Christofferson, {C. D.} and Chu, {P. H.} and Clark, {M. L.} and C. Cuesta and Detwiler, {J. A.} and Yu Efremenko and H. Ejiri and Elliott, {S. R.} and Giovanetti, {G. K.} and Green, {M. P.} and J. Gruszko and Guinn, {I. S.} and Guiseppe, {V. E.} and Haufe, {C. R.} and R. Henning and {Hervas Aguilar}, D. and Hoppe, {E. W.} and A. Hostiuc and Kidd, {M. F.} and I. Kim and Kouzes, {R. T.} and {Lannen V}, {T. E.} and A. Li and L{\'o}pez-Casta{\~n}o, {J. M.} and Martin, {E. L.} and Martin, {R. D.} and R. Massarczyk and Meijer, {S. J.} and S. Mertens and Oli, {T. K.} and G. Othman and Paudel, {L. S.} and W. Pettus and Poon, {A. W.P.} and Radford, {D. C.} and Reine, {A. L.} and K. Rielage and Ruof, {N. W.} and Schaper, {D. C.}",
note = "Publisher Copyright: {\textcopyright} 2023 American Physical Society.",
year = "2023",
month = apr,
doi = "10.1103/PhysRevC.107.045503",
language = "English",
volume = "107",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "4",
}