Characterization of high purity germanium point contact detectors with low net impurity concentration

S. Mertens; A. Hegai; D. C. Radford; N. Abgrall; Y. D. Chan; R. D. Martin; A. W.P. Poon; C. Schmitt

doi:10.1016/j.nima.2018.09.012

Characterization of high purity germanium point contact detectors with low net impurity concentration

S. Mertens, A. Hegai, D. C. Radford, N. Abgrall, Y. D. Chan, R. D. Martin, A. W.P. Poon, C. Schmitt

Associate Professorship of Dark Matter

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8 Scopus citations

Abstract

High Purity germanium point-contact detectors have low energy thresholds and excellent energy resolution over a wide energy range, and are thus widely used in nuclear and particle physics. In rare event searches, such as neutrinoless double beta decay, the point-contact geometry is of particular importance since it allows for pulse-shape discrimination, and therefore for a significant background reduction. In this paper we investigate the pulse-shape discrimination performance of ultra-high purity germanium point contact detectors. It is demonstrated that a minimal net impurity concentration is required to meet the pulse-shape performance requirements.

Original language	English
Pages (from-to)	81-88
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	921
DOIs	https://doi.org/10.1016/j.nima.2018.09.012
State	Published - 21 Mar 2019

Keywords

Germanium detector
Neutrinoless double beta decay
Rare event search

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10.1016/j.nima.2018.09.012

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Mertens, S., Hegai, A., Radford, D. C., Abgrall, N., Chan, Y. D., Martin, R. D., Poon, A. W. P., & Schmitt, C. (2019). Characterization of high purity germanium point contact detectors with low net impurity concentration. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 921, 81-88. https://doi.org/10.1016/j.nima.2018.09.012

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title = "Characterization of high purity germanium point contact detectors with low net impurity concentration",

abstract = "High Purity germanium point-contact detectors have low energy thresholds and excellent energy resolution over a wide energy range, and are thus widely used in nuclear and particle physics. In rare event searches, such as neutrinoless double beta decay, the point-contact geometry is of particular importance since it allows for pulse-shape discrimination, and therefore for a significant background reduction. In this paper we investigate the pulse-shape discrimination performance of ultra-high purity germanium point contact detectors. It is demonstrated that a minimal net impurity concentration is required to meet the pulse-shape performance requirements.",

keywords = "Germanium detector, Neutrinoless double beta decay, Rare event search",

author = "S. Mertens and A. Hegai and Radford, {D. C.} and N. Abgrall and Chan, {Y. D.} and Martin, {R. D.} and Poon, {A. W.P.} and C. Schmitt",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = mar,

day = "21",

doi = "10.1016/j.nima.2018.09.012",

language = "English",

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journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

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Mertens, S, Hegai, A, Radford, DC, Abgrall, N, Chan, YD, Martin, RD, Poon, AWP & Schmitt, C 2019, 'Characterization of high purity germanium point contact detectors with low net impurity concentration', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 921, pp. 81-88. https://doi.org/10.1016/j.nima.2018.09.012

Characterization of high purity germanium point contact detectors with low net impurity concentration. / Mertens, S.; Hegai, A.; Radford, D. C. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 921, 21.03.2019, p. 81-88.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Characterization of high purity germanium point contact detectors with low net impurity concentration

AU - Mertens, S.

AU - Hegai, A.

AU - Radford, D. C.

AU - Abgrall, N.

AU - Chan, Y. D.

AU - Martin, R. D.

AU - Poon, A. W.P.

AU - Schmitt, C.

PY - 2019/3/21

Y1 - 2019/3/21

N2 - High Purity germanium point-contact detectors have low energy thresholds and excellent energy resolution over a wide energy range, and are thus widely used in nuclear and particle physics. In rare event searches, such as neutrinoless double beta decay, the point-contact geometry is of particular importance since it allows for pulse-shape discrimination, and therefore for a significant background reduction. In this paper we investigate the pulse-shape discrimination performance of ultra-high purity germanium point contact detectors. It is demonstrated that a minimal net impurity concentration is required to meet the pulse-shape performance requirements.

AB - High Purity germanium point-contact detectors have low energy thresholds and excellent energy resolution over a wide energy range, and are thus widely used in nuclear and particle physics. In rare event searches, such as neutrinoless double beta decay, the point-contact geometry is of particular importance since it allows for pulse-shape discrimination, and therefore for a significant background reduction. In this paper we investigate the pulse-shape discrimination performance of ultra-high purity germanium point contact detectors. It is demonstrated that a minimal net impurity concentration is required to meet the pulse-shape performance requirements.

KW - Germanium detector

KW - Neutrinoless double beta decay

KW - Rare event search

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VL - 921

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JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Characterization of high purity germanium point contact detectors with low net impurity concentration

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