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High Purity Germanium Detectors
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High Purity Germanium Detectors

A special issue of Particles (ISSN 2571-712X).

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 4288

Special Issue Editors

Dr. Bjoern Lehnert

E-Mail Website
Guest Editor
Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
Interests: neutrino; dark matter; KATRIN; LEGEND; DEAP-3600
Dr. Reynold Cooper

E-Mail Website
Guest Editor
Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
Interests: nuclear physics; radiation detection; gamma-ray imaging

Special Issue Information

Dear Colleagues,

Since their invention in the 1970s, high purity germanium (HPGe) detectors have been the gold standard for the detection and spectroscopy of gamma rays. Developments in the fabrication, packaging, and operation of HPGe detectors, as well as in readout electronics and signal processing, have led to their application in fields as diverse as fundamental nuclear and particle physics, nuclear security and safety, and medicine. For example, position-sensitive HPGe detectors have been used to develop portable gamma-ray imaging systems, while extremely large HPGe detectors arrays are under development for the search for neutrinoless double beta decay.

This Special Issue aims to capture the science and technology of HPGe detectors and highlight the breadth and impact of their application in basic and applied science.

We invite contributions that describe all aspects of HPGe detector technology, including but not limited to device design and fabrication, modeling and characterization, signal processing, and applications.

Dr. Bjoern Lehnert
Dr. Reynold Cooper
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Particles is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • high-purity germanium
  • semiconductor
  • radiation detection

Published Papers (1 paper)

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Research

23 pages, 2275 KiB  
Article
Surface Characterization of P-Type Point Contact Germanium Detectors
by Frank Edzards, Lukas Hauertmann, Iris Abt, Chris Gooch, Björn Lehnert, Xiang Liu, Susanne Mertens, David C. Radford, Oliver Schulz and Michael Willers
Particles 2021, 4(4), 489-511; https://doi.org/10.3390/particles4040036 - 20 Oct 2021
Cited by 3 | Viewed by 3017
Abstract
P-type point contact (PPC) germanium detectors are used in rare event and low-background searches, including neutrinoless double beta (0νββ) decay, low-energy nuclear recoils, and coherent elastic neutrino-nucleus scattering. The detectors feature an excellent energy resolution, low detection thresholds down to the sub-keV range, [...] Read more.
P-type point contact (PPC) germanium detectors are used in rare event and low-background searches, including neutrinoless double beta (0νββ) decay, low-energy nuclear recoils, and coherent elastic neutrino-nucleus scattering. The detectors feature an excellent energy resolution, low detection thresholds down to the sub-keV range, and enhanced background rejection capabilities. However, due to their large passivated surface, separating the signal readout contact from the bias voltage electrode, PPC detectors are susceptible to surface effects such as charge build-up. A profound understanding of their response to surface events is essential. In this work, the response of a PPC detector to alpha and beta particles hitting the passivated surface was investigated in a multi-purpose scanning test stand. It is shown that the passivated surface can accumulate charges resulting in a radial-dependent degradation of the observed event energy. In addition, it is demonstrated that the pulse shapes of surface alpha events show characteristic features which can be used to discriminate against these events. Full article
(This article belongs to the Special Issue High Purity Germanium Detectors)
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