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The detection of low-energy deposition in the range of sub-eV through ionization using germanium (Ge) with a bandgap of $\sim$0.7 eV requires internal amplification of charge signal. This can be achieved through high electric field which…

Instrumentation and Detectors · Physics 2022-03-23 W. -Z. Wei , H. Mei , K. Kooi , D. -M. Mei , J. Liu , J. -C. Li , R. Panth , G. -J. Wang

Collinear laser spectroscopy measurements were performed on $^{69,71,73}$Ge isotopes ($Z = 32$) at ISOLDE-CERN. The hyperfine structure of the $4s^2 4p^2 \, ^3P_1 \rightarrow 4s^2 4p 5s \, ^3P_1^o$ transition of the germanium atom was…

High Purity Germanium (HPGe) detectors are powerful detectors for gamma-ray spectroscopy. The sensitivity to low-intensity gamma-ray peaks is often hindered by the presence of Compton continuum distributions, originated by gamma-rays…

One IGEX 76Ge double-beta decay detector is currently operating in the Canfranc Underground Laboratory in a search for dark matter WIMPs, through the Ge nuclear recoil produced by the WIMP elastic scattering. A new exclusion plot, has been…

We report the fabrication and characterization of an electrostatic quantum dot in pure Germanium with an integrated charge measurement transistor. The device uses the Al2O3/Germanium interface for the confinement of carriers in the…

Mesoscale and Nanoscale Physics · Physics 2010-09-01 G. Mazzeo , E. Yablonovitch , H. W. Jiang

The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta ($0\nu\beta\beta$) decay of $^{76}$Ge. The technological challenge of GERDA is to operate in a…

Nuclear Experiment · Physics 2020-04-02 GERDA collaboration , Matteo Agostini , Alexander M. Bakalyarov , Marco Balata , Igor Barabanov , Laura Baudis , Christian Bauer , Enrico Bellotti , Sergej Belogurov , Alessandro Bettini , Leonid Bezrukov , Dariusz Borowicz , Elisabetta Bossio , Vikas Bothe , Victor Brudanin , Riccardo Brugnera , Allen Caldwell , Carla Cattadori , Andrey Chernogorov , Tommaso Comellato , Valerio D'Andrea , Elena V. Demidova , Natalia Di Marco , Alexander Domula , Evgenyi Doroshkevich , Viacheslav Egorov , Felix Fischer , Maria Fomina , Albert Gangapshev , Alberto Garfagnini , Chris Gooch , Peter Grabmayr , Valery Gurentsov , Konstantin Gusev , Janina Hakenmüller , Sabine Hemmer , Roman Hiller , Werner Hofmann , Mikael Hult , Lev V. Inzhechik , Jozsef Janicskó Csáthy , Josef Jochum , Matthias Junker , Vladimir Kazalov , Yoann Kermaïdic , Thomas Kihm , Igor V. Kirpichnikov , Alexander Klimenko , Raphael Kneißl , Karl T. Knöpfle , Oleg Kochetov , Vasily N. Kornoukhov , Patrick Krause , Valery V. Kuzminov , Matthias Laubenstein , Andrea Lazzaro , Manfred Lindner , Ivano Lippi , Alexey Lubashevskiy , Bayarto Lubsandorzhiev , Guillaume Lutter , Carla Macolino , Bela Majorovits , Werner Maneschg , Michael Miloradovic , Rizalina Mingazheva , Marcin Misiaszek , Pavel Moseev , Igor Nemchenok , Krysztof Panas , Luciano Pandola , Krysztof Pelczar , Luigi Pertoldi , Paolo Piseri , Alberto Pullia , Chloe Ransom , Stefano Riboldi , Nadezda Rumyantseva , Cinzia Sada , Francesco Salamida , Stefan Schönert , Jochen Schreiner , Mario Schütt , Ann-Katrin Schütz , Oliver Schulz , Mario Schwarz , Bernhard Schwingenheuer , Oleg Selivanenko , Egor Shevchik , Mark Shirchenko , Hardy Simgen , Anatoly Smolnikov , Danila Stukov , Laura Vanhoefer , Andrey A. Vasenko , Anna Veresnikova , Chiara Vignoli , Katharina von Sturm , Thomas Wester , Christoph Wiesinger , Marcin Wojcik , Evgeny Yanovich , Birgit Zatschler , Igor Zhitnikov , Sergey V. Zhukov , Daniya Zinatulina , Andreas Zschocke , Anna J. Zsigmond , Kai Zuber , Grzegorz Zuzel

Next generation low-background experiments require a detailed understanding of all possible radiation backgrounds. One important radiation source are muon-induced neutrons. Their production processes are up to now not fully understood. New…

Instrumentation and Detectors · Physics 2019-04-04 R. Kneißl , A. Caldwell , Q. Du , A. Empl , C. Gooch , X. Liu , B. Majorovits , M. Palermo , O. Schulz

In a broad class of consistent models, MeV to few-GeV dark matter interacts with ordinary matter through weakly coupled GeV-scale mediators. We show that a suitable meter-scale (or smaller) detector situated downstream of an electron…

High Energy Physics - Phenomenology · Physics 2014-02-05 Eder Izaguirre , Gordan Krnjaic , Philip Schuster , Natalia Toro

To build upon the goals of the upcoming INTEGRAL mission, the next generation soft gamma-ray (0.2-20 MeV) observatory will require improved sensitivity to nuclear line emission while maintaining high spectral resolution. We present the…

Astrophysics · Physics 2007-05-23 Steven E. Boggs , Pierre Jean

The Belgrade underground laboratory consists of two interconnected spaces, a ground level laboratory and a shallow underground one, at 25 m.w.e.. The laboratory hosts a low-background gamma spectroscopy system and cosmic-ray muon detectors.…

We demonstrate that current and planned underground neutrino experiments could offer a powerful probe of few-MeV dark matter when combined with a nearby high-intensity low-to-medium energy electron accelerator. This experimental setup, an…

High Energy Physics - Phenomenology · Physics 2015-11-18 Eder Izaguirre , Gordan Krnjaic , Maxim Pospelov

We present the first search for low mass WIMPs using the Germanium bolometers of the EDELWEISS-III experiment. Upgrades to the detectors and the electronics enhance the background discrimination and the low energy sensitivity with respect…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-14 Thibault de Boissière

We present a tabletop six-axis vibration isolation system, compatible with Ultra-High Vacuum (UHV), which is actively damped and provides 25 dB of isolation at 10 Hz and 65 dB at 100 Hz. While this isolation platform has been primarily…

The application of a high purity germanium (HPGe) gamma spectrometer in determining the fuel element burnup in a future reactor is studied. The HPGe detector is exposed by a Co60 source with varying irradiation rate from 10 kcps to 150 kcps…

Instrumentation and Detectors · Physics 2013-05-07 Weihua Yan , Liguo Zhang , Zhao Zhang , Zhigang Xiao

Quantum electronic devices at the single impurity level demand an understanding of the physical attributes of dopants at an unprecedented accuracy. Germanium-based technologies have been developed recently, creating a necessity to adapt the…

Mesoscale and Nanoscale Physics · Physics 2017-01-16 A. Baena , A. L. Saraiva , Marcos G. Menezes , Belita Koiller

Ultra-sensitive in-beam gamma-ray spectroscopy studies for nuclear astrophysics are performed at the LUNA (Laboratory for Underground Nuclear Astrophysics) 400 kV accelerator, deep underground in Italy's Gran Sasso laboratory. By virtue of…

The GALILEO $\gamma$-ray spectrometer has been constructed at the Legnaro National Laboratory of INFN (LNL-INFN). It can be coupled to advanced ancillary devices which allows nuclear structure studies employing the variety of in-beam…

The Edelweiss programme is dedicated to the direct search for Dark Matter as massive weakly interacting particles (WIMPs) with Germanium cryogenic detectors operated in the Laboratoire Souterrain de Modane in the French Alps at a depth of…

Astrophysics · Physics 2007-11-01 A. Chantelauze

GERDA, the GERmanium Detector Array experiment, is a new double beta-decay experiment which is currently under construction in the INFN National Gran Sasso Laboratory (LNGS), Italy. It is implementing a new shielding concept by operating…

High Energy Physics - Experiment · Physics 2008-10-17 Karl-Tasso Knoepfle