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The sensitivities of large arrays of low-background germanium detectors for solar axion searches are investigated in the context of three coupling scenarios. A search was made for the 14.4-keV axion branch from the M1-transition in the…

Nuclear Experiment · Physics 2009-11-06 F. T. Avignone

Americium-beryllium (AmBe), a well-known tagged neutron source, is commonly used for evaluating the neutron detection efficiency of detectors used in ultralow background particle physics experiments, such as reactor neutrino and diffuse…

Instrumentation and Detectors · Physics 2023-09-29 Hiroshi Ito , Kohei Wada , Takatomi Yano , Yota Hino , Yuga Ommura , Masayuki Harada , Akihiro Minamino , Masaki Ishitsuka

We report an experimental study of quantum point contacts defined in a high-quality strained germanium quantum well with layered electric gates. At zero magnetic field, we observe quantized conductance plateaus in units of 2$e^2/h$.…

Mesoscale and Nanoscale Physics · Physics 2024-05-07 Han Gao , Zhen-Zhen Kong , Po Zhang , Yi Luo , Haitian Su , Xiao-Fei Liu , Gui-Lei Wang , Ji-Yin Wang , H. Q. Xu

Radiation transport models of two high purity germanium detectors, GeII and GeIII, located at the University of Alabama have been created in GEANT4 \cite{geant4}. These detectors have been used extensively for radioassay measurements of…

Instrumentation and Detectors · Physics 2019-04-30 R. H. M. Tsang , A. Piepke , D. J. Auty , B. Cleveland , S. Delaquis , T. Didberidze , R. MacLellan , Y. Meng , O. Nusair , T. Tolba

We explore the possibility to use advanced germanium (Ge) detectors as a low-energy solar neutrino observatory by means of neutrino-nucleus elastic scattering. A Ge detector utilizing internal charge amplification for the charge carriers…

Instrumentation and Detectors · Physics 2021-09-03 S. Bhattarai , D. -M. Mei , M. -S. Raut

A VME-based experiment system for n-{\gamma} discrimination using the charge comparison method was established. A data acquisition program for controlling the programmable modules and processing data online via VME64X bus was developed…

Instrumentation and Detectors · Physics 2015-06-17 Yonghao Chen , Ximeng Chen , Xiaodong Zhang , Jiarong Lei , Li An , Jianxiong Shao , Pu Zheng , Xinhua Wang , Chuanxin Zhu , Tie He , Jian Yang

We report the fabrication and characterization of two p-type inverted coaxial point contact (ICPC) high-purity germanium (HPGe) detectors, SAP16 and SAP17, produced from USD-grown crystals with net impurity concentrations of $\sim…

Instrumentation and Detectors · Physics 2026-02-04 S. A. Panamaldeniya , K. M. Dong , D. M. Mei

The tagging system of the KEDR detector is a symmetrical focusing magnetic spectrometer for electrons and positrons scattered at small angles; it is embedded into the lattice of the VEPP-4M collider and intended for two-photon processes…

Instrumentation and Detectors · Physics 2017-09-13 V. V. Kaminskiy , N. Yu. Muchnoi , V. N. Zhilich

In order to fully reconstruct to the reaction e+e- to e+e- gamma-gamma in the energy region of the phi meson production, new detectors along the DAFNE beam line have to be installed in order to detect the scattered e+e-. The High Energy…

Instrumentation and Detectors · Physics 2015-06-05 D. Babusci , F. Gonnella , L. Iafolla , M. Iannarelli , M. Mascolo , R. Messi , D. Moricciani , A. Saputi , E. Turri

A stack of CR39 (C12H18O7)n nuclear track detectors with a Cu target was exposed to a 158 A GeV lead ion beam at the CERN-SPS, in order to study the fragmentation properties of lead nuclei. Measurements of the total, break-up and pick-up…

High Energy Physics - Experiment · Physics 2019-08-14 M. Giorgini , S. Manzoor

A novel radiation detector based on an artificial single crystal diamond was used to characterize in detail the energy distribution of neutron reference fields at the Physikalisch-Technische Bundesanstalt (PTB) and their contamination with…

Instrumentation and Detectors · Physics 2010-12-15 A. Zimbal , L. Giacomelli , R. Nolte , H. Schuhmacher

The GERmanium Detector Array GERDA experiment, located at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN, searches for $0\nu\beta\beta$ of $^{76}$Ge. Germanium diodes enriched to $\sim 86~\%$ in the double beta emitter $^{76}$Ge…

Instrumentation and Detectors · Physics 2019-08-13 Valerio D'Andrea

The Gas Pixel Detector belongs to the very limited class of gas detectors optimized for the measurement of X-ray polarization in the emission of astrophysical sources. The choice of the mixture in which X-ray photons are absorbed and…

Instrumentation and Methods for Astrophysics · Physics 2015-05-18 F. Muleri , P. Soffitta , L. Baldini , R. Bellazzini , A. Brez , E. Costa , S. Fabiani , F. Krummenacher , L. Latronico , F. Lazzarotto , M. Minuti , M. Pinchera , A. Rubini , C. Sgro , G. Spandre

The FREGATE gamma ray detector of HETE-2 is sensitive to photons between 6 and 400 keV. This sensitivity range, extended towards low energies, allows us to explore the emission of GRBs in hard X-rays. We fit the spectra of 23 GRBs with…

Astrophysics · Physics 2016-08-30 C. Barraud , J. L. Atteia , J. F. Olive , J. P. Dezalay

With an MBE technique, a Si/Ge heterostructures are prepared containing layers of nanostructured Ge with quantum dots of size of several nanometers. The effective conductivity of the layers is determined by a quasioptical…

A comprehensive set of 4He(g,n) absolute cross-section measurements has been performed at MAX-lab in Lund, Sweden. Tagged photons from 23 < Eg < 70 MeV were directed toward a liquid 4He target, and neutrons were identified using pulse-shape…

Nuclear Experiment · Physics 2008-11-26 B. Nilsson

Our collaboration has set up a focal plane detection system and a focal plane polarimeter at the large acceptance Big-Bite Spectrometer at AGOR. The detector systems are equipped with a high performance readout and online data processing…

Nuclear Experiment · Physics 2017-08-23 H. J. Woertche

The GERDA (GERmanium Detector Array) experiment aiming to search for the neutrinoless double beta decay of 76Ge at the Laboratori Nazionali Del Gran Sasso (LNGS), Italy, will operate bare enriched high-purity germanium (HPGe) detectors in…

The aim of the SELENDIS project within the EDELWEISS collaboration is to observe single $e^- h^+$ pairs in lightweight (3.3 g) cryogenic germanium bolometers with charge and phonon readout at biases up to $\sim 100$ V. These devices are…

Instrumentation and Detectors · Physics 2022-09-07 H. Lattaud , Q. Arnaud , J. Billard , J. Colas , L. Dumoulin , M. De Jésus , A. Juillard , J. Gascon , S. Marnieros , C. Oriol

Gaseous detectors are used in high energy physics as trackers or, more generally, as devices for the measurement of the particle position. For this reason, they must provide high spatial resolution and they have to be able to operate in…