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A paper study is conducted on the detection of fissile material using neutron coincidence counters. Three unknown independent properties of assays of fissile material assays are identified to be the effective mass, the (alpha,n) production…

Instrumentation and Detectors · Physics 2021-10-25 Sebastian Ritter

Coincidence and time-of-flight measurement techniques are employed to tag fission neutrons emitted from a 252Cf source sealed on one side with a very thin layer of Au. The source is positioned within a gaseous 4He scintillator detector.…

The gamma to neutron ratio is measured via Pulse Shape Discrimination (PSD) of a Plutonium Beryllium (PuBe) source and of a rudimentary constructed Polonium Beryllium (PoBe) source using one organic liquid scintillator detector and digital…

Nuclear Experiment · Physics 2021-11-05 Sebastian Ritter

A new concept for thermal neutron based correlation and multiplicity measurements is proposed in this paper. The main idea of the concept consists of using 2.223 MeV gammas (or 1.201 MeV, DE) originating in the 1H(n,gamma)2D-reaction…

Nuclear Experiment · Physics 2015-07-21 Dina Chernikova , Syed F. Naeem , Nermin Trnjanin , Kåre Axell , Anders Nordlund

To address the problem of the shortage of neutron detectors used in radiation portal monitors (RPMs), caused by the 3He supply crisis, research on a cadmium-based capture-gated fast neutron detector is presented in this paper. The detector…

Instrumentation and Detectors · Physics 2016-08-03 Yi Liu , Yigang Yang , Yang Tai , Zhi Zhang

The peak energy resolution of germanium detectors deteriorates with increasing neutron fluence. This is due to hole capture at neutron-created defects in the crystal which prevents the full energy of the gamma-ray from being recorded by the…

Instrumentation and Detectors · Physics 2017-06-13 C. DeW. Van Siclen , E. H. Seabury , C. J. Wharton , A. J. Caffrey

In the field of neutron scattering science, a large variety of instruments require detectors for thermal and cold neutrons. Helium-3 has been one of the main actors in thermal and cold neutron detection for many years. Nowadays neutron…

Instrumentation and Detectors · Physics 2020-07-21 Francesco Piscitelli , Giacomo Mauri , Alessio Laloni , Richard Hall-Wilton

The scattering of lattice excitations (phonons) with the photoexcited charge carriers is of a major concern in optoelectronic devices. Here, the resonant Raman scattering will be utilized to study an exciton-phonon interaction in GaN…

Neutrino elastic scattering observation with NaI (NEON) is an experiment designed to detect neutrino-nucleus coherent scattering using reactor electron antineutrinos. NEON is based on an array of six NaI(Tl) crystals with a total mass of…

High Energy Physics - Experiment · Physics 2023-04-05 J. J. Choi , E. J. Jeon , J. Y. Kim , K. W. Kim , S. H. Kim , S. K. Kim , Y. D. Kim , Y. J. Ko , B. C. Koh , C. Ha , B. J. Park , S. H. Lee , I. S. Lee , H. Lee , H. S. Lee , J. Lee , Y. M. Oh

We present the use of a low background counting facility, equipped with a p-type 80% relative efficiency HPGe detector, protected by active and passive shielding, and large enough to count a 10" photo-multiplier tube (PMT). A GEANT4…

Instrumentation and Detectors · Physics 2011-01-21 M. Fechner , C. Henson , J. Gaffiot , T. Lasserre , A. Letourneau , D. Lhuillier , G. Mention , Th. A. Mueller , R. Quéval , R. Svoboda

The ANTARES telescope has the opportunity to detect transient neutrino sources, such as gamma-ray bursts (GRBs), core-collapse supernovae (SNe), flares of active galactic nuclei (AGNs)... To enhance the sensitivity to these sources, we are…

The 3He-based neutron detectors are no longer the default solution for neutron scattering applications. Both the inability of fulfilling the requirements in performance, needed for the new instruments, and the shortage of 3He, drove a…

Instrumentation and Detectors · Physics 2020-03-13 Giacomo Mauri , Francesco Messi , Kalliopi Kanaki , Richard Hall-Wilton , Francesco Piscitelli

Gallium solar neutrino experiments have historically used radiochemical counting to determine the event rate. A detector which directly measures the ejected electron and de-excitation gamma could reduce background counting rates by way of a…

High Energy Physics - Experiment · Physics 2024-11-27 Jonathan Folkerts , Nick Solomey , Brooks Hartsock , Tyler Nolan , Octavio Pacheco , Gregory Pawloski

Materials selection for rare event physics requires high performance detectors and customized analyses. In this context a novel $\beta$-$\gamma$ detection system, comprised of a liquid scintillator in coincidence with a HPGe, was developed…

Nuclear Experiment · Physics 2022-04-13 A. Barresi , D. Chiesa , M. Nastasi , E. Previtali , M. Sisti

For environmental, sustainable economic and political reasons, recycling processes are becoming increasingly important, aiming at a much higher use of secondary raw materials. Currently, for the copper and aluminium industries, no method…

Machine Learning · Computer Science 2023-02-07 Helmand Shayan , Kai Krycki , Marco Doemeland , Markus Lange-Hegermann

The Gallium anomaly is an unexplained deficit in the neutrinos observed during the calibration of GALLEX and SAGE using a $^{51}$Cr radioactive source and recently confirmed by BEST. The possible explanations for this deficit include an…

High Energy Physics - Phenomenology · Physics 2025-04-30 Emilio Ciuffoli , Jarah Evslin , Ruixuan Gao , Haixing Lin , Jian Tang

This study presents a comprehensive simulation-based optimization of gallium nitride (GaN)-based metal-semiconductor-metal (MSM) photodetectors designed for ultraviolet (UV) applications. The proposed device architecture incorporates a…

Instrumentation and Detectors · Physics 2025-08-12 M. Kilin , O. Tanriverdi , B. Karahan , F. Yasar

The next generation of radioactive ion beam facilities, which will give experimental access to many exotic nuclei, are presently being developed. At the same time the next generation of high resolution gamma-ray spectrometers, based on…

Nuclear Experiment · Physics 2010-02-17 P. -A. Söderström , A. Al-Adili , J. Nyberg , F. Recchia , E. Farnea , A. Gadea