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GZKFast is a low-cost astrophysical event generator designed to simulate photohadron processes resulting from ultra high energy cosmic ray fluxes. GZKFast is an easy to use event generator which specifically addresses issues relevant to…

Astrophysics · Physics 2007-05-23 John A. Cairns

Point-contact p-type high-purity germanium detectors (PPC HPGe) are particularly suited for detection of sub-keV nuclear recoils from coherent elastic scattering of neutrinos or light dark matter particles. While these particles are…

We present a general, discovery-grade framework for searching for weakly coupled new particles emitted in nuclear de-excitation following neutron capture. Rather than relying on isolated spectral features, the method exploits correlated…

Nuclear Experiment · Physics 2026-03-30 B. Meirose , D. Milstead

A new design of a cryogenic germanium detector for dark matter search is presented, taking advantage of the coplanar grid technique of event localisation for improved background discrimination. Experiments performed with prototype devices…

A Geant4-based simulation framework for rare event searching experiments with germanium detectors named SAGE is presented with details. It is designed for simulating, assessing background distribution, and investigating the response of the…

Instrumentation and Detectors · Physics 2021-10-27 Ze She , Hao Ma , Weihe Zeng , Wenhan Dai , Xinping Geng , Ofoq Normahmedov , Jingzhe Yang , Zhi Zeng , Qian Yue , Jianping Cheng , Junli Li

A side-to-side comparison is established between the nuclear recoil energy spectrum from CDMS germanium bolometers and its low-energy equivalent for events in the inner bulk volume of a CoGeNT germanium diode. Acknowledging the…

Cosmology and Nongalactic Astrophysics · Physics 2011-03-18 J. I. Collar

A comprehensive study, supported by systematic measurements and numerical computations, of the intrinsic limits of multi-GEM detectors when exposed to very high particle fluxes or operated at very large gains is presented. The observed…

A standard high purity germanium (HPGe) detector was used to determine the previously unknown neutron activity of a weak americium-beryllium (AmBe) neutron source. Gamma rays were created through 27Al(n,n'), 27Al(n,gamma) and 1H(n,gamma)…

Instrumentation and Detectors · Physics 2016-08-01 M. J. M. Duke , A. L. Hallin , C. B. Krauss , P. Mekarski , L. Sibley

Ge-68 is a cosmogenic isotope in germanium with a half-life of 270.9 days.Ge-68 and its decay daughter Ga-68 contribute considerable background with energy up to 3 MeV to low background $\gamma$ spectrometers using high purity germanium…

Instrumentation and Detectors · Physics 2025-03-28 W. H. Dai , J. K. Chen , H. Ma , Z. Zeng , M. K. Jin , Q. L Zhang , J. P. Cheng

The relevant interaction energies for astrophysical radiative capture reactions are very low, much below the repulsive Coulomb barrier. This leads to low cross sections, low counting rates in $\gamma$-ray detectors, and therefore the need…

Nuclear Experiment · Physics 2019-10-15 T. Szücs , D. Bemmerer , D. Degering , A. Domula , M. Grieger , F. Ludwig , K. Schmidt , J. Steckling , S. Turkat , K. Zuber

We revisit calculations of the cosmogenic production rates for several long-lived isotopes that are potential sources of background in searching for rare physics processes such as the detection of dark matter and neutrinoless double-beta…

Nuclear Experiment · Physics 2014-11-18 D. -M. Mei , Z. -B. Yin , S. R. Elliott

As neutrinoless double-beta decay experiments become more sensitive and intrinsic radioactivity in detector materials is reduced, previously minor contributions to the background must be understood and eliminated. With this in mind,…

We present a study on the inference of cosmological and astrophysical parameters using stacked galaxy cluster profiles. Utilizing the CAMELS-zoomGZ simulations, we explore how various cluster properties--such as X-ray surface brightness,…

The theory of heterodyne/stroboscopic detection of nuclear resonance scattering is developed, starting from the total scattering matrix as a product of the matrix of the reference sample and the sample under study. This general approach…

Materials Science · Physics 2015-03-04 L. Deák , L. Bottyán , R. Callens , R. Coussement , M. Major , S. Nasu , I. Serdons , H. Spiering , Y. Yoda

At third-generation (3G) gravitational-wave detector networks, compact binaries coalescences produce a ``confusion noise'' due to unresolved sources and to the error in the reconstruction of resolved sources, that can degrade the…

General Relativity and Quantum Cosmology · Physics 2024-11-07 Enis Belgacem , Francesco Iacovelli , Michele Maggiore , Michele Mancarella , Niccolò Muttoni

Low-energy background through Compton scattering from the ambient $\gamma$ rays can be contaminated in direct dark matter search experiments. In this paper, we report comparable measurements on low-energy spectra via Compton scattering from…

Instrumentation and Detectors · Physics 2023-04-26 J. W. Hu , L. T. Yang , Q. Yue , X. P. Geng , H. B. Li , Y. F. Liang , S. T. Lin , S. K. Liu , H. Ma , L. Wang , H. T. Wong , B. T. Zhang

CoGeNT employs p-type point-contact (PPC) germanium detectors to search for Weakly Interacting Massive Particles (WIMPs). By virtue of its low energy threshold and ability to reject surface backgrounds, this type of device allows an…

A comprehensive GEANT4 simulation framework was developed to model the background of the TEXONO experiment, including contributions from radioactive isotopes in detector components and the surrounding environment. The HPGe detector…

High Energy Physics - Experiment · Physics 2026-05-19 Subhasis Parhi , Lakhwinder Singh , Manoj Kumar Singh , Henry Tsz-King Wong , Venktesh Singh

Uncertainty propagation to the $\gamma$-$\gamma$ coincidence-summing correction factor from the covariances of the nuclear data and detection efficiencies have been formulated. The method was applied in the uncertainty analysis of the…

Instrumentation and Detectors · Physics 2023-08-09 V. Semkova , N. Otuka , A. J. M. Plompen