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We have developed a neural network model to perform event reconstruction of Compton telescopes. This model reconstructs events that consist of three or more interactions in a detector. It is essential for Compton telescopes to determine the…

Instrumentation and Methods for Astrophysics · Physics 2022-06-22 Satoshi Takashima , Hirokazu Odaka , Hiroki Yoneda , Yuto Ichinohe , Aya Bamba , Tsuguo Aramaki , Yoshiyuki Inoue

Aimed at progress in mega-electron volt (MeV) gamma-ray astronomy, which has not yet been well-explored, Compton telescope missions with a variety of detector concepts have been proposed so far. One of the key techniques for these future…

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

A Compton/Pair telescope, designed to provide spectral resolved images of cosmic photons from sub-MeV to GeV energies, records a wealth of data in a combination of tracking detector and calorimeter. Onboard event classification can be…

Instrumentation and Methods for Astrophysics · Physics 2024-11-05 Jan Peter Lommler , Uwe Oberlack

Compton telescopes rely on the dominant interaction mechanism in the MeV gamma-ray energy range: Compton scattering. By precisely recording the position and energy of multiple Compton scatter interactions in a detector volume, a photon's…

Instrumentation and Methods for Astrophysics · Physics 2023-04-05 Carolyn Kierans , Tadayuki Takahashi , Gottfried Kanbach

Wide-angle, non-imaging air Cherenkov detectors provide a way to observe cosmic gamma-rays which is complementary to observations by imaging Cherenkov telescopes. Their particular strength lies in the multi-TeV to ultra high energy range (E…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 Daniel Hampf , Martin Tluczykont , Dieter Horns

Tracking of gamma-ray interactions in germanium detectors can allow reconstruction of the photon paths, and is useful for many applications. Scrutiny of the kinematics and geometry of gamma rays which are Compton scattered only once prior…

Nuclear Experiment · Physics 2009-11-10 N. J. Hammond , T. Duguet , C. J. Lister

Several large volume, high energy neutrino detectors are in operation or in the design stage. Upward going signal neutrino events must be separated from large backgrounds of downgoing cosmic ray induced atmospheric muons. To this end, a…

Astrophysics · Physics 2007-05-23 Gary C. Hill

The central arm spectrometers for the PHENIX experiment at the Relativistic Heavy Ion Collider have been designed for the optimization of particle identification in relativistic heavy ion collisions. The spectrometers present a challenging…

Nuclear Experiment · Physics 2009-11-07 J. T. Mitchell , PHENIX Collaboration

The goal of the Medium Energy Gamma-ray Astronomy (MEGA) telescope is to improve sensitivity at medium gamma-ray energies (0.4-50 MeV) by at least an order of magnitude over that of COMPTEL. This will be achieved with a new compact design…

Astrophysics · Physics 2019-08-14 P. F. Bloser , R. Andritschke , G. Kanbach , V. Schoenfelder , F. Schopper , A. Zoglauer

An advanced Compton telescope appears to be the best instrument concept for the next generation gamma-ray space observatory in the MeV range. A first prototype of advanced Compton telescope is being developed to match the constraints of a…

Instrumentation and Methods for Astrophysics · Physics 2020-02-27 Adrien Laviron , Valentin Gourlaouen , Clarisse Hamadache , Corentin Hiver , Jürgen Kiener , Jean Peyré , Vincent Tatischeff

Statistical event reconstruction techniques can give better results for gamma cameras than the traditional centroid method. However, implementation of such techniques requires detailed knowledge of the PMT light response functions. Here we…

Medical Physics · Physics 2015-06-11 A. Morozov , V. Solovov , F. Alves , V. Domingos , R. Martins , F. Neves , V. Chepel

Neutron detection provides an effective method to detect, locate, and characterize sources of interest to nuclear security applications. Current neutron imaging systems based on double-scatter kinematic reconstruction provide good signal…

Event cameras are novel vision sensors that sample, in an asynchronous fashion, brightness increments with low latency and high temporal resolution. The resulting streams of events are of high value by themselves, especially for high speed…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 F. Paredes-Vallés , G. C. H. E. de Croon

A future mission in medium-energy gamma-ray astrophysics would allow for many scientific advancements, e.g. a possible explanation for the excess positron emission from the Galactic Center, a better understanding of nucleosynthesis and…

Instrumentation and Methods for Astrophysics · Physics 2018-06-20 Michelle Galloway , Andreas Zoglauer , Steven E. Boggs , Mark Amman

Compton cameras are radiation detectors that provide spatial information on the origin of the {\gamma}-ray sources based on the Compton scattering effect. Many applications require these detectors to be used at high counting rate. As such,…

Diverse searches for direct dark matter (DM) in effective electromagnetic and leptophilic interactions resulting from new physics, as well as Weakly Interacting Massive Particles (WIMPs) with unconventional electronic recoils, are…

We present extensive simulation studies on the performance of algorithms for the Compton sequence reconstruction used for the development of a portable spectroscopic instrument (COCAE), with the capability to localize and identify…

Nuclear Experiment · Physics 2015-03-17 K. Karafasoulis , K. Zachariadou , C. Potiriadis , S. Seferlis , I. Kaissas , D. Loukas , C. Lambropoulos

The $(x, y)$ position reconstruction method used in the analysis of the complete exposure of the Large Underground Xenon (LUX) experiment is presented. The algorithm is based on a statistical test that makes use of an iterative method to…

The large angular and momentum acceptance magnetic spectrometer VAMOS++, at GANIL, France, is frequently used for nuclear structure and reaction dynamics studies. It provides an event-by-event identification of heavy ions produced in…

Instrumentation and Detectors · Physics 2023-07-12 A. Lemasson , M. Rejmund
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