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The diffuse Galactic gamma-ray emission is produced by cosmic rays (CRs) interacting with the interstellar gas and radiation field. Measurements by the Energetic Gamma-Ray Experiment Telescope (EGRET) instrument on the Compton Gamma-Ray…

高能天体物理现象 · 物理学 2010-04-23 LAT Collaboration

The observation of the low-energy $\gamma$-ray (0.1-30 MeV) sky has been significantly limited since the COMPTEL instrument was decommissioned aboard the Compton Gamma-ray Observer (CGRO) satellite in 2000. The exploration of $\gamma$-ray…

天体物理仪器与方法 · 物理学 2024-12-25 Rishank Diwan , Kees de Kuijper , Partha Sarathi Pal , Andreas Ritter , Pablo Saz Parkinson , Andy C. T. Kong , Quentin Parker

The Imaging Air Cherenkov Telescopes (IACTs), like, HESS, MAGIC and VERITAS well demonstrated their performances by showing many exciting results at very high energy gamma ray domain, mainly between 100 GeV and 10 TeV. It is important to…

天体物理仪器与方法 · 物理学 2009-06-26 M. Teshima , E. Carmona , P. Colin , P. Majumdar , T. Schweizer

We propose and demonstrate that a gamma-gamma collider with W_gg < 12 GeV can be added to the European XFEL with a minimal disruption to its main program. High-energy photons will be obtained by Compton scattering of 0.5 micron laser…

加速器物理 · 物理学 2020-12-30 V. I. Telnov

We present the results of the first high-altitude balloon flight test of a concept for an advanced Compton telescope making use of modern scintillator materials with silicon photomultiplier (SiPM) readouts. There is a need in the fields of…

天体物理仪器与方法 · 物理学 2016-02-25 P. F. Bloser , J. S. Legere , C. M. Bancroft , J. M. Ryan , M. L. McConnell

The Energetic Gamma-Ray Experiment Telescope (EGRET) experiment onboard the Compton Gamma-Ray Observatory (CGRO) has provided the most precise measurements of the gamma-ray sky to date. The EGRET measurements of the diffuse emission across…

天体物理学 · 物理学 2007-06-05 B. M. Baughman , W. B. Atwood , R. P. Johnson , T. A. Porter , M. Ziegler

The Compton camera is a promising alternative to the Anger camera for imaging gamma radiation, with the potential to significantly increase the sensitivity of SPECT. Two-dimensional Compton camera image reconstruction can be implemented by…

数值分析 · 数学 2016-09-13 Markus Haltmeier , Sunghwan Moon , Daniela Schiefeneder

The Cherenkov Telescope Array (CTA) will be the next-generation observatory in the field of very-high-energy (20 GeV to 300 TeV) gamma-ray astroparticle physics. Classically, data analysis in the field maximizes sensitivity by applying…

天体物理仪器与方法 · 物理学 2021-08-24 T. Hassan , O. Gueta , G. Maier , M. Nöthe , M. Peresano , I. Vovk

The detection of photons with energies greater than a few tenths of an MeV, interacting via Compton scattering and/or pair production, faces a number of difficulties. The reconstruction of single-scatter Compton events can only determine…

天体物理仪器与方法 · 物理学 2023-04-05 Denis Bernard , Stanley D. Hunter , Toru Tanimori

The gamma-ray energy range from a few hundred keV to a few hundred MeV has remained largely unexplored, mainly due to the challenging nature of the measurements, since the pi- oneering, but limited, observations by COMPTEL on the Compton…

An implementation of A Common Tracking Software (ACTS) toolkit for signal electron reconstruction for the COMET muon to electron conversion experiment is discussed. The COMET experiment in J-PARC, Japan, will search for neutrinoless…

高能物理 - 实验 · 物理学 2024-01-17 Amaia Razquin , MyeongJae Lee

Intensity-modulated proton therapy (IMPT) employs proton radiation rather than conventional X-rays to treat cancerous tumors. This approach offers significant advantages by minimizing the radiation exposure of surrounding healthy tissue,…

A sensitive survey of the MeV gamma-ray sky is needed to understand important astrophysical problems such as gamma-ray bursts in the early universe, progenitors of Type Ia supernovae, and the nature of dark matter. However, the study has…

The GCT is a dual-mirror Small-Sized-Telescope prototype proposed for the Cherenkov Telescope Array. Calibration of the GCT's camera is primarily achieved with LED-based flasher units capable of producing $\sim4$ ns FWHM pulses of 400 nm…

天体物理仪器与方法 · 物理学 2019-08-14 Anthony M. Brown , Thomas Armstrong , Paula M. Chadwick , Michael Daniel , Richard White

We present performance studies of a segmented optical module for the IceCube-Gen2 detector. Based on the experience gained in sensor development for the IceCube Upgrade, the new sensor will consist of up to eighteen 4 inch PMTs housed in a…

天体物理仪器与方法 · 物理学 2021-08-23 Nobuhiro Shimizu , Aya Ishihara , Alexander Kappes

Photon-counting CT (PCCT) provides superior image quality with higher spatial resolution and lower noise compared to conventional energy-integrating CT (EICT), but its limited clinical availability restricts large-scale research and…

计算机视觉与模式识别 · 计算机科学 2026-04-09 Junqi Liu , Xinze Zhou , Wenxuan Li , Scott Ye , Arkadiusz Sitek , Xiaofeng Yang , Yucheng Tang , Daguang Xu , Kai Ding , Kang Wang , Yang Yang , Alan L. Yuille , Zongwei Zhou

The LAT instrument on the Fermi Gamma-Ray Space Telescope is performing an all-sky survey from 20 MeV to 300 GeV with unprecedented statistics and angular resolution. This is providing a wealth of new information on the non-thermal emission…

高能天体物理现象 · 物理学 2019-08-14 A. W. Strong

We have analyzed and compared the performance of two novel fast-neutron imaging methods with time-of-flight spectroscopy capability. Using MCNP and GEANT code simulations of neutron and charged-particle transport in the detectors, key…

仪器与探测器 · 物理学 2009-11-10 D. Vartsky , I. Mor , M. B. Goldberg , I. Mardor , G. Feldman , D. Bar , A. Shor , V. Dangendorf , G. Laczko , A. Breskin , R. Chechik

Building on the success of the Energetic Gamma Ray Experiment Telescope (EGRET) on the Compton Gamma Ray Observatory, the Gamma-ray Large Area Space Telescope (GLAST) will make a major step in the study of such subjects as blazars,…

天体物理学 · 物理学 2019-08-14 T. Kamae , T. Ohsugi , D. J. Thompson , K. Watanabe