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We have developed a position-sensitive scintillation camera with a large area absorber for use as an advanced Compton gamma-ray camera. At first we tested GSO(Ce) crystals. We compared light output from the GSO(Ce) crystals under various…

Astrophysics · Physics 2008-11-26 H. Nishimura , K. Hattori , H. Kubo , T. Tanimori

State of the art X-ray imaging sensors comprise a trade-off between the achievable efficiency and the spatial resolution. To overcome such limitations, the use of structured and scintillator filled aluminum oxide (AlOx) matrices has been…

Instrumentation and Detectors · Physics 2015-06-03 Joerg Muehlbauer , Frank Sukowski , Nils Reims , Peter Krueger , Juergen Schreiber , Nikolai I. Mukhurov , Norman Uhlmann

In this study, we explore an approach aimed at enhancing the transmission or reflection coefficients of absorbing materials through the utilization of joint measurements of entangled photon states. On the one hand, through the…

Results of detailed simulations of the charge transfer inefficiency of a prototype CCD chip are reported. The effect of radiation damage in a particle detector operating at a future accelerator is studied by examining two electron trap…

To meet high radiation challenge for detectors in future high-energy physics, a novel 3D 4H-SiC detector was investigated. SiC detectors could potentially operate in radiation harsh and room temperature environment because of its high…

An innovative X-ray imaging sensor with intrinsic digital characteristics is presented. It is based on Chromatic Photon Counting technology. The detector is able to count individually the incident X-ray photons and to separate them…

Instrumentation and Detectors · Physics 2015-06-11 R. Bellazzini , G. Spandre , A. Brez , M. Minuti , M. Pinchera , P. Mozzo

We present a methodology to calculate radiative carrier capture coefficients at deep defects in semiconductors and insulators from first principles. Electronic structure and lattice relaxations are accurately described with hybrid density…

Materials Science · Physics 2020-08-07 Cyrus E. Dreyer , Audrius Alkauskas , John L. Lyons , Chris G. Van de Walle

This paper, presents a simple method for accurate calibration of organic scintillation detectors. The method is based on the fact that differentiating the response function leads to accurate estimation of the Compton edge. The…

Instrumentation and Detectors · Physics 2024-09-04 M. J. Safari , F. Abbasi Davani , H. Afarideh

Monte Carlo simulations are a crucial tool for the analysis and prediction of various background components in liquid xenon (LXe) detectors. With improving shielding in new experiments, the simulation of external backgrounds, such as…

Instrumentation and Detectors · Physics 2021-03-31 S. Bruenner , A. P. Colijn , M. P. Decowski , O. V. Kesber

The PICOSEC Micromegas detector is a~precise-timing gaseous detector based on a~Cherenkov radiator coupled with a~semi-transparent photocathode and a~Micromegas amplifying structure, targeting a~time resolution of tens of picoseconds for…

We describe a new iteration method to estimate asteroid coordinates, which is based on the subpixel Gaussian model of a discrete object image. The method operates by continuous parameters (asteroid coordinates) in a discrete observational…

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…

Instrumentation and Methods for Astrophysics · Physics 2023-04-05 Denis Bernard , Stanley D. Hunter , Toru Tanimori

Hybrid semiconductor pixelated detectors from the Timepix family are advanced detectors for online particle tracking, offering energy measurement and precise time stamping capabilities for particles of various types and energies. This…

Medical Physics · Physics 2024-04-23 Marek Lukas , Granja Carlos , Jakubek Jan , Ingerle Jan , Turecek Daniel , Vuolo Marco , Oancea Cristina

Experiments aiming to directly detect dark matter through particle recoils can achieve energy thresholds of $\mathcal{O}(1\,\mathrm{eV})$. In this regime, ionization signals from small-angle Compton scatters of environmental $\gamma$-rays…

Autonomous vehicles are conceived to provide safe and secure services by validating the safety standards as indicated by SOTIF-ISO/PAS-21448 (Safety of the intended functionality). Keeping in this context, the perception of the environment…

Computer Vision and Pattern Recognition · Computer Science 2021-12-01 Shoaib Azam , Farzeen Munir , Moongu Jeon

We study the photon detection efficiency and position resolution of the electromagnetic calorimeter (EMC) of the BESIII experiment. The control sample of the initial-state-radiation (ISR) process of $e^+e^-\rightarrow \gamma \mu^+\mu^-$ is…

High Energy Physics - Experiment · Physics 2018-10-04 Vindhyawasini Prasad , Chunxiu Liu , Xiaobin Ji , Weidong Li , Huaimin Liu , Xinchou Lou

In order to evaluate the response to cosmic-ray nuclei of a Compton-Scatter Transition Radiation Detector in the proposed ACCESS space-based mission, a hybrid Monte Carlo simulation using GEANT3 and an external transition radiation (TR)…

Instrumentation and Detectors · Physics 2009-11-11 John F. Krizmanic , Michael L. Cherry , Robert E. Streitmatter

Performance of nuclear threat detection systems based on gamma-ray spectrometry often strongly depends on the ability to identify the part of measured signal that can be attributed to background radiation. We have successfully applied a…

Machine Learning · Computer Science 2016-05-30 P. Tandon , P. Huggins , A. Dubrawski , S. Labov , K. Nelson

Single-Photon Avalanche Diodes (SPAD) are affordable photodetectors, capable to collect extremely fast low-energy events, due to their single-photon sensibility. This makes them very suitable for time-of-flight-based range imaging systems,…

Instrumentation and Detectors · Physics 2017-03-09 Quercus Hernandez , Diego Gutierrez , Adrian Jarabo

Investigation of HV-CMOS sensors for use as a tracking detector in the ATLAS experiment at the upgraded LHC (HL-LHC) has recently been an active field of research. A potential candidate for a pixel detector built in Silicon-On-Insulator…

Instrumentation and Detectors · Physics 2017-10-27 B. Hiti , V. Cindro , A. Gorišek , T. Hemperek , T. Kishishita , G. Kramberger , H. Krüger , I. Mandić , M. Mikuž , N. Wermes , M. Zavrtanik