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This work is a methodical study on hybrid reconstruction techniques for hybrid imaging/timing Cherenkov observations. This type of hybrid array is to be realized at the gamma-observatory TAIGA intended for very high energy gamma-ray…

Instrumentation and Methods for Astrophysics · Physics 2018-08-29 E. B. Postnikov , A. A. Grinyuk , L. A. Kuzmichev , L. G. Sveshnikova

The efficient classification of different types of supernova is one of the most important problems for observational cosmology. However, spectroscopic confirmation of most objects in upcoming photometric surveys, such as the The Rubin…

Cosmology and Nongalactic Astrophysics · Physics 2020-08-17 Marcelo Vargas dos Santos , Miguel Quartin , Ribamar R. R. Reis

In the framework of the development of the SWGO experiment we have performed a detailed study of the single unit of an extensive air shower observatory based on an array of water Cherenkov detectors. Indeed, one of the possible water…

Instrumentation and Methods for Astrophysics · Physics 2022-05-05 Francesca Bisconti , Andrea Chiavassa

HAWC is a ground-based observatory consisting of 300 water Cherenkov detectors, which observes the extensive air showers induced by cosmic rays from some TeV to a few PeV and, in particular, gamma rays from 300 GeV to more than 100 TeV. One…

High Energy Astrophysical Phenomena · Physics 2023-10-12 A. Alvarado , T. Capistrán , I. Torres , J. R. SacahuÍ , R. Alfaro

The use of machine learning algorithms is an attractive way to produce very fast detector simulations for scattering reactions that can otherwise be computationally expensive. Here we develop a factorised approach where we deal with each…

Data Analysis, Statistics and Probability · Physics 2022-07-26 D. Darulis , R. Tyson , D. G. Ireland , D. I. Glazier , B. McKinnon , P. Pauli

Water Cherenkov detectors like Super-Kamiokande, and the next generation Hyper-Kamiokande are adding gadolinium to their water to improve the detection of neutrons. By detecting neutrons in addition to the leptons in neutrino interactions,…

Instrumentation and Detectors · Physics 2023-01-16 Blair Jamieson , Matt Stubbs , Sheela Ramanna , John Walker , Nick Prouse , Ryosuke Akutsu , Patrick de Perio , Wojciech Fedorko

Machine-learning (ML) techniques are explored to identify and classify hadronic decays of highly Lorentz-boosted W/Z/Higgs bosons and top quarks. Techniques without ML have also been evaluated and are included for comparison. The…

High Energy Physics - Experiment · Physics 2020-06-09 CMS Collaboration

The demand for novel detector mediums such as Water-based Liquid Scintillator (WbLS) has increased over the last few decades due to their capability for both low energy particle interactions and higher light yield. Recently, the usage of…

High Energy Physics - Experiment · Physics 2024-06-14 Emrah Tiras , Merve Tas , Dilara Kizilkaya , Muhammet Anil Yagiz , Mustafa Kandemir

A detailed case study of $\gamma$-hadron segregation for a ground based atmospheric Cherenkov telescope is presented. We have evaluated and compared various supervised machine learning methods such as the Random Forest method, Artificial…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 Mradul Sharma , J. Nayak , M. K. Koul , S. Bose , Abhas Mitra

The CoMET is an R$\&$D project aiming to design a very-high-energy (VHE) gamma-ray observatory sensitive to energies above $\sim$ 200 GeV. The science goals include continuous observation of soft-spectrum VHE gamma-ray sources such as…

Instrumentation and Methods for Astrophysics · Physics 2021-07-28 M. Senniappan , Y. Becherini , M. Punch , S. Thoudam , T. Bylund , G. Kukec Mezek , J. -P. Ernenwein

New results of modeling the operation of the new SPHERE-3 Cherenkov telescope are presented. The telescope will be able to detect cosmic particles by direct and reflected Cherenkov light of the extensive air showers (EAS). Dual detection…

A new method of shower-image analysis is presented which appears very powerful as applied to those Cherenkov Imaging Telescopes with very high definition imaging capability. It provides hadron rejection on the basis of a single cut on the…

The planned Cherenkov Telescope Array (CTA) is a future observatory for very-high-energy (VHE) gamma-ray astronomy composed of one site per hemisphere. It aims at 10 times better sensitivity, a better angular resolution and wider energy…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Y. Becherini , B. Khélifi , S. Pita , M. Punch

The time profiles of Cherenkov images of cosmic-ray showers and of gamma-ray showers are investigated, using data gathered with the HEGRA system of imaging atmospheric Cherenkov telescopes during the 1997 outbursts of Mrk 501. Photon…

Astrophysics · Physics 2009-10-31 HEGRA Collaboration , M. Hess et al

This work summarizes the results presented at 29th International Cosmic Ray Conference in Pune India. Generally the aim of this work is to obtain the lateral distribution of the atmospheric Cherenkov light in extensive air showers produced…

Astrophysics · Physics 2007-05-23 Alexander Mishev , Strashimir Mavrodiev , Jordan Stamenov

We present analysis techniques to improve the energy resolution of stereoscopic systems of imaging atmospheric Cherenkov telescopes, using the HEGRA telescope system as an example. The techniques include (i) the determination of the height…

Astrophysics · Physics 2011-05-23 W. Hofmann , H. Lampeitl , A. Konopelko , H. Krawczynski

The sensitivity of ground-based imaging atmospheric Cherenkov gamma-ray observatories depends critically on the primary particle identification methods which are used to retain photon-initiated events and suppress the spurious background…

Astrophysics · Physics 2014-10-13 V. V. Bugaev , A. V. Plyasheshnikov , V. V. Vassiliev , T. C. Weekes

We present an analysis technique that uses the timing information of Cherenkov images from extensive air showers (EAS). Our emphasis is on distant, or large core distance gamma-ray induced showers at multi-TeV energies. Specifically,…

Instrumentation and Methods for Astrophysics · Physics 2011-05-03 V. Stamatescu , G. P. Rowell , J. Denman , R. W. Clay , B. R. Dawson , A. G. K. Smith , T. Sudholz , G. J. Thornton , N. Wild

The observation of very-high-energy (VHE, E>100 GeV) gamma rays is mediated by the imaging atmospheric Cherenkov technique (IACTs). At these energies, gamma rays interact with the atmosphere to create a cascade of electromagnetic air…

High Energy Astrophysical Phenomena · Physics 2023-09-22 Deivid Ribeiro , Yuping Zheng , Ramana Sankar , Kameswara Mantha

We investigate possible sky survey modes with the Middle Sized Telescopes (MST, aimed at covering the energy range from $\sim$100 GeV to 10 TeV) subsystem of the Cherenkov Telescope Array (CTA). We use the standard CTA tools, CORSIKA and…

Instrumentation and Methods for Astrophysics · Physics 2015-02-20 M. Szanecki , D. Sobczyńska , A. Niedźwiecki , J. Sitarek , W. Bednarek
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