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Stability and behavior of the outer array of small water Cherenkov detectors, outriggers, in the HAWC observatory

The High-Altitude Water Cherenkov (HAWC) Observatory is used for detecting TeV gamma rays. HAWC is operating at 4,100 meters above level sea on the slope of the Sierra Negra Volcano in the State of Puebla, Mexico, and consists of an array…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 T. Capistrán , I. Torres , E. Moreno

HAWC High Energy Upgrade with a Sparse Outrigger Array

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory consists of 300 water Cherenkov detectors and has been fully operational since March 2015 in central Mexico. It detects cosmic- and gamma-ray showers in the TeV energy range.…

Instrumentation and Methods for Astrophysics · Physics 2017-08-15 Vikas Joshi , Armelle Jardin-Blicq

Detector Considerations for a HAWC Southern Observatory

The High-Altitude Water Cherenkov (HAWC) observatory in central Mexico is currently the world's only synoptic survey instrument for gamma rays above 1 TeV. Because there is significant interest in covering the full TeV sky with a survey…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Michael DuVernois

Studies of the Time Structure of Extended Air Showers for Direction Reconstruction with the HAWC Outrigger Array

The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is a ground-based air shower array designed to detect Cherenkov light produced in water by secondary particles from atmospheric air showers. In order to improve the sensitivity…

High Energy Astrophysical Phenomena · Physics 2019-09-02 Dezhi Huang

Layout design studies for medium-sized telescopes within the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is an international project for a next-generation ground-based gamma-ray observatory. CTA, conceived as an array of tens of imaging atmospheric Cherenkov telescopes, comprising small, medium and…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 T. Hassan , B. Humensky , D. Nieto , M. Wood

Layered water Cherenkov detector for the study of ultra high energy cosmic rays

We present a new design for the water Cherenkov detectors that are in use in various cosmic ray observatories. This novel design can provide a significant improvement in the independent measurement of the muonic and electromagnetic…

Instrumentation and Methods for Astrophysics · Physics 2015-06-19 Antoine Letessier-Selvon , Pierre Billoir , Miguel Blanco , Ioana C. Maris , Mariangela Settimo

Performance of the first prototype of the HAWC Gamma Ray Observatory

The HAWC gamma ray observatory, to be constructed at Sierra Negra, Puebla in Mexico, is a large array of water Cherenkov detectors sited at an elevation of 4100 m, which has been optimized for gamma/hadron discrimination of the primary…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Andres Sandoval , Ruben Alfaro , Ernesto Belmont , Varlen Grabski , Alejandro Renteria , Alejandro R. Vasques , Omar Vazquez , M. Magdalena Gonzalez , Alberto Carramiñana , Cesar Alvarez

Status of the Schwarzchild-Couder Medium-Sized Telescope for the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is planned to be the next-generation very-high-energy (VHE; E > 100 GeV) gamma-ray observatory. It is anticipated that CTA will improve upon the sensitivity of the current generation of VHE experiments,…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 W. Benbow , A. N. Otte

Performance Studies of Layered Water Cherenkov Detectors

Next-generation air-shower detectors, such as the Global Cosmic Ray Observatory (GCOS) and the Probing Extreme PeVatron Sources (PEPS) experiment, are considering water-Cherenkov detectors as a base design. A key factor in improving the…

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HAWC: Design, Operation, Reconstruction and Analysis

The High-Altitude Water Cherenkov (HAWC) Observatory was completed and began full opera- tion on March 20, 2015. The detector consists of an array of 300 water tanks, each containing 200 ktons of purified water and instrumented with 4 PMTs.…

Instrumentation and Methods for Astrophysics · Physics 2019-08-13 Andrew J. Smith

Expected performance of the GAW Cherenkov Telescopes Array. Simulation and Analysis

GAW is a "path-finder" experiment to test the feasibility of a new generation of Imaging Atmospheric Cherenkov telescopes that join high flux sensitivity with large field of view capability using Fresnel lens, stereoscopic observational…

Astrophysics · Physics 2007-07-31 M. C. Maccarone , P. Assis , O. Catalano , G. Cusumano , M. C. Espirito Santo , P. Goncalves , M. Moles , M. Pimenta , A. Pina , B. Sacco , B. Tome'

Detection of two TeV gamma-ray outbursts from NGC 1275 by LHAASO

The Water Cherenkov Detector Array (WCDA) is one of the components of Large High Altitude Air Shower Observatory (LHAASO) and can monitor any sources over two-thirds of the sky for up to 7 hours per day with >98\% duty cycle. In this work,…

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HAWC Upgrade with a Sparse Outrigger Array

The High Altitude Water Cherenkov (HAWC) high-energy gamma-ray observatory has recently been completed on the slopes of the Sierra Negra volcano in central Mexico. HAWC consists of 300 Water Cherenkov Detectors, each containing 180 m$^3$ of…

Instrumentation and Methods for Astrophysics · Physics 2015-09-16 A. Sandoval

A prototype tank for the SWGO detector

The Southern Wide-field Gamma-ray Observatory (SWGO) is an international collaboration working on realizing a next-generation observatory located in the Southern hemisphere, which offers a privileged view of our galactic center. We are…

Instrumentation and Methods for Astrophysics · Physics 2023-01-09 Sofia Grusovin , Giovanni Consolati , Alessandro de Angelis , Cornelia Arcaro , Francesca Bisconti , Andrea Chiavassa , Michele Doro , Fausto Guarino , Mos\e' Mariotti , Elisa Prandini

A Prototype for the Cherenkov Telescope Array Pipelines Framework: Modular Efficiency Simple System (MESS)

The Cherenkov Telescope Array (CTA) is a ground-based $\gamma$-ray observatory that will observe the full sky in the energy range from 20 GeV to 100 TeV from facilities in both hemispheres. It is proposed to consist of more than 100…

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VAMOS: a Pathfinder for the HAWC Gamma-Ray Observatory

VAMOS was a prototype detector built in 2011 at an altitude of 4100m a.s.l. in the state of Puebla, Mexico. The aim of VAMOS was to finalize the design, construction techniques and data acquisition system of the HAWC observatory. HAWC is an…

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A Condition Monitoring Concept Studied at the MST Prototype for the Cherenkov Telescope Array

The Cherenkov Telescope Array (CTA) is a future ground-based gamma-ray observatory that will provide unprecedented sensitivity and angular resolution for the detection of gamma rays with energies above a few tens of GeV. In comparison to…

Instrumentation and Methods for Astrophysics · Physics 2019-08-07 Victor Barbosa Martins , Markus Garczarczyk , Gerrit Spengler , Ullrich Schwanke

Advanced analysis and event reconstruction for the CTA Observatory

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

Pointing Calibration for the Cherenkov Telescope Array Medium Size Telescope Prototype

Pointing calibration is an offline correction applied in order to obtain the true pointing direction of a telescope. The Cherenkov Telescope Array (CTA) aims to have the precision to determine the position of point-like as well as slightly…

Instrumentation and Methods for Astrophysics · Physics 2019-08-14 Louise Oakes , Bagmeet Behera , Juergen Baehr , Sandra Gruenewald , Tobias Raeck , Stefan Schlenstedt , Anja Schubert , Ullrich Schwanke

Status of the Davies-Cotton and Schwarzschild-Couder Medium-Sized Telescopes for the Cherenkov Telescope Array

The Cherenkov Telescope Array is an observatory dedicated to very high energy gamma rays with unprecedented sensitivity between 20 GeV and 300 TeV to be installed on two sites: Canary Island La Palma and Paranal Chile. Three telescope sizes…

Instrumentation and Methods for Astrophysics · Physics 2019-07-22 J-F. Glicenstein