Preliminary Cosmic Ray Results from the HAWC's Eye Telescopes

Rehbein, Florian; Alfaro, R.; Audehm, Jan; Bretz, T.; Chaparro-Amaro, Oscar; Do, Giang; González, Francisco; González, M. M.; Iriarte, A.; Martínez-Castro, J.; Martinez-Felipe, Miguel; Maslowski, Frank; Perez-Araujo, Yunior Frainen; Schaufel, Merlin; Serna-Franco, José; Tischbein, Franziska; Torres, I.

doi:10.22323/1.395.0397

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…The same method can be used for further measurements of other primaries [52]. Results from a similar study using the HAWC's Eye telescopes, right panel of Figure 1, was presented on behalf of the HAWC collaboration [53].…”

Section: Cr Energy Spectrum and Mass Compositionmentioning

confidence: 99%

Cosmic Ray Indirect Rapporteur Report (37th ICRC )

Abu‐Zayyad¹

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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This report summarizes the physics results presented as part of the cosmic-ray indirect (CRI) session of the 37 th ICRC conference. Updated measurements on cosmic-ray energy spectrum, mass composition, and arrival direction distributions were presented by several collaborations, spanning the energy range of a few TeV up to the highest observed energies. We select some of the results which were highlighted by the respective discussion leaders or which presented new results at this conference. Results on atmospheric phenomena, including TGFs and thunderstorms are also presented. We see a few interesting trends in the presented data. Among these are, the increased use of IACT's to study cosmic-rays among experiments primarily intended for gamma-ray measurements. Another, is the continued development of radio detection of air showers. Multi-component detectors are becoming the preferred detection mode, as the knowledge of how to integrate the different information about an air shower collected by the different detector components improves. The main physics questions about the origins of cosmic rays, both galactic and extra-galactic, remain open. Increased statistics and improved analyses allow for refining and better constraining theoretical models, but no definitive answers can be claimed thus far. Looking forward, the field is moving at a rapid pace; Several detectors upgrades are underway, data is continually coming in and analyzed, old data being made public for a wider audience and a new generation of scientists to examine, with new tools and approaches that will hopefully result in new insights to help solve the open questions on cosmic-rays.

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Section: Cr Energy Spectrum and Mass Compositionmentioning

confidence: 99%

Cosmic Ray Indirect Rapporteur Report (37th ICRC )

Abu‐Zayyad¹

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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“…We use GEANT4 Agostinelli et al [16] within a simulation framework adapted from that of the HAWC collaboration, to simulate the WCD response to the secondary air shower particles from 20 m above the detector unit. This simulation framework, called HAWCSim, has been extensively used for studies related to HAWC and has been verified by the HAWC Collaboration Ahron S. Barbera and Springer [17], Abeysekara and et al [18], Rehbein and et al [19]. The UNIFIED Levin and Moisan [20] model in GEANT4 is adapted to describe the reflectivity of materials with a rough surface such as Tyvek (high reflectivity -92% at 450 nm, which from now on we refer to as 'white') Nozka et al [21] as used by the Pierre Auger Observatory Allekotte et al [22] and Polypropylene (low reflectivity -10% at 450 nm, from now on referred to as 'black') as used by HAWC.…”

Section: Overview Of Simulation Toolsmentioning

confidence: 99%

Optimization Studies of a Water Cherenkov Detector for Gamma-ray Astronomy

Kunwar

Schoorlemmer

Hinton

2019

Proceedings of 36th International Cosmic Ray Conference — PoS(ICRC2019)

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Ground-based, wide field of view instrumentation in gamma-ray astronomy is currently limited to the northern hemisphere and hence, lacks sensitivity to our Galactic Center and the rest of the southern sky. A Southern Gamma Observatory comprising an array of ground-level detector units with a high fill factor (> 70 %) at high altitude (> 4 km) could be used to observe the southern sky. Water Cherenkov Detectors (WCDs) have shown their potential as detector units for such an array. Detailed simulations are needed to understand the response of WCDs to the flux of secondary particles impinging on them. In this contribution, we study the complete simulation chain from the air shower simulation with CORSIKA to the detector level simulation with GEANT4, in an attempt to optimize WCDs.

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Preliminary Cosmic Ray Results from the HAWC's Eye Telescopes

Cited by 2 publications

References 6 publications

Cosmic Ray Indirect Rapporteur Report (37th ICRC )

Cosmic Ray Indirect Rapporteur Report (37th ICRC )

Optimization Studies of a Water Cherenkov Detector for Gamma-ray Astronomy

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