Studies of the time structure of extended air showers for direction reconstruction with the HAWC outrigger array

Authors

Dezhi Huang, Michigan Technological UniversityFollow

Document Type

Conference Proceeding

Publication Date

2019

Department

Department of Physics

Abstract

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 at the highest energies, especially for the shower cores falling outside the main array, 345 smaller Water Cherenkov Detectors (WCDs) were installed around the main array, the outrigger array. This extension increased the instrumented area of HAWC by a factor of four. With the increased size of the array, and the ability to detect shower particles further away from the core, understanding of the time structure of the shower front is crucial for accurate direction reconstruction and mandates proper modeling. In this contribution, we present a model of the shower front as expected to be observed by the outriggers obtained from Monte-Carlo simulations. Applying this model to shower reconstruction, the improvements on air shower parameter are studied.

Publisher's Statement

Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. Publisher’s version of record: https://pos.sissa.it/358/700/

Publication Title

Proceedings of Science

Recommended Citation

Huang, D. (2019). Studies of the time structure of extended air showers for direction reconstruction with the HAWC outrigger array. Proceedings of Science, 358.
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/782

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

Version

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