Jul 12 – 23, 2021
Europe/Berlin timezone

Convolutional Neural Networks for Low Energy Gamma-Ray Air Shower Identification with HAWC

Jul 13, 2021, 12:00 PM
1h 30m


Talk GAI | Gamma Ray Indirect Discussion


Ian Watson (University of Seoul)


A major task in ground-based gamma-ray astrophysics analyses is to separate events caused by gamma rays from the overwhelming hadronic cosmic-ray background. In this talk we are interested in improving the gamma ray regime below 1 TeV, where the gamma and cosmic-ray separation becomes more difficult. Traditionally, the separation has been done in particle sampling arrays by selections on summary variables which distinguish features between the gamma and cosmic-ray air showers, though the distributions become more similar with lower energies. The structure of the HAWC observatory, however, makes it natural to interpret the charge deposition collected by the detectors as pixels in an image, which makes it an ideal case for the use of modern deep learning techniques, allowing for good performance classifers produced directly from low-level detector information.


Particle Identification; Deep Learning

Subcategory Experimental Methods & Instrumentation
Collaboration HAWC

Primary authors

Presentation materials