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Gamma/Hadron Separation with the HAWC Observatory
- Source :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Publication Year :
- 2022
-
Abstract
- The High Altitude Water Cherenkov (HAWC) gamma-ray observatory observes atmospheric showers produced by incident gamma rays and cosmic rays with energy from 300 GeV to more than 100 TeV. A crucial phase in analyzing gamma-ray sources using ground-based gamma-ray detectors like HAWC is to identify the showers produced by gamma rays or hadrons. The HAWC observatory records roughly 25,000 events per second, with hadrons representing the vast majority ($>99.9\%$) of these events. The standard gamma/hadron separation technique in HAWC uses a simple rectangular cut involving only two parameters. This work describes the implementation of more sophisticated gamma/hadron separation techniques, via machine learning methods (boosted decision trees and neural networks), and summarizes the resulting improvements in gamma/hadron separation obtained in HAWC.<br />35 pages, 9 figures, published in Nuclear Instruments and Methods in Physics Research Section A
- Subjects :
- HAWC - Abteilung Hinton
High Energy Astrophysical Phenomena (astro-ph.HE)
Nuclear and High Energy Physics
Physics - Instrumentation and Detectors
Astrophysics::High Energy Astrophysical Phenomena
FOS: Physical sciences
Instrumentation and Detectors (physics.ins-det)
High Energy Physics - Experiment
High Energy Physics - Experiment (hep-ex)
High Energy Physics::Experiment
Astrophysics - High Energy Astrophysical Phenomena
Astrophysics - Instrumentation and Methods for Astrophysics
Instrumentation and Methods for Astrophysics (astro-ph.IM)
Instrumentation
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- Accession number :
- edsair.doi.dedup.....0f47f92a5f9d86e2623d1d33f1771439