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The Calibration System of the HAWC Gamma-Ray Observatory

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arxiv 1508.04312 v1 pith:YGYJZJBK submitted 2015-08-18 astro-ph.IM astro-ph.HE

classification astro-ph.IMastro-ph.HE
keywords hawccalibrationsystemdetectorgamma-raylightobservatoryrange
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The HAWC collaboration has recently completed the construction of a gamma-ray observatory at an altitude of 4100 meters on the slope of the Sierra Negra volcano in the state of Puebla, Mexico. In order to achieve an optimal angular resolution, energy reconstruction, and cosmic-ray background suppression for the air showers observed by HAWC, it is crucial to obtain good timing and charge calibrations of the photosensors in the detector. The HAWC calibration is based on a laser system which is able to deliver short light pulses to all the tanks in the array. The light intensity can range over 7 orders of magnitude, broad enough to cover all the dynamic range of the PMT readout electronics. In this contribution we will present the HAWC calibration system, together with the methods used to calibrate the detector.

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  1. Latest news from the HAWC outrigger array

    astro-ph.IM 2019-08 conditional novelty 4.0 of 10

    The HAWC outrigger array is fully deployed and stable, and is expected to improve core reconstruction and effective area for TeV to 100 TeV gamma rays, though the reconstruction upgrade is still pending.

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