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July 29, 2015 to August 6, 2015
World Forum
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Long-term scaler and histogram analysis

Aug 4, 2015, 4:00 PM
Theater Foyer (World Forum)

Theater Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 31
Poster contribution SH-EX Poster 3 SH


Sergio Dasso (IAFE - CONICET - UBA)


The low energy modes of the Surface Detector array of the Pierre Auger Observatory record variations in the flux of low energy secondary particles with extreme detail. In these modes, the rate of signals above a very low threshold (scalers) and the calibration charge histograms of the individual pulses detected by each water-Cherenkov detector are used. Previous work has studied the flux of galactic cosmic rays on short and intermediate time scales (i.e. from minutes to weeks) using these low energy modes. In this work, after including a long-term correction to the response of the detectors, we present the first long-term analysis of the flux of cosmic rays using scalers and the callibration histograms. We show its sensitivity to the solar cycle variation and its relation to the solar modulation of cosmic rays for a 9-year period of the last solar cycle.
Registration number following "ICRC2015-I/" 713
Collaboration Pierre Auger

Primary author

Jimmy J. Masías-Meza (Universidad de Buenos Aires)


Sergio Dasso (IAFE - CONICET - UBA)

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