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Third Level Trigger for the Fluorescence Telescopes of the Pierre Auger Observatory | A. Schmidt
; T. Asch
; H. Gemmeke
; M. Kleifges
; H.-J. Mathes
; A. Menchikov
; F. Schüssler
; D. Tcherniakhovski
; | Date: |
28 Jul 2008 | Abstract: | The trigger system for the Auger fluorescence telescopes is implemented in
hard- and software for an efficient selection of fluorescence light tracks
induced by high-energy extensive air showers. The algorithm of the third stage
uses the multiplicity signal of the hardware for fast rejection of lightning
events with above 99% efficiency. In a second step direct muon hits in the
camera and random triggers are rejected by analyzing the space-time correlation
of the pixels. The trigger algorithm was tested with measured and simulated
showers and implemented in the electronics of the fluorescence telescopes. A
comparison to a prototype trigger without multiplicity shows the superiority of
this approach, e.g. the false rejection rate is a factor 10 lower. | Source: | arXiv, 0807.4421 | Services: | Forum | Review | PDF | Favorites |
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