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FADC Pulse Reconstruction Using a Digital Filter for the MAGIC Telescope

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arxiv astro-ph/0506459 v1 pith:3ROF4OAO submitted 2005-06-20 astro-ph

FADC Pulse Reconstruction Using a Digital Filter for the MAGIC Telescope

classification astro-ph
keywords fadcdigitalpulsefiltermagicreconstructionsamplessignal
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Presently, the MAGIC telescope uses a 300 MHz FADC system to sample the transmitted and shaped signals from the captured Cherenkov light of air showers. We describe a method of Digital Filtering of the FADC samples to extract the charge and the arrival time of the signal: Since the pulse shape is dominated by the electronic pulse shaper, a numerical fit can be applied to the FADC samples taking the noise autocorrelation into account. The achievable performance of the digital filter is presented and compared to other signal reconstruction algorithms.

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