Development of a FADC Data Acquisition System for Cosmic Ray Detection at 1018 eV

Abstract:

In the past few years, several proposals have been made to extend the stereo air fluorescence technique of ultrahigh energy cosmic ray observation to the energy range between£ § and£ § eV [1]. To accommodate such observations, we have designed and partially implemented a fully digital readout system for an air fluorescence telescope. In its current form, the readout system, which has been tested at Columbia University Nevis Laboratories, contains three basic components: a subcluster of sixteen Photonis XP3062 photomultipliers; an “FADC module,” which is simply a printed circuit board responsible for digitizing the PMT outputs and making basic trigger decisions; and a compact PCI board that handles two-way communication between the FADC electronics and a data acquisition PC. The phototube outputs are digitized at a high rate (§ MHz) to observe relatively close air showers at the low end of the desired energy range.

Año de publicación:

2005

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Fuente:

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