VERITAS Data Acquisition

Details VERITAS Data Acquisition VERITAS Data Acquisition

2007-10-11

arxiv.org/abs/0710.2288v1

Astronomy and Astrophysics

Astrophysics

4 pages; contribution to the 30th International Cosmic Ray Conference, Merida, Mexico, July 2007

Scientific paper

VERITAS employs a multi-stage data acquisition chain that extends from the VME readout of custom 500 MS/s flash ADC electronics to the construction of telescope events and ultimately the compilation of information from each telescope into array level data. These systems provide access to the programming of the channel level triggers and the FADCs. They also ensure the proper synchronization of event information across the array and provide the first level of data quality monitoring. Additionally, the data acquisition includes features to handle the readout of special trigger types and to monitor channel scaler rates. In this paper we describe the software and hardware components of the systems and the protocols used to communicate between the VME, telescope, and array levels. We also discuss the performance of the data acquisition for array operations.

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