Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 482, Issue 1-2, Pages 457-474Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-9002(01)01517-0
Keywords
The High Resolution Fly's Eye Experiment; HiRes; cosmic ray detector; air fluorescence technique; FADC; DAQ; parallel processing
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This paper describes a data acquisition system for optical telescopes studying extensive air showers for the High Resolution Fly's Eye Project at Dugway Proving Grounds, Utah. The measurements are based entirely on flash-analog-to-digital conversion of phototube signals, digitized continuously at 10 MHz, and stored in a deep (820 mus) pipeline. for deadtimeless readout following a parallel pipeline trigger. The massive parallel processing by digital signal processors and programmable logic devices is distributed site-wide, with 42 telescopes and a central facility linked by optical fiber. The system was designed and built at Columbia University, Nevis Laboratories. (C) 2002 Elsevier Science B.V. All rights reserved.
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