Author/Authors :
Brouwer، نويسنده , , W. and Burris، نويسنده , , W.J and Caron، نويسنده , , Sharon B. and Hewlett، نويسنده , , J. and Holm، نويسنده , , L. and Hamilton، نويسنده , , A. and McDonald، نويسنده , , W.J and Pinfold، نويسنده , , J.L. and Price، نويسنده , , P. and Schaapman، نويسنده , , J.R. and Sibley، نويسنده , , L. and Soluk، نويسنده , , R.A and Wampler، نويسنده , , L.J.، نويسنده ,
Abstract :
Understanding the origin and propagation of high-energy cosmic rays is a fundamental area of astroparticle physics with major unanswered questions. The study of cosmic rays with energy more than 10 14 eV, probed only by ground-based experiments, has been restricted by the low particle flux. The Alberta Large-area Time-coincidence Array (ALTA) uses a sparse array of cosmic ray detection stations located in high schools across a large geographical area to search for non-random high-energy cosmic ray phenomena. Custom-built ALTA electronics is based on a modular board design. Its function is to control the detectors at each ALTA site allowing precise measurements of event timing and energy in the local detectors as well as time synchronization of all of the sites in the array using the global positioning system.
Keywords :
Cosmic rays , Extended air shower , Global positioning satellite system , Readout electronics , Large area array
