Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes

Details Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes Distributed data acquisition system for Pachmarhi array of Cverenkov telescopes

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002basi...30..411u&link_type=abstract

Bulletin of the Astronomical Society of India, Vol.30, p. 411-416

Computer Science

Performance

2

Distributed Data Acquisition System, Atmospheric Cverenkov Technique, Distributed Cverenkov Telescopes, Pact

Scientific paper

Pachmarhi Array of Cverenkov Telescopes consists of 25 Telescopes distributed within an area of 8000m2. The array was designed to detect and process faint Cverenkov light flashes that lasts for a few nanoseconds, produced in the atmosphere by celestial VHE ?-rays or cosmic rays. In this experiment, the arrival time and amplitude of fast tiny pulses have to be measured and recorded from each of 175 photo-tubes in a shortest possible time. In view of the complexity of the system, the entire array is divided into 4 sectors. A Distributed Data Acquisition System developed for the purpose consists of independent Sector Data Acquisition Systems and a Master Data Acquisition System. The distributed data acquisition and monitoring system are built using PC's which are networked through LAN. The entire software for DDAS was developed in-house in C language under LINUX environment. Also, most of the hardware barring a few fast digitization modules were designed and fabricated in-house. The design features, implementation strategy as well as the performance of the whole system are discussed.

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