Physics
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....2..809s&link_type=abstract
Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I
Physics
Scientific paper
In May 2003 the new Altera r PLD family CycloneT M appears on the market. The new chip allows significantly simplifying the construction of the surface detector trigger as well as decreasing the total costs and improving parameters. In comparison with currently approved ACEX r chips, Cyclone chips contain much bigger internal memory (a possibility of implementation of slow memory inside the PLD chip or extension of fast buffers). 1.5 V supplies the core (reduction of power consumption). The single chip allows implementing interleaving DMA mode and avoiding problems with chips synchronization. The register performance indicated by compiler is on the level 130 MHz. Such a high internal speed allows increasing the sampling frequency, which could improve a time resolution of the trigger. More resources allow implementing new kind of triggers based up on Power Spectrum Density. MegaCore r library offers DSP routies as FFT, which may be useful to recognize type of events.
Pierre Auger Collaboration
Szadkowski Z.
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