NDLI: NANA-an integrated signal processor and record builder for the level-2 readout of asynchronous event-filtering digital pipelines

Content Provider	IEEE Xplore Digital Library
Author	Gomes, P. Mota, M. Christiansen, J.
Copyright Year	1994
Description	Author affiliation: LIP, Lisbon, Portugal (Gomes, P.; Mota, M.)
Abstract	NANA implements some fast and simple processing algorithms, for use in future high energy physics experiments. After the first level trigger, the data rate is sufficiently small to allow channel merging and some processing with dedicated hardware. For detectors whose signal is compacted prior to digitization, the data samples need to be expanded to the original dynamic range, as further physics analysis usually deals with linear values. A 16-bit integer piece-wise polynomial approximation of the expansion function recovers the original dynamic range, without introducing significant degradation on the detector's intrinsic resolution. A 16-bit integer multiplier and adder-accumulator is accurate enough for time information extraction and for determination of the energy deposited in one channel. The time resolution is sufficient to correctly identify the bunch crossing that corresponds to a particular pulse. The energy accuracy is limited only by the detector's resolution. The extracted features carry all the information subsequently needed. The whole set of samples of a pulse can thus be replaced by a few data words. Initially aimed at the calorimetry front-end, the algorithms may be applied to any similar sampled detector signal.
Starting Page	610
Ending Page	614
File Size	581721
Page Count	5
File Format	PDF
ISBN	0780325443
DOI	10.1109/NSSMIC.1994.474531
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-10-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal processing Energy resolution Signal processing algorithms Detectors Signal detection Dynamic range Signal resolution Data mining Merging Hardware
Content Type	Text
Resource Type	Article

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