Multichannel analyzer with `optimum´ digital pulse processing

Author

Aliprandi, B. ; Benzoni, M. ; Fazzi, A. ; Savazzi, M. ; Varoli, V.

Author_Institution

Dept. of Nucl. Eng., Politecnico di Milano, Italy

fYear

1997

fDate

9-15 Nov 1997

Firstpage

150

Abstract

A complete digital spectroscopy system supporting the `optimum´ filtering has been designed, built and tested. The optimum filtering has proven to be the best processing algorithm with respect to the achievable energy resolution. We have succeeded in implementing the full system in a PC: a dedicated board for the data acquisition and the CPU of the PC itself for the digital processing. The processing code is written in C-language and focused on reducing the execution time so that a throughput of 1000 cps is reached with a Pentium 100 MHz processing 12 samples for each pulse. After the optimization of the code, the processing time increases linearly with the number of sample per pulse while the algorithm is quadratic. A large class of high resolution and medium rate applications can fruitfully take advantage of this `optimum´ digital spectrometer

Keywords

data acquisition; microcomputer applications; nuclear electronics; pulse height analysers; spectroscopy computing; C-language; achievable energy resolution; data acquisition; digital processing; digital spectrometer; multichannel analyzer; optimum digital pulse processing; optimum filtering; Amplitude estimation; Curve fitting; Digital filters; Energy resolution; Filtering; Noise shaping; Sampling methods; Shape; Spectroscopy; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

Conference_Location

Albuquerque, NM

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.672556

Filename

672556