DocumentCode :
462454
Title :
De-oscillating Preamplifier Signals through Digital Filtering Techniques
Author :
Zocca, F. ; Pullia, A.
Author_Institution :
Dept. of Phys., Milan Univ., Milano
Volume :
2
fYear :
2006
fDate :
Oct. 29 2006-Nov. 1 2006
Firstpage :
986
Lastpage :
989
Abstract :
We present a time-domain digital filtering technique able to eliminate the ringing of preamplifier signals. The preamplifier signal is sampled by an ADC and then processed by a digital filter, whose aim is to eliminate the ringing while minimizing the loss of high-frequency information. We developed such a filtering technique for the case of a charge-sensitive preamplifier for gamma-ray spectroscopy installed far away from the detector/FET cryogenic assembly. With such a setup a damped oscillation is caused by the long connection cable acting as a delay line along the feedback loop. We could completely eliminate the ringing in the output signals and maintain, at the same time, a large bandwidth and a high loop gain. Experimental results are shown.
Keywords :
digital filters; gamma-ray spectroscopy; preamplifiers; charge-sensitive preamplifier; de-oscillating preamplifier signals; detector/FET cryogenic assembly; feedback loop; gamma-ray spectroscopy; time-domain digital filtering technique; Cryogenics; Digital filters; FETs; Filtering; Gamma ray detection; Gamma ray detectors; Preamplifiers; Signal processing; Spectroscopy; Time domain analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
ISSN :
1095-7863
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2006.356011
Filename :
4179165
Link To Document :
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