Performance of the electronics for the Sudbury Neutrino Observatory

Author

Beier, E.W. ; Cowen, D.F. ; Keener, P.T. ; Klein, J.R. ; Newcomer, F.M. ; McDonald, D.S. ; Neubauer, M. ; Van Berg, R. ; Van de Water, R.G. ; Wittich, P.

Author_Institution

Dept. of Phys. & Astron., Pennsylvania Univ., Philadelphia, PA, USA

Volume

2

fYear

1998

fDate

1998

Firstpage

872

Abstract

The Sudbury Neutrino Observatory (SNO) is a second generation solar neutrino water Cherenkov detector using 1000 tonnes of D₂O viewed by almost 10000 20 cm photomultiplier tubes. The observatory, located 6800 ´ below ground in INCO Ltd´s Creighton mine near Sudbury Ontario, recently began full time operation. The SNO electronics provides deadtimeless sub-ns time and 0.1-1000 photoelectrons (pe) of charge measurement. While the solar neutrino event rate is low, the electronics must handle backgrounds in excess of 1 kHz and bursts in excess of 1 MHz. The integrated trigger system handles multiple independent triggers via 10000:1 analog sums. The electronics use three full custom integrated circuits plus standard commercial chips. There are 14 different printed circuit boards mounted in custom crates and racks. The DAQ interface is VME compatible

Keywords

CMOS analogue integrated circuits; Cherenkov counters; application specific integrated circuits; cosmic ray apparatus; data acquisition; nuclear electronics; printed circuits; trigger circuits; DAQ interface; Sudbury Neutrino Observatory; charge measurement; custom crates; custom integrated circuits; deadtimeless sub-ns time; integrated trigger system; multiple independent triggers; photomultiplier tubes; printed circuit boards; racks; second generation solar neutrino water Cherenkov detector; solar neutrino event rate; standard commercial chips; Analog memory; Application specific integrated circuits; Charge measurement; Data acquisition; Detectors; Monitoring; Neutrino sources; Observatories; Optical amplifiers; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1998. Conference Record. 1998 IEEE

Conference_Location

Toronto, Ont.

ISSN

1082-3654

Print_ISBN

0-7803-5021-9

Type

conf

DOI

10.1109/NSSMIC.1998.774309

Filename

774309