Signal polarity inverting multiplexing circuits for nuclear...

Details Signal polarity inverting multiplexing circuits for nuclear... Signal polarity inverting multiplexing circuits for nuclear...

2007-05-21

2009-02-24

Porta, David P (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

Reexamination Certificate

active

07495222

ABSTRACT:
A system for multiplexing photodetector signals from a scintillation detector. The system includes a detector module having a number of scintillator blocks, each scintillator block having a number of photosensors, and a number of multiplexing circuits. Each multiplexing circuit includes a number of inputs, a signal polarity inverter and at least one differential output attached to the signal polarity inverter. The multiplexing system inverts the polarity of preselected signals from the photosensors and selectively combines signals of different polarities to calculate event positioning and total energy.

REFERENCES:
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patent: 5880689 (1999-03-01), Kushner
patent: 2001/0040219 (2001-11-01), Cherry et al.
N. Zhang et al., “Anode position and last dynode timing circuits for dual-layer BGO scintillator with PS-PMT based modular detector”, Oct. 2002, IEEE Transactions on nuclear science, vol. 49, No. 5, , pp. 2203-2207.

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