Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Flux monitoring
Patent
1983-07-20
1985-01-15
Canaialosi, Sal
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Flux monitoring
376259, G21C 1700
Patent
active
044938110
ABSTRACT:
A preamplifier for a wide range neutron flux monitoring system is disclosed. The preamplifier contains first to fifth amplifiers and a selection switch. The first amplifier for high frequency band amplification has a low input impedance circuit. The second amplifier for low frequency band amplification has a high input impedance circuit. Either of the first and second amplifiers can provide a path for the neutron flux level signal derived from a detector according to the frequency of the neutron flux level signal. The third amplifier (pulse amplifier) amplifies the output signal of the first amplifier and transfers the amplified signal to a pulse signal counting system. The lower frequency band Campbell signal is applied to the Campbelling system, through the second amplifier, the fourth amplifier (low frequency band Campbelling amplifier), and the selection switch. The higher frequency band Campbell signal is applied to the Campbelling system, through the first amplifier, the fifth amplifier (high frequency band Campbell amplifier), and the selection switch.
REFERENCES:
patent: 2982473 (1961-05-01), Goertzel
patent: 3246154 (1966-04-01), Harrison
patent: 3296440 (1967-01-01), Schultz et al.
patent: 3330954 (1967-07-01), Cox et al.
patent: 3931522 (1976-01-01), Rusch
patent: 4045282 (1977-08-01), Barbier
patent: 4186048 (1980-01-01), Thomas
Endo Yorimasa
Fukushima Toshiki
Itoh Toshiaki
Seki Eiji
Shirayama Shimpey
Canaialosi Sal
Tokyo Shibaura Denki Kabushiki Kaisha
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