Gamma compensated pulsed ionization chamber wide range neutron/reactor power measurement system
Patent
·
OSTI ID:4144089
An improved method and system of pulsed mode operation of ionization chambers is described in which a single sensor system with gamma compensation is provided by sampling, squaring, automatic gate selector, and differential amplifier circuit means, employed in relation to chambers sensitized to neutron plus gamma and gamma only to subtract out the gamma component, wherein squaring functions circuits, a supplemental high performance pulse rate system, and operational and display mode selection and sampling gate circuits are utilized to provide automatic wide range linear measurement capability for neutron flux and reactor power. Neon is employed as an additive in the ionization chambers to provide independence of ionized gas kinetics temperature effects, and the pulsed mode of operation provide independence of high temperature insulator leakage effects. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-000692
- Assignee:
- to Secretary of the Navy
- Patent Number(s):
- US 3873840
- OSTI ID:
- 4144089
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*IONIZATION CHAMBERS-- DESIGN
*NEUTRON DETECTION-- IONIZATION CHAMBERS
*REACTIVITY METERS-- DESIGN
440101* --Instrumentation--Radiation Instrumentation-- General Detectors & Monitors
BACKGROUND RADIATION
COUNTING CIRCUITS
GAMMA RADIATION
IN CORE INSTRUMENTS
N46110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors
N79400 --Reactors--Reactor Control Systems
PARTICLE DISCRIMINATION
*NEUTRON DETECTION-- IONIZATION CHAMBERS
*REACTIVITY METERS-- DESIGN
440101* --Instrumentation--Radiation Instrumentation-- General Detectors & Monitors
BACKGROUND RADIATION
COUNTING CIRCUITS
GAMMA RADIATION
IN CORE INSTRUMENTS
N46110* --Instrumentation--Radiation Detection Instruments-- General Detectors & Monitors
N79400 --Reactors--Reactor Control Systems
PARTICLE DISCRIMINATION