Absolute Subcriticality Measurement Without Calibration and Detection Efficiency Dependence by the 252Cf Source-Driven Noise Method
Conference
·
OSTI ID:6079936
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
The 252Cf-source-driven noise analysis method determines the subcriticality of a system containing fissionable material from the ratio of cross power spectral densities between the detectors that detect particles from the fission process and between these detectors and an ionization chamber containing a spontaneously fissioning neutron source which provides neutrons to induce fission in the system. This method has two advantages: (a) a calibration is not required and thus subcriticality can be determined from measurements only on the subcritical system of interest, and (b) the subcriticality is independent of the type of detector or its efficiency. These properties of this technique are illustrated by measurements.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6079936
- Report Number(s):
- CONF-841007-47; ON: DE85005373
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIBRATION
FISSION
Fast Flux Test Facility Reactor (FFTR)
Fissionable Material
Fuel Pins
GRAPHS
Ionization Chamber
Light Water Reactor (LWR)
MEASURING METHODS
NUCLEAR REACTIONS
Neutron Source
Nuclear Criticality Safety Program (NCSP)
REACTOR NOISE
SUBCRITICALITY
TABLES
220100* -- Nuclear Reactor Technology-- Theory & Calculation
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIBRATION
FISSION
Fast Flux Test Facility Reactor (FFTR)
Fissionable Material
Fuel Pins
GRAPHS
Ionization Chamber
Light Water Reactor (LWR)
MEASURING METHODS
NUCLEAR REACTIONS
Neutron Source
Nuclear Criticality Safety Program (NCSP)
REACTOR NOISE
SUBCRITICALITY
TABLES