Development of a 10-decade single-mode reactor flux monitoring system
Conventional wide-range neutron channels employ three optional modes to monitor the required flux range from source levels to full power (typically 10 or more decades). Difficult calibrations are necessary to provide a continuous output signal when such a system switches from counting mode in the source range to mean-square voltage mode in the midrange to dc current mode in the power range. In an ORNL proof-of-principle test, a method of extended range counting was implemented with a fission counter and conventional wide-band pulse processing electronics to provide a single-mode, monotonically increasing signal that spanned /approximately 10/ decades of neutron flux. Ongoing work includes design, fabrication, and testing of a comlpete neutron flux monitoring system suitable for advanced liquid metal reactor designs. 6 refs., 4 figs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 7073509
- Report Number(s):
- CONF-8806102-2; ON: DE88008376; TRN: 88-023696
- Resource Relation:
- Conference: Specialists' meeting on instrumentation and reactor core assessment, Cadarache, France, 7 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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