Self-Powered Neutron and Gamma Detectors for In-Core Measurements
Description
The performance of various types of self-powered neutron and gamma detectors intended for control and power distribution measurements in water cooled reactors is discussed. The self-powered detectors are compared with other types of in-core detectors and attention is paid to such properties as neutron and gamma sensitivity, high-temperature performance, burn-up rate and time of response. Also treated are the advantages and disadvantages of using gamma detector data for power distribution calculations instead of data from neutron detectors. With regard to neutron-sensitive detectors, results from several long-term experiments with vanadium and cobalt detectors are presented. The results include reliability and stability data for these two detector types and the Co build-up in cobalt detectors. Experimental results which reveal the fast response of cobalt detectors are presented, and the use of cobalt detectors in reactor safety systems is discussed. Experience of the design and installation of complete flux probes, electronic units and data processing systems for power reactors is reported. The investigation of gamma-sensitive detectors includes detectors with emitters of lead, zirconium, magnesium and Inconel. Measured gamma sensitivities from calibrations both in a reactor and in a gamma cell are given, and the signal levels of self-powered neutron and gamma detectors when applied to power reactors are compared
Availability note (English)
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39015035.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 20 p.
- Report number
- AE--440
INIS
- Country of Publication
- Sweden
- Country of Input or Organization
- Sweden
- INIS RN
- 39015035
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Quality check status
- Yes
- Descriptors DEI
- IN CORE INSTRUMENTS; PERFORMANCE; RELIABILITY; SELF-POWERED GAMMA DETECTORS; SELF-POWERED NEUTRON DETECTORS; WATER COOLED REACTORS;
- Descriptors DEC
- MEASURING INSTRUMENTS; NEUTRON DETECTORS; RADIATION DETECTORS; REACTOR INSTRUMENTATION; REACTORS; SELF-POWERED DETECTORS;
Optional Information
- Notes
- 12 refs., 4 figs., 2 tabs.