Neutron and Gamma Spectrometry in the Research Reactor LR-0

The complex measurement system for the full-scale VVER models (mock-ups), created in the research reactor LR-0, is discussed. Fast neutron (energy from 0.5 to 10 MeV) and gamma spectra are measured in several representative points of the mock-ups by the two-parameter spectrometer with the cylindrica...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on nuclear science 2015-06, Vol.62 (3), p.1212-1217
Main Authors: Zaritskiy, S., Osmera, B., Cvachovec, F., Marik, M., Posta, S., Rypar, V., Riazanov, D., Lichadeev, V., Kolros, A., Matej, Z.
Format: Article
Language:English
Subjects:
3{\rm He} chamber
activation method
Detectors
Energy measurement
Inductors
LR-0 reactor
Monitoring
neutron and gamma spectra
Neutrons
Photonics
power distribution
power monitoring
spectrometry
stilbene
Velocity measurement
VVER mock-up
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The complex measurement system for the full-scale VVER models (mock-ups), created in the research reactor LR-0, is discussed. Fast neutron (energy from 0.5 to 10 MeV) and gamma spectra are measured in several representative points of the mock-ups by the two-parameter spectrometer with the cylindrical stilbene scintillation detectors. Measurements in the thermal and epithermal neutron region are carried out with the activation method using a broad set of activation monitors and with the 3 He(n,p) counter. Activation measurements with threshold fast neutron detectors enlarge also the proton-recoil spectra measurements, such activation measurements are carried out especially in cases, when a spectrometer cannot be put in the necessary position. The core fission rate distribution is obtained by means of gamma-scanning of the fuel pins. The low noise precise power (flux density) monitoring system, independent of the operation control system, was developed in the LR-0 reactor for mock-up experiments.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2015.2429747