Unattended mode monitoring of neutron coincidence data and high resolution gamma-ray spectra

Conference · Tue Jan 01 00:00:00 EST 1991 · Nuclear Materials Management. Annual Meeting Proceedings; (United States)

OSTI ID:5419138

Smith, B G.R.; Verrecchia, G P.D.; Ballette, G; Van Der Straat, F; Losito, A ^[1]

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1. Euratom Safeguards Directorate, Commission of the European Communities, Batiment CUBE, Plateau Du Kirchberg, L-2920 (LU)

In this paper two simple low cost flexible solutions are presented, one for the unattended acquisition of neutron coincidence data, the other for the unattended acquisition of gamma-ray spectra. The first solution consists of an inexpensive commercial data logging equipment attached to a neutron coincidence electronics for the unattended acquisition of passive neutron coincidence data. The data logger permits both the flexible configuration of a passive neutron coincidence measurement system for unattended mode monitoring and the storage of the measured totals and reals count rates. A customer software package permits the complete analysis of the stored data to provide an assay of each item passing through the measurement cavity. The analysis includes an input for different isotopic compositions, the calculation of the multiplication corrected reals rates, and the determination of {sup 240}PU{sub eff} masses. The software package for review includes displays of the totals and reals count rates logged by the data logger, the multiplication correct reals count rates and the measured {sup 240}PU{sub eff} masses, all as a function of time. The second solution consists of a simple low cost flexible software package controlling up to 4 multi-channel analyzer (MCA) cards for unattended spectrum acquisition.

• OSTI ID: 5419138
• Report Number(s): CONF-910774-; CODEN: NUMMB
• Journal Information: Nuclear Materials Management. Annual Meeting Proceedings; (United States), Vol. 20; Conference: 32. Institute of Nuclear Materials Management (INMM) annual meeting, New Orleans, LA (United States), 28-31 Jul 1991; ISSN 0362-0034
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
GAMMA SPECTRA
MONITORING
NEUTRONS
PLUTONIUM 240
MASS
CHEMICAL COMPOSITION
COINCIDENCE METHODS
COMPUTER CODES
COST
DATA ACQUISITION
ISOTOPES
USES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
COUNTING TECHNIQUES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
HADRONS
HEAVY NUCLEI
NUCLEI
NUCLEONS
PLUTONIUM ISOTOPES
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
YEARS LIVING RADIOISOTOPES
220100* - Nuclear Reactor Technology- Theory & Calculation