Published 1986 | Version v1
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The increase of the subthermal neutron flux by using a cold neutron source at the FRG-1

Creators

  • 1. GKSS-Forschungszentrum Geesthacht G.m.b.H., Geesthacht-Tesperhude (Germany, F.R.). Inst. fuer Physik

Description

The increase of the subthermal neutron flux (wavelength range 4-6 A by a cold neutron source (CNS) at a radial beam tube of the FRG-1 reactor is investigated in combination with different reflectors (H2O, C, Be, D2O). Advantage factors on the basis of the directed neutron flux, resulting from the use of the CNS, are calculated for various configurations. In addition, the influence of different scattering models (gas, Koppel/Young) for the CNS, group structure, and structural materials are described. Finally, the CNS assembly which is going to be installed at the FRG-1 is treated in detail. For the calculations the transport code NEUTRA and the spectral code GGC-4 are used. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Zur Erhoehung des Neutronenflusses im Wellenlaengenbereich 4-6 A an einem radialen Strahlrohr des FRG-1 wird die Wirkung einer kalten Neutronenquelle (CNS) zusammen mit verschiedenen Reflektoren (H2O, C, Be, D2O) untersucht. Es werden Vorteilsfaktoren auf der Basis des gerichteten Neutronenflusses, wie sie sich durch Verwendung des CNS ergeben, fuer verschiedene Konfigurationen angegeben. Dabei wird auf die Einfluesse einzelner Modellparameter eingegangen (Streukern nach Gasmodell bzw. nach Koppel/Young, Gruppenstruktur, Strukturmaterial). Schliesslich wird die am FRG-1 zu installierende CNS-Konfiguration im Detail behandelt. Die eingesetzten Programme sind der Transportcode NEUTRA und das Spektralprogramm GGC-4. (orig.)

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Additional details

Additional titles

Subtitle (English)
Final report

Publishing Information

Imprint Pagination
38 p.
Report number
GKSS--86/E/9

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
17062904
Subject category
S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S22: GENERAL STUDIES OF NUCLEAR REACTORS;
Descriptors DEI
COLD NEUTRONS; CONFIGURATION; CONSTRUCTION; EXPERIMENTAL CHANNELS; FRG-1 REACTOR; IN PILE LOOPS; NEUTRON FLUX; NEUTRON GUIDES; NEUTRON REFLECTORS; NEUTRON SOURCES; NEUTRON TRANSPORT THEORY; THERMAL NEUTRONS
Descriptors DEC
BARYONS; ELEMENTARY PARTICLES; ENRICHED URANIUM REACTORS; FERMIONS; HADRONS; NEUTRONS; NUCLEONS; PARTICLE SOURCES; POOL TYPE REACTORS; RADIATION FLUX; RADIATION SOURCES; REACTOR CHANNELS; REACTOR COMPONENTS; REACTOR EXPERIMENTAL FACILITIE; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; TEST FACILITIES; TEST REACTORS; THERMAL REACTORS; TRAINING REACTORS; TRANSPORT THEORY; WATER COOLED REACTORS; WATER MODERATED REACTORS

Optional Information

Notes
With 23 figs., 6 tabs.