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JAEA Reports

None

JNC-TN1400 2000-001, 371 Pages, 2000/01

JNC-TN1400-2000-001.pdf:12.26MB

no abstracts in English

JAEA Reports

Effective multiplication factor measurement by Feynman-$alpha method (3)

Mori, Tomoaki;

PNC-TN9410 98-056, 72 Pages, 1998/06

PNC-TN9410-98-056.pdf:1.98MB

The sub-criticality monitoring system has been developed for criticality safety control in nuclear fuel handling plants. In the past experiments performed with the Deuterium Critical Assembly(DCA), it was confirmed that the detection of sub-criticality was possible to k$$_{eff}$$=0.3. To investigate the applicability of the method to more generalized system, experiments were performed in the light-water-moderated system of the modified DCA core. From these experiments, it was confirmed that the prompt decay constant($$alpha$$), which was a index of the sub-criticality, was detected between k$$_{eff}$$=0.623 and k$$_{eff}$$ 0.870 and the difference of 0.05$$sim$$0.1$$Delta$$k could be distinguished. The $$alpha$$ values were numerically calculated with 2D transport code TWODANT and monte carlo code KENO V.a, and the results were compared with the measured values. The differences between calculated and measured values were proved to be less than 13%, which was sufficient accuracy in the sub-criticality monitoring system. It was confirmed that Feynman-$$alpha$$ method was applicable to sub-critical measurement of the light-water-moderated system.

JAEA Reports

None

PNC-TN1410 97-043, 167 Pages, 1997/11

PNC-TN1410-97-043.pdf:7.22MB

no abstracts in English

JAEA Reports

None

; ; Shobu, Nobuhiro; ;

PNC-TN9700 95-001, 804 Pages, 1995/08

PNC-TN9700-95-001.pdf:30.97MB

no abstracts in English

Oral presentation

On-line measurement of subcriticality using pulsed spallation neutron source method

Iwamoto, Hiroki; Nishihara, Kenji; Yagi, Takahiro*; Pyeon, C. H.*

no journal, , 

no abstracts in English

Oral presentation

Minimum value of the $$alpha$$-mode eigenvalue of an accelerator driven system

Katano, Ryota

no journal, , 

no abstracts in English

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