Neutron spectrum from the renewed cold neutron source in JRR-3 and expectation for the future upgrade project

Kaneko, Koji ; Metoki, Naoto ; Hazawa, Tomoya; Nagahori, Kazuhisa; Nakamura, Kiyoshi

The neutron flux and energy spectrum from the renewed cold neutron source was measured at the C2-1 beam port in the guide hall of JRR-3. We confirmed that both the absolute flux of 210 $^{12}$ n/ms and the shape of energy spectrum were reproduced after the replacement of the liquid hydrogen tank. JAEA has a plan to increase cold neutron flux ten times as strong as that at present by introducing a new type of hydrogen tank and super mirror neutron guide in the next term.

Language	:	Japanese
Journal	:	Hamon
Volume	:	16
Number	:	3
Pages	:	p.177 - 178
Publication Year/Month	:	2006/07
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Paper URL	:	https://doi.org/10.5611/hamon.16.177
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	JRR-3M(研究炉3)
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Registration No. : AA20060497
JAEA Abstracts No. : 35000192
Paper Submission No. : 1747

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