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Hazawa, Tomoya; Tamura, Itaru; Takazawa, Hiromitsu
JAEA-Technology 2008-079, 76 Pages, 2009/01
The Department of Research Reactor and Tandem Accelerator has planned the project of increasing cold neutron intensities by ten times by upgrading the cold neutron guide tubes with super-mirrors also and the moderator cell of cold neutron source. An exchange of the guide tubes requires taking the beam shutter of about 6 ton out of the narrow guide tunnel. The cold neutron guide tubes in the front end are 3 times longer then thermal ones and set very close to the reactor core. Therefore, the work has to be done under a high radiation dose as well as paying close attention to setting the tubes precisely. This report describes the result of study on replacing the Ni-guide tubes with super-mirror guide tubes as the first step of the 10-times upgrading project for cold neutrons.
Hashizume, Shuji; ; Matsumoto, Junko; Bamba, Tsunetaka
Genshiryoku Bakkuendo Kenkyu, 5(1), p.37 - 44, 1998/08
no abstracts in English