受賞記事
未来を振り返る
2018 年 28 巻 2 号 p. 69-72
詳細
2018 年 28 巻 2 号 p. 69-72
The neutron science facility (KENS) at National Laboratory for High Energy Physics was the world first user-oriented facility, started operation in 1980. It was a unique accelerator driven spallation source facility at the time having a solid methane cold source. The Small-angle Neutron Scattering Instrument (SAN) was the first of such kind installed at an accelerator driven neutron source. An array of helium-3 gas tube detectors was used for the main detector bank and the electronics system was developed for it.
In 1996, a new cold neutron experimental hall was built. Two beamlines were shared by two and three instruments respectively. The small and wide-angle diffractometer Wink and the modified small-angle neutron scattering instrument SWAN were built. The new high resolution powder diffractometer (SIRIUS) was built that had a very large detector banks having over 1,000 PSDs and the performance was almost comparable to that of HRPD at ISIS then.
Great efforts had been poured into getting budget to build a world leading spallation neutron source similar or larger than ISIS. It started as the Gemini project, changed to JHP and to JHF, eventually became J-PARC and successfully built and operating now.
