2010 年 20 巻 2 号 p. 146-150
To utilize high neutrons up to eV region with a low background noise, a T0 chopper rotating at 100 Hz with a phase control accuracy of ±5 μs was designed and assembled. We investigated properties of this T0 chopper. Based on the development, actual machines were produced for some neutron beamlines at J-PARC.