Development of high-performance devices using neutron coherent optics for intense pulsed neutrons

中子干涉仪在Aharonov-Chaser效应的精密测量等基础物理实验中具有优势。使用强流脉冲中子进行高精度测量是很重要的。我们开发了适用于脉冲中子的光学器件。用飞行时间法在J-PARC MLF束线BL05处观测到了清晰的干涉条纹。中子自旋回波谱仪是能量分辨率最高的准弹性散射技术之一。我们研制了用于脉冲中子的高频共振自旋翻转装置。在J-PARC MLF中，根据束线BL05的飞行时间观测到强度调制的自旋回波信号，称为Mieze信号。我们计划在J-PARC建造实际使用的光谱仪。我们还在为各种光谱仪开发用于自旋回波选项的紧凑型设备。

Neutron interferometer has the advantage for fundamental physics experiments, for example, precision measurement of Aharonov-Chaser effect. It is important that high precision measurements using intense pulsed neutrons. We developed optical devices applicable to pulsed neutrons. Clear interference fringes were observed using time-of-flight method at beam line BL05 in J-PARC MLF.Neutron spin echo (NSE) spectrometer is one of the techniques for quasi-elastic scattering with the highest energy resolution. We developed high frequency resonance spin flippers for pulsed neutrons. Intensity modulated spin echo signals, which are called as MIEZE signals, were observed according to the time-of-flight at beam line BL05 in J-PARC MLF. We plan to construct the spectrometers for practical use at J-PARC. We are also developing the compact devices for spin echo option for various spectrometers.