论文标题
激光干涉仪加速度计，用于振动敏感的低温实验
A laser interferometer accelerometer for vibration sensitive cryogenic experiments
论文作者
论文摘要
监测运动来自诸如低温冷却系统（例如冷冻机），对于像Kagra这样的振动敏感的低温实验很重要。由于没有商用低温加速度计，我们开发了一种紧凑的自校准加速度计，并具有米歇尔森干涉仪读数以供低温使用。校准因子的变化和干涉仪输出的下降来自温度下降的主要关注点。 $ 3.38 \ times10^{ - 11} $ m/$ \ sqrt {\ mathrm {hz}} $在300 k处实现$ 3.38 \ times10^{ - 11} $ m/$ \ sqrt {\ mathrm {hz}} $。在0.1-100 Hz带中显示稳定的操作降至12 K，仅1％可见度下降。我们的加速度计可用于多种应用中的低振动低温环境。
Monitoring motion originating from ultra low-temperature cooling systems like cryocoolers is important for vibration sensitive cryogenic experiments like KAGRA. Since no commercial cryogenic accelerometers are available, we developed a compact self-calibrating accelerometer with a Michelson interferometer readout for cryogenic use. Change in calibration factor and drop in interferometer output originating from temperature drop were the main concerns which were tackled. Sensitivity of $3.38\times10^{-11}$ m/$\sqrt{\mathrm{Hz}}$ at 1 Hz was achieved at 300 K. The accelerometer was tested inside the KAGRA cryostat; showed stable operation down to 12 K in 0.1-100 Hz band with only 1% visibility drop. Our accelerometer can be employed in low vibration cryogenic environment for a multitude of applications.
