论文标题
天体物理观测中室温设备的高精度温度监测系统
High-precision temperature monitoring system for room-temperature equipment in astrophysical observations
论文作者
论文摘要
我们提出了一个精确的温度计系统，以监视望远镜的望远镜的室温组件，例如宇宙微波背景（CMB）观察。该系统在300 k处的时间尺度上实现了1 mk $ {\ rm \ sqrt {s}} $的精确度。我们通过仅跟踪相对波动并将热敏电阻与低噪声测量设备结合在一起，实现了这一高度精度。我们显示了用于CMB观察的温度监测器所需的精度，并引入了调节系统的性能。这种精确的室温监控系统使我们能够在广泛的射电探测器信号观察中降低低频噪声，并以其设计的高灵敏度操作大型检测器阵列。
We present a precise thermometry system to monitor room-temperature components of a telescope for radio-astronomy such as cosmic microwave background (CMB) observation. The system realizes precision of 1 mK${\rm \sqrt{s}}$ on a timescale of 20 seconds at 300 K. We achieved this high precision by tracking only relative fluctuation and combining thermistors with a low-noise measurement device. We show the required precision of temperature monitors for CMB observation and introduce the performance of our thermometry system. This precise room-temperature monitoring system enables us to reduce the low-frequency noise in a wide range of radio-astronomical detector signals observation and to operate a large detector array perform at its designed high sensitivity.
