Research in Undergraduate Institutions: Experimental Studies of Excess Inverse Frequency Noise in SQUID Systems (Materials Research)

研究了超导量子干涉器件(SQUID)的反频(1/f)噪声。这些实验研究将确定与鱿鱼测量环境相关的因素的重要性。研究发现，与鱿鱼本身的噪声相比，环境中产生的噪音更大。我们将对环境噪声的许多可疑来源及其相对重要性有一个新的认识。要研究的环境噪声源包括热磁噪声、环境磁场的噪声效应、传感器温度变化效应和读出电路不稳定效应。由于SQUID越来越多地被用于敏感的测量应用，因此技术应用是可以预期的。

The inverse frequency (1/f) noise of a superconducting quantum interference device (SQUID) is investigated. These experimental studies will determine the importance of factors relating to the measurement environment with the SQUID. The environment is found to introduce greater noise than the intrinsic noise of the SQUID. A new understanding of many of the suspected sources of the environmental noise and their relative importance will be obtained. The environmental sources of noise to be studied include thermomagnetic noise, noise effects of ambient magnetic fields, sensor temperature variation effects, and readout circuit instability effects. Technological applications are anticipated since the SQUIDs are used increasingly in sensitive measurement applications.