Noise Measurements on DC-SQUIDs with Varied Design
We have fabricated and tested two types of SQUIDs. The first, a low inductance stripline device, was characterized using a commercial dc SQUID as a following amplifier. The second type was well coupled to a 0.16µH input coil and was characterized and flux-locked using an ultralow noise room temperature preamplifier. We present device characterization and noise data for both types of devices.
KeywordsPower Spectral Density Modulation Coil Input Coil Squid Loop White Noise Level
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