Abstract
We measure the current noise of several cryogenic cables
in a pulse tube based dilution refrigerator at
frequencies between about 1 mHz and 50 kHz. We show that
vibration-induced noise can be efficiently suppressed by
using vacuum-insulated cables between room temperature
and the 2nd pulse tube stage. A noise peak below 4 fA at
the 1.4 Hz operation frequency of the pulse tube and a
white noise density of 0.44 fA / Hz in the millihertz
range are obtained.
Original language | English |
---|---|
Article number | 10511 |
Journal | Review of Scientific Instruments |
Volume | 87 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2016 |
MoE publication type | A1 Journal article-refereed |