Reducing current noise in cryogenic experiments by vacuum-insulated cables

E. Mykkänen; Janne Lehtinen; A. Kemppinen; C. Krause; D. Drung; J. Nissilä; Antti Manninen

doi:10.1063/1.4963904

Reducing current noise in cryogenic experiments by vacuum-insulated cables

E. Mykkänen, Janne Lehtinen, A. Kemppinen, C. Krause, D. Drung, J. Nissilä, Antti Manninen

BA1703 Electrical metrology

Research output: Contribution to journal › Article › Scientific › peer-review

6 Citations (Scopus)

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	https://doi.org/10.1063/1.4963904
Publication status	Published - 2016
MoE publication type	A1 Journal article-refereed

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Mykkänen, E., Lehtinen, J., Kemppinen, A., Krause, C., Drung, D., Nissilä, J., & Manninen, A. (2016). Reducing current noise in cryogenic experiments by vacuum-insulated cables. Review of Scientific Instruments, 87(10), [10511]. https://doi.org/10.1063/1.4963904

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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.",

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AU - Mykkänen, E.

AU - Lehtinen, Janne

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AU - Krause, C.

AU - Drung, D.

AU - Nissilä, J.

AU - Manninen, Antti

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AB - 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.

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