Noise studies of uncoupled DC-SQUIDs

Tapani Ryhänen; Heikki Seppä; Robin Cantor; Dietmar Drung; Hans Koch; D. Veldhuis

doi:10.1007/978-3-642-77457-7_58

Noise studies of uncoupled DC-SQUIDs

Tapani Ryhänen, Heikki Seppä, Robin Cantor, Dietmar Drung, Hans Koch, D. Veldhuis

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

Abstract

We have performed noise measurements of uncoupled dc SQUIDs with similar square washer geometries. Mappings consisting of hundreds of flux noise measurements at different points of operation have been carried out using a dc SQUID preamplifier and a computer controlled measurement system. The white and low frequency noise, dynamic resistance, and the flux-to-volt age transfer function have been measured. The dc SQUID noise performance is described using equivalent current noise sources, and the voltage noise is observed to be linearly proportional to dynamic resistance R_dyn.

Original language	English
Title of host publication	Superconducting Devices and Their Applications
Editors	Hans Koch, Heinz Lübbig
Place of Publication	Heidelberg
Publisher	Springer
Pages	321-325
ISBN (Electronic)	978-3-642-77457-7
ISBN (Print)	978-3-642-77459-1
DOIs	https://doi.org/10.1007/978-3-642-77457-7_58
Publication status	Published - 1992
MoE publication type	A4 Article in a conference publication
Event	4th International Conference SQUID ’91 - Berlin, Germany Duration: 18 Jun 1992 → 21 Jun 1992

Publication series

Series	Springer Proceedings in Physics
Volume	64
ISSN	0930-8989

Conference

Conference	4th International Conference SQUID ’91
Country/Territory	Germany
City	Berlin
Period	18/06/92 → 21/06/92

Access to Document

10.1007/978-3-642-77457-7_58

Cite this

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title = "Noise studies of uncoupled DC-SQUIDs",

abstract = "We have performed noise measurements of uncoupled dc SQUIDs with similar square washer geometries. Mappings consisting of hundreds of flux noise measurements at different points of operation have been carried out using a dc SQUID preamplifier and a computer controlled measurement system. The white and low frequency noise, dynamic resistance, and the flux-to-volt age transfer function have been measured. The dc SQUID noise performance is described using equivalent current noise sources, and the voltage noise is observed to be linearly proportional to dynamic resistance Rdyn.",

author = "Tapani Ryh{\"a}nen and Heikki Sepp{\"a} and Robin Cantor and Dietmar Drung and Hans Koch and D. Veldhuis",

note = "Project code: S{\"A}H 2207; 4th International Conference SQUID {\textquoteright}91 ; Conference date: 18-06-1992 Through 21-06-1992",

year = "1992",

doi = "10.1007/978-3-642-77457-7_58",

language = "English",

isbn = "978-3-642-77459-1",

series = "Springer Proceedings in Physics",

publisher = "Springer",

pages = "321--325",

editor = "Hans Koch and Heinz L{\"u}bbig",

booktitle = "Superconducting Devices and Their Applications",

address = "Germany",

}

Ryhänen, T, Seppä, H, Cantor, R, Drung, D, Koch, H & Veldhuis, D 1992, Noise studies of uncoupled DC-SQUIDs. in H Koch & H Lübbig (eds), Superconducting Devices and Their Applications. Springer, Heidelberg, Springer Proceedings in Physics, vol. 64, pp. 321-325, 4th International Conference SQUID ’91, Berlin, Berlin, Germany, 18/06/92. https://doi.org/10.1007/978-3-642-77457-7_58

Noise studies of uncoupled DC-SQUIDs. / Ryhänen, Tapani; Seppä, Heikki; Cantor, Robin et al.
Superconducting Devices and Their Applications. ed. / Hans Koch; Heinz Lübbig. Heidelberg: Springer, 1992. p. 321-325 (Springer Proceedings in Physics, Vol. 64).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Noise studies of uncoupled DC-SQUIDs

AU - Ryhänen, Tapani

AU - Seppä, Heikki

AU - Cantor, Robin

AU - Drung, Dietmar

AU - Koch, Hans

AU - Veldhuis, D.

N1 - Project code: SÄH 2207

PY - 1992

Y1 - 1992

N2 - We have performed noise measurements of uncoupled dc SQUIDs with similar square washer geometries. Mappings consisting of hundreds of flux noise measurements at different points of operation have been carried out using a dc SQUID preamplifier and a computer controlled measurement system. The white and low frequency noise, dynamic resistance, and the flux-to-volt age transfer function have been measured. The dc SQUID noise performance is described using equivalent current noise sources, and the voltage noise is observed to be linearly proportional to dynamic resistance Rdyn.

AB - We have performed noise measurements of uncoupled dc SQUIDs with similar square washer geometries. Mappings consisting of hundreds of flux noise measurements at different points of operation have been carried out using a dc SQUID preamplifier and a computer controlled measurement system. The white and low frequency noise, dynamic resistance, and the flux-to-volt age transfer function have been measured. The dc SQUID noise performance is described using equivalent current noise sources, and the voltage noise is observed to be linearly proportional to dynamic resistance Rdyn.

U2 - 10.1007/978-3-642-77457-7_58

DO - 10.1007/978-3-642-77457-7_58

M3 - Conference article in proceedings

SN - 978-3-642-77459-1

T3 - Springer Proceedings in Physics

SP - 321

EP - 325

BT - Superconducting Devices and Their Applications

A2 - Koch, Hans

A2 - Lübbig, Heinz

PB - Springer

CY - Heidelberg

T2 - 4th International Conference SQUID ’91

Y2 - 18 June 1992 through 21 June 1992

ER -

Noise studies of uncoupled DC-SQUIDs

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