Design and performance of multiloop and washer SQUIDs intended for sub-kelvin operation

Mikko Kiviranta (Corresponding Author), Jari S. Penttilä, Leif Grönberg, Juha Hassel, Antti Virtanen, Heikki Seppä

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)

Abstract

We have developed a set of dc SQUIDs intended for frequency-domain multiplexed readout of transition edge sensor (TES) arrays. The first design is based on the Ketchen-style washer, and has exhibited a 1.2 × 10−7 Φ0 Hz1/2 flux noise both at 4.2 and 0.43 K. The second design is based on the multiloop structure and utilizes the spoke-terminating resistors which double as junction shunts in order to minimize the excess noise due to the resonance damping. The multiloop device has exhibited a 3.5 × 10−7 Φ0 Hz1/2 flux noise level at 4.2 K. The mutual inductances are chosen such that a typical ac-biased TES-based x-ray calorimeter would need only a moderate amount of negative feedback in order to handle the dynamic range of the signal.
Original languageEnglish
Pages (from-to)285 - 289
Number of pages5
JournalSuperconductor Science and Technology
Volume17
Issue number5
DOIs
Publication statusPublished - 2004
MoE publication typeA1 Journal article-refereed

Fingerprint

washers
Washers
SQUIDs
Fluxes
Sensor arrays
Calorimeters
Inductance
Resistors
spokes
negative feedback
Damping
sensors
shunts
Feedback
stopping
inductance
resistors
X rays
dynamic range
calorimeters

Keywords

  • SQUID
  • washer
  • transition edge sensor
  • bipolar transistors
  • superconducting transistors

Cite this

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title = "Design and performance of multiloop and washer SQUIDs intended for sub-kelvin operation",
abstract = "We have developed a set of dc SQUIDs intended for frequency-domain multiplexed readout of transition edge sensor (TES) arrays. The first design is based on the Ketchen-style washer, and has exhibited a 1.2 × 10−7 Φ0 Hz1/2 flux noise both at 4.2 and 0.43 K. The second design is based on the multiloop structure and utilizes the spoke-terminating resistors which double as junction shunts in order to minimize the excess noise due to the resonance damping. The multiloop device has exhibited a 3.5 × 10−7 Φ0 Hz1/2 flux noise level at 4.2 K. The mutual inductances are chosen such that a typical ac-biased TES-based x-ray calorimeter would need only a moderate amount of negative feedback in order to handle the dynamic range of the signal.",
keywords = "SQUID, washer, transition edge sensor, bipolar transistors, superconducting transistors",
author = "Mikko Kiviranta and Penttil{\"a}, {Jari S.} and Leif Gr{\"o}nberg and Juha Hassel and Antti Virtanen and Heikki Sepp{\"a}",
year = "2004",
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language = "English",
volume = "17",
pages = "285 -- 289",
journal = "Superconductor Science and Technology",
issn = "0953-2048",
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Design and performance of multiloop and washer SQUIDs intended for sub-kelvin operation. / Kiviranta, Mikko (Corresponding Author); Penttilä, Jari S.; Grönberg, Leif; Hassel, Juha; Virtanen, Antti; Seppä, Heikki.

In: Superconductor Science and Technology, Vol. 17, No. 5, 2004, p. 285 - 289.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Design and performance of multiloop and washer SQUIDs intended for sub-kelvin operation

AU - Kiviranta, Mikko

AU - Penttilä, Jari S.

AU - Grönberg, Leif

AU - Hassel, Juha

AU - Virtanen, Antti

AU - Seppä, Heikki

PY - 2004

Y1 - 2004

N2 - We have developed a set of dc SQUIDs intended for frequency-domain multiplexed readout of transition edge sensor (TES) arrays. The first design is based on the Ketchen-style washer, and has exhibited a 1.2 × 10−7 Φ0 Hz1/2 flux noise both at 4.2 and 0.43 K. The second design is based on the multiloop structure and utilizes the spoke-terminating resistors which double as junction shunts in order to minimize the excess noise due to the resonance damping. The multiloop device has exhibited a 3.5 × 10−7 Φ0 Hz1/2 flux noise level at 4.2 K. The mutual inductances are chosen such that a typical ac-biased TES-based x-ray calorimeter would need only a moderate amount of negative feedback in order to handle the dynamic range of the signal.

AB - We have developed a set of dc SQUIDs intended for frequency-domain multiplexed readout of transition edge sensor (TES) arrays. The first design is based on the Ketchen-style washer, and has exhibited a 1.2 × 10−7 Φ0 Hz1/2 flux noise both at 4.2 and 0.43 K. The second design is based on the multiloop structure and utilizes the spoke-terminating resistors which double as junction shunts in order to minimize the excess noise due to the resonance damping. The multiloop device has exhibited a 3.5 × 10−7 Φ0 Hz1/2 flux noise level at 4.2 K. The mutual inductances are chosen such that a typical ac-biased TES-based x-ray calorimeter would need only a moderate amount of negative feedback in order to handle the dynamic range of the signal.

KW - SQUID

KW - washer

KW - transition edge sensor

KW - bipolar transistors

KW - superconducting transistors

U2 - 10.1088/0953-2048/17/5/038

DO - 10.1088/0953-2048/17/5/038

M3 - Article

VL - 17

SP - 285

EP - 289

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

SN - 0953-2048

IS - 5

ER -