Dc- and un-SQUIDs for readout of ac-biased transition-edge sensors

Mikko Kiviranta; Jari S. Penttilä; Leif Grönberg; Heikki Seppä; Ilkka Suni

doi:10.1109/TASC.2003.813962

Dc- and un-SQUIDs for readout of ac-biased transition-edge sensors

Mikko Kiviranta, Jari S. Penttilä, Leif Grönberg, Heikki Seppä, Ilkka Suni

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

We have developed a set of SQUIDs optimized for readout of ac-biased transition edge sensors. Junction shunts are made of Pd and attached to cooling fins to facilitate low-noise operation at sub-kelvin temperatures. SQUID's have a low loop inductance in order to reach a large natural dynamic range even without negative feedback. The SQUIDs are intended to be used for frequency-domain multiplexing of X-ray calorimeter arrays. Both traditional dc-SQUIDs and novel un-SQUIDs are manufactured. The fabrication process and SQUID design criteria are reviewed.

Original language	English
Pages (from-to)	614-617
Number of pages	3
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2003.813962
Publication status	Published - 2003
MoE publication type	A1 Journal article-refereed

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Keywords

SQUID
X-ray detection
X-ray imaging
calorimeters
inductance
palladium
superconducting device noise
frequency-domain multiplexing
junction shunts
Josephson junction
loop inductance
low-noise operation
natural dynamic range
negative feedback
readout
sub-kelvin temperatures

Cite this

Kiviranta, M., Penttilä, J. S., Grönberg, L., Seppä, H., & Suni, I. (2003). Dc- and un-SQUIDs for readout of ac-biased transition-edge sensors. IEEE Transactions on Applied Superconductivity, 13(2), 614-617. https://doi.org/10.1109/TASC.2003.813962

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abstract = "We have developed a set of SQUIDs optimized for readout of ac-biased transition edge sensors. Junction shunts are made of Pd and attached to cooling fins to facilitate low-noise operation at sub-kelvin temperatures. SQUID's have a low loop inductance in order to reach a large natural dynamic range even without negative feedback. The SQUIDs are intended to be used for frequency-domain multiplexing of X-ray calorimeter arrays. Both traditional dc-SQUIDs and novel un-SQUIDs are manufactured. The fabrication process and SQUID design criteria are reviewed.",

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AU - Seppä, Heikki

AU - Suni, Ilkka

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KW - X-ray imaging

KW - calorimeters

KW - inductance

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10.1109/TASC.2003.813962