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 |
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Pages (from-to) | 614-617 |
Number of pages | 3 |
Journal | IEEE Transactions on Applied Superconductivity |
Volume | 13 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2003 |
MoE publication type | A1 Journal article-refereed |
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