• DOI:10.1088/0953-2048/24/4/045003
• Corpus ID: 55502216

Two-stage locally linearized SQUID readout for frequency domain multiplexed calorimeter arrays

@article{Kiviranta2011TwostageLL,
  title={Two-stage locally linearized SQUID readout for frequency domain multiplexed calorimeter arrays},
  author={Mikko Kiviranta and Leif Gr{\"o}nberg and Hannu Sipola},
  journal={Superconductor Science and Technology},
  year={2011},
  volume={24},
  pages={045003}
}

• M. Kiviranta, L. Grönberg, H. Sipola
• Published 1 April 2011
• Physics
• Superconductor Science and Technology

We have constructed a two-stage SQUID amplifier intended for multiplexed cryogenic detector arrays. The upper SQUID is a locally linearized 6 × 80 array showing 0.13 μΦ0 Hz − 1/2 flux noise at 4.2 K. The lower linearized 4 × 3 SQUID array has decoupled input and feedback coils and shows 0.28 μΦ0 Hz − 1/2 flux noise at 4.2 K. Design principles and measured performance are reviewed.