Single SQUID frequency-domain multiplexer for large bolometer arrays

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We describe the development of a frequency-domain superconducting quantum interference device (SQUID) multiplexer which monitors a row of low-temperature sensors simultaneously with a single SQUID. Each sensor is ac biased with a unique frequency and all the sensor currents are added in a superconducting summing loop. A single SQUID measures the current in the summing loop, and the individual signals are lock-in detected after the room temperature SQUID electronics. The current in the summing loop is nulled by feedback to eliminate direct crosstalk. We have built an eight-channel prototype and demonstrated channel separation and signal recovery.

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Yoon, Jongsoo; Clarke, John; Gildemeister, J.M.; Lee, Adrian T.; Myers, M.J.; Skidmore, J.T. et al. August 20, 2001.

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Description

We describe the development of a frequency-domain superconducting quantum interference device (SQUID) multiplexer which monitors a row of low-temperature sensors simultaneously with a single SQUID. Each sensor is ac biased with a unique frequency and all the sensor currents are added in a superconducting summing loop. A single SQUID measures the current in the summing loop, and the individual signals are lock-in detected after the room temperature SQUID electronics. The current in the summing loop is nulled by feedback to eliminate direct crosstalk. We have built an eight-channel prototype and demonstrated channel separation and signal recovery.

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OSTI as DE00787158

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  • ISEC 2001 Conference, Osaka (JP), 06/19/2001--06/23/2001

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  • Report No.: LBNL--48678
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 787158
  • Archival Resource Key: ark:/67531/metadc719616

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  • August 20, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • April 5, 2016, 5:08 p.m.

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Yoon, Jongsoo; Clarke, John; Gildemeister, J.M.; Lee, Adrian T.; Myers, M.J.; Skidmore, J.T. et al. Single SQUID frequency-domain multiplexer for large bolometer arrays, article, August 20, 2001; California. (digital.library.unt.edu/ark:/67531/metadc719616/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.