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The Cryogenic Multi-Channel Readout System for Submillimeter/Terahertz Cameras

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Abstract

Our purpose of this study is to realize the submillimeter/terahertz camera with large number of pixels (>10 k). To realize such a camera, we have investigated the cryogenic multi-channel readout system with cryogenic ICs (Integrated Circuits) made up with n-channel GaAs-JFETs.

Based on previous investigations, we designed and manufactured the multi-chip module with the cryogenic ICs. This multi-chip module is designed to multiplex 32-channel parallel input current signals into 2 serial voltage signals. Estimated maximum reset frequency of current integration amplifiers is 3 kHz and estimated total power dissipation is about 400 μW. The size of this module is 40 mm×30 mm×2 mm. We have demonstrated operation of these modules and preparing integration of these modules with the STJ (Superconductor Tunnel Junction) photon direct detectors.

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Acknowledgements

We thank SONY CO Ltd. for supporting our development of GaAs JFET electronics. This work was partly supported by the Grant-in-Aid for the Scientific Research from the Japan Society for the Promotion of Science (No. 18206042).

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Authors and Affiliations

  1. National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo, Japan

    Y. Hibi & H. Matsuo

  2. Institute of Space and Astronautical Science, 3-1-1, Yoshinodai, Sagamihara, Kanagawa, Japan

    H. Nagata & H. Ikeda

  3. National Institute of Information and Communications Technology, 4-2-1, Nukui-Kitamachi, Koganei, Tokyo, Japan

    M. Fujiwara

Authors
  1. Y. Hibi
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  2. H. Matsuo
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  3. H. Nagata
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  4. H. Ikeda
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  5. M. Fujiwara
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Correspondence to Y. Hibi.

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Hibi, Y., Matsuo, H., Nagata, H. et al. The Cryogenic Multi-Channel Readout System for Submillimeter/Terahertz Cameras. J Low Temp Phys 167, 684–688 (2012). https://doi.org/10.1007/s10909-012-0595-6

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  • DOI: https://doi.org/10.1007/s10909-012-0595-6

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