ISSTT Proceedings

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A Compact, Modular Package for Superconducting Bolometer Arrays

Authors:
Dominic J. Benford, Christine A. Allen, Johannes G. Staguhn
Abstract:
As bolometer arrays grow to ever-larger formats, packaging becomes a more critical engineering issue. We have designed a detector package to house a superconducting bolometer array, SQUID multiplexers, bias and filtering circuitry, and electrical connectors. The package includes an optical filter, magnetic shielding, and has well-defined thermal and mechanical interfaces. An early version of this package has been used successfully in the GISMO 2mm camera, a 128- pixel camera operating at a base temperature of 270mK. A more advanced package permits operation at lower temperatures by providing direct heat sinking to the SQUIDs and bias resistors, which generate the bulk of the dissipation in the package. Standard electrical connectors provide reliable contact while enabling quick installation and removal of the package. The design compensates for differing thermal expansions, allows heat sinking of the bolometer array, and features magnetic shielding in critical areas. It will be scaled to 1280-pixel arrays in the near future.
Categories:
Detectors, Poster Session
Year:
2008
Session:
P5
Full-text:
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Page Number(s):
456-464