TES detector noise limited readout using SQUID multiplexers | Zendy

Johannes Staguhn | Zendy; Christine A. Allen | Zendy; Dominic J. Benford | Zendy; J. A. Chervenak | Zendy; M. M. Freund | Zendy; Saeed Khan | Zendy; A. Kutyrev | Zendy; S. H. Moseley | Zendy; R. A. Shafer | Zendy; S. Deiker | Zendy; Erich N. Grossman | Zendy; G. C. Hilton | Zendy; K. D. Irwin | Zendy; John M. Martinis | Zendy; Sae Woo Nam | Zendy; D. A. Rudman | Zendy; David A. Wollman | Zendy

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TES detector noise limited readout using SQUID multiplexers

Author(s) -

Johannes Staguhn,

Christine A. Allen,

Dominic J. Benford,

J. A. Chervenak,

M. M. Freund,

Saeed Khan,

A. Kutyrev,

S. H. Moseley,

R. A. Shafer,

S. Deiker,

Erich N. Grossman,

G. C. Hilton,

K. D. Irwin,

John M. Martinis,

Sae Woo Nam,

D. A. Rudman,

David A. Wollman

Publication year - 2002

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.1457655

Subject(s) - multiplexer , multiplexing , detector , noise (video) , physics , transition edge sensor , amplifier , electrical engineering , electronic engineering , bandwidth (computing) , squid , computer science , optoelectronics , optics , bolometer , engineering , telecommunications , cmos , ecology , artificial intelligence , image (mathematics) , biology

The availability of superconducting Transition Edge Sensors (TES) with large numbers of individual detector pixels requires multiplexers for efficient readout. The use of multiplexers reduces the number of wires needed between the cryogenic electronics and the room temperature electronics and cuts the number of required cryogenic amplifiers. We are using an 8 channel SQUID multiplexer to read out one-dimensional TES arrays which are used for submillimeter astronomical observations. We present results from test measurements which show that the low noise level of the SQUID multiplexers allows accurate measurements of the TES Johnson noise, and that in operation, the readout noise is dominated by the detector noise. Multiplexers for large number of channels require a large bandwidth for the multiplexed readout signal. We discuss the resulting implications for the noise performance of these multiplexers which will be used for the readout of two dimensional TES arrays in next generation instruments.

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