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Proceedings Paper

Micro-fabricated magnetic microcalorimeter development for x-ray astronomy
Author(s): Simon R. Bandler; Joseph S. Adams; Joern Beyer; Wen-Ting Hsieh; Hannes Rotzinger; George M. Seidel; Thomas Stevenson
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Paper Abstract

X-ray microcalorimeters using magnetic sensors show great promise for use in astronomical x-ray spectroscopy. We have begun to develop technology for fabricating arrays of magnetic calorimeters for X-ray astronomy. The magnetization change in each pixel of the paramagnetic sensor material due to the heat input of an absorbed x-ray is sensed by a meander shaped coil. With this geometry it is possible to obtain excellent energy sensitivity, low magnetic cross-talk and large format arrays fabricated on wafers that are separate from the SQUID read-out. We report on the results from our prototype arrays, which are coupled to low noise 2-stage SQUIDs developed at the PTB Berlin. The first testing results are presented and the sensitivity compared with calculations.

Paper Details

Date Published: 24 July 2008
PDF: 11 pages
Proc. SPIE 7021, High Energy, Optical, and Infrared Detectors for Astronomy III, 70211K (24 July 2008); doi: 10.1117/12.789894
Show Author Affiliations
Simon R. Bandler, NASA Goddard Space Flight Ctr. (United States)
CRESST and Univ. of Maryland, College Park (United States)
Joseph S. Adams, NASA Goddard Space Flight Ctr. (United States)
CRESST and Univ. of Maryland, Baltimore County (United States)
Joern Beyer, Physikalisch-Technische Bundesanstalt (Germany)
Wen-Ting Hsieh, NASA Goddard Space Flight Ctr. (United States)
Hannes Rotzinger, NASA Goddard Space Flight Ctr. (United States)
Brown Univ. (United States)
George M. Seidel, Brown Univ. (United States)
Thomas Stevenson, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 7021:
High Energy, Optical, and Infrared Detectors for Astronomy III
David A. Dorn; Andrew D. Holland, Editor(s)

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