Micro-fabricated magnetic microcalorimeter development for x-ray astronomy

Simon R. Bandler; Joseph S. Adams; Joern Beyer; Wen-Ting Hsieh; Hannes Rotzinger; George M. Seidel; Thomas Stevenson

doi:10.1117/12.789894

24 July 2008 Micro-fabricated magnetic microcalorimeter development for x-ray astronomy

Simon R. Bandler, Joseph S. Adams, Joern Beyer, Wen-Ting Hsieh, Hannes Rotzinger, George M. Seidel, Thomas Stevenson

Proceedings Volume 7021, High Energy, Optical, and Infrared Detectors for Astronomy III; 70211K (2008) https://doi.org/10.1117/12.789894
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

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.

Citation Download Citation

Simon R. Bandler, Joseph S. Adams, Joern Beyer, Wen-Ting Hsieh, Hannes Rotzinger, George M. Seidel, and Thomas Stevenson "Micro-fabricated magnetic microcalorimeter development for x-ray astronomy", Proc. SPIE 7021, High Energy, Optical, and Infrared Detectors for Astronomy III, 70211K (24 July 2008); https://doi.org/10.1117/12.789894

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