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24 July 2008 Micro-fabricated magnetic microcalorimeter development for x-ray astronomy
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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.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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