Options for an imaging array of micro-calorimeters for X-ray astronomy

Details Options for an imaging array of micro-calorimeters for X-ray astronomy Options for an imaging array of micro-calorimeters for X-ray astronomy

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000nimpa.444..260b&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 444, Issue 1-2, p. 260-264.

Physics

2

Scientific paper

A feasibility study of an imaging 32×32 pixel micro-calorimeter array, intended for the XEUS mission is presented. Three different concepts, theoretically leading to an imaging spectrometer that combines an energy resolution of 5ev for 8keV X-rays and a count rate of at least 100 counts/s/pixel, are presented and discussed. Current progress in the field of single-pixel micro-calorimeters employing voltage-biased transition edge sensors forms the basis for the selection of this type of device. The design concepts originate from different philosophies for the thermal design and geometrical lay-out and will use state of the art micro-machining and lithography. SQUID read-out will be the challenge and grouping of pixels might be considered, both from an electrical and a cooling point of view.

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