The microcalorimeter spectrometer on the ASTRO-E X-ray observatory

Details The microcalorimeter spectrometer on the ASTRO-E X-ray observatory The microcalorimeter spectrometer on the ASTRO-E X-ray observatory

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000nimpa.444..170k&link_type=abstract

Nuclear Instruments and Methods in Physics Research Section A, Volume 444, Issue 1-2, p. 170-174.

Physics

8

Scientific paper

The Astro-E Observatory will employ a high-resolution X-ray spectrometer based on a 32 pixel array of microcalorimeters with an energy resolution of about 12eV at 6keV (the Fe-K region). This will provide spectral resolving power 10 times higher than any other non-dispersive X-ray spectrometer. The instrument incorporates a three-stage cooling system capable of maintaining the temperature of the detector stage at 60mK for about two years in orbit with a 97% duty cycle. The array sits at the focus of a grazing incidence conical mirror. The quantum efficiency of the microcalorimeters and the reflectivity of the X-ray mirror system combine to give high throughput over the 0.3-12keV energy band. This new capability will enable the study of a wide range of high-energy astrophysical sources with unprecedented spectral sensitivity.

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