The X-ray Integral Field Unit (X-IFU) for Athena
作者： Laurent Ravera , Didier Barret , Jan Willem den Herder , Luigi Piro , Rodolphe Clédassou
DOI: 10.1117/12.2055884
关键词:
摘要: Athena is designed to implement the Hot and Energetic Universe science theme selected by European Space Agency for second large mission of its Cosmic Vision program. The payload consists a aperture high angular resolution X-ray optics (2 m2 at 1 keV) twelve meters away, two interchangeable focal plane instruments: Integral Field Unit (X-IFU) Wide Imager. X-IFU cryogenic spectrometer, based on array Transition Edge Sensors (TES), offering 2:5 eV spectral resolution, with ~5" pixels, over field view 50 in diameter. In this paper, we present detector readout electronics principles, some elements current design assembly cooling chain. We describe performance estimates, terms effective area, particle background rejection count rate capability. Finally, emphasize technology developments necessary meet demanding requirements X-IFU, both sensor,
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