Computer Science – Performance
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1185..757k&link_type=abstract
THE THIRTEENTH INTERNATIONAL WORKSHOP ON LOW TEMPERATURE DETECTORS-LTD13. AIP Conference Proceedings, Volume 1185, pp. 757-760
Computer Science
Performance
5
Calorimetry, Gamma-Ray Spectrometers, Telescopes, Calorimeters, X-Ray And Gamma-Ray Spectrometers, X- And Gamma-Ray Telescopes And Instrumentation
Scientific paper
The International X-Ray Observatory (IXO) is under formulation by NASA, ESA and JAXA for deployment in 2022. IXO emerged over the last 18 months as the NASA Constellation-X and ESA/JAXA X-Ray Evolving Universe Spectrometer (XEUS) missions were combined. The driving performance requirements for the X-Ray Microcalorimeter Spectrometer (XMS) are a spectral resolution of 2.5 eV over the central 2'×2' in the 0.3-7.0 keV band, and 10 eV to the edge of the 5'×5' field of view (FOV). The XMS is now based on a microcalorimeter array of Transition-Edge Sensor (TES) thermometers with Au/Bi absorbers and a SQUID MUX readout. One of the concepts studied as part of the mission formulation has a core 40×40 array corresponding to a 2'×2' FOV with 3'' pixels surrounded by an outer, annular 52×52 array of 6'' pixels that extends the field of view to 5.4'×5.4' with better than 10 eV resolution. There are several options for implementing the readout and cooling system of the XMS under study in the US, Europe and Japan. The ADR system will have from two to five stages depending on the performance of the cryocooler. Mechanical coolers with sufficient cooling power at 4K are available now, and ~2K coolers are under development. In this paper we give an overview of the XMS instrument, and some of the tradeoffs to be addressed for this observatory instrument.
Bandler Simon R.
de Korte Piet
den Hartog Roland
den Herder Jan Willem
Doriese Bertrand W.
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